#64004 - Replace clone() with copy constructor - mainly HSSF classes

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1871911 13f79535-47bb-0310-9956-ffa450edef68

src/integrationtest/org/apache/poi/TestAllFiles.java

@@ -65,26 +65,26 @@ import org.junit.runners.Parameterized.Parameters;
 
 /**
  *  This is an integration test which performs various actions on all stored test-files and tries
- *  to reveal problems which are introduced, but not covered (yet) by unit tests. 
- * 
- *  This test looks for any file under the test-data directory and tries to do some useful 
+ *  to reveal problems which are introduced, but not covered (yet) by unit tests.
+ *
+ *  This test looks for any file under the test-data directory and tries to do some useful
  *  processing with it based on it's type.
- * 
+ *
  *  The test is implemented as a junit {@link Parameterized} test, which leads
- *  to one test-method call for each file (currently around 950 files are handled). 
- * 
- *  There is a a mapping of extension to implementations of the interface 
- *  {@link FileHandler} which defines how the file is loaded and which actions are 
- *  tried with the file. 
- *  
+ *  to one test-method call for each file (currently around 950 files are handled).
+ *
+ *  There is a a mapping of extension to implementations of the interface
+ *  {@link FileHandler} which defines how the file is loaded and which actions are
+ *  tried with the file.
+ *
  *  The test can be expanded by adding more actions to the FileHandlers, this automatically
  *  applies the action to any such file in our test-data repository.
- *  
+ *
  *  There is also a list of files that should actually fail.
- *    
- *  Note: It is also a test-failure if a file that is expected to fail now actually works, 
- *  i.e. if a bug was fixed in POI itself, the file should be removed from the expected-failures 
- *  here as well! This is to ensure that files that should not work really do not work, e.g.  
+ *
+ *  Note: It is also a test-failure if a file that is expected to fail now actually works,
+ *  i.e. if a bug was fixed in POI itself, the file should be removed from the expected-failures
+ *  here as well! This is to ensure that files that should not work really do not work, e.g.
  *  that we do not remove expected sanity checks.
  */
 @RunWith(Parameterized.class)
@@ -96,7 +96,7 @@ public class TestAllFiles {
 
     private static final Map<String,String> FILE_PASSWORD;
 
-    
+
     // map file extensions to the actual mappers
     public static final Map<String, FileHandler> HANDLERS = new HashMap<>();
 
@@ -136,7 +136,7 @@ public class TestAllFiles {
 
         // Visio - binary
         HANDLERS.put(".vsd", IGNORE_SCRATCHPAD ? new HPSFFileHandler() : new HDGFFileHandler());
-        
+
         // Visio - ooxml
         HANDLERS.put(".vsdm", new XDGFFileHandler());
         HANDLERS.put(".vsdx", new XDGFFileHandler());
@@ -238,7 +238,7 @@ public class TestAllFiles {
         passmap.put("poifs/protected_agile.docx", Decryptor.DEFAULT_PASSWORD);
         passmap.put("poifs/60320-protected.xlsx", "Test001!!");
         passmap.put("poifs/protected_sha512.xlsx", "this is a test");
-        
+
         FILE_PASSWORD = Collections.unmodifiableMap(passmap);
     }
 
@@ -326,7 +326,7 @@ public class TestAllFiles {
         "spreadsheet/testEXCEL_95.xls",
         "spreadsheet/59074.xls",
         "spreadsheet/60284.xls",
-        
+
         // OOXML Strict is not yet supported, see bug #57699
         "spreadsheet/SampleSS.strict.xlsx",
         "spreadsheet/SimpleStrict.xlsx",
@@ -342,7 +342,7 @@ public class TestAllFiles {
 
         // sheet cloning errors
         "spreadsheet/56450.xls",
-        "spreadsheet/OddStyleRecord.xls",
+        // "spreadsheet/OddStyleRecord.xls",
 
         // msg files with non-standard encodings
         "hsmf/ASCII_CP1251_LCID1049.msg",
@@ -377,7 +377,7 @@ public class TestAllFiles {
             }
             FileHandler handler = HANDLERS.get(getExtension(file));
             files.add(new Object[] { file, handler });
-            
+
             // for some file-types also run OPCFileHandler
             if(handler instanceof XSSFFileHandler ||
                 handler instanceof XWPFFileHandler ||
@@ -385,7 +385,7 @@ public class TestAllFiles {
                 handler instanceof XDGFFileHandler) {
                 files.add(new Object[] { file, new OPCFileHandler() });
             }
-            
+
             if (handler instanceof HSSFFileHandler ||
                 handler instanceof HSLFFileHandler ||
                 handler instanceof HWPFFileHandler ||
@@ -410,7 +410,7 @@ public class TestAllFiles {
         String pass = TestAllFiles.FILE_PASSWORD.get(file);
         Biff8EncryptionKey.setCurrentUserPassword(pass);
     }
-    
+
     @Test
     public void testAllFiles() throws Exception {
         if(handler == null) {
@@ -426,7 +426,7 @@ public class TestAllFiles {
                     file.endsWith(".xlsb") || file.endsWith(".pptx")) &&
                 handler instanceof OPCFileHandler;
         boolean ignoreHPSF = (handler instanceof HPSFFileHandler);
-        
+
         try {
             try (InputStream stream = new BufferedInputStream(new FileInputStream(inputFile), 64 * 1024)) {
                 handler.handleFile(stream, file);
@@ -436,7 +436,7 @@ public class TestAllFiles {
 
             handler.handleExtracting(inputFile);
 
-            assertFalse("Expected to fail for file " + file + " and handler " + handler + ", but did not fail!", 
+            assertFalse("Expected to fail for file " + file + " and handler " + handler + ", but did not fail!",
                 EXPECTED_FAILURES.contains(file) && !ignoredOPC && !ignoreHPSF);
         } catch (OldFileFormatException e) {
             // for old word files we should still support extracting text

src/integrationtest/org/apache/poi/hssf/usermodel/RecordsStresser.java

@@ -28,14 +28,14 @@ import org.apache.poi.hssf.record.Record;
 import org.junit.Test;
 
 /**
- * Needs to be implemented in this package to have access to 
+ * Needs to be implemented in this package to have access to
  * HSSFWorkbook.getWorkbook()
  */
 public class RecordsStresser {
     public static void handleWorkbook(HSSFWorkbook wb) {
         List<Record> records = wb.getWorkbook().getRecords();
         for(Record record : records) {
-            // some Records do not implement clone ?! 
+            // some Records do not implement clone ?!
             // equals instead of instanceof is on purpose here to only skip exactly this class and not any derived ones
 //            if(record.getClass().equals(InterfaceHdrRecord.class) ||
 //                    record.getClass().equals(MMSRecord.class) ||
@@ -46,18 +46,16 @@ public class RecordsStresser {
 //                continue;
 //            }
             try {
-                Record newRecord = (Record) record.clone();
-                
-                assertEquals("Expecting the same class back from clone(), but had Record of type " + record.getClass() + " and got back a " + newRecord.getClass() + " from clone()", 
-                        record.getClass(), newRecord.getClass()); 
-                
+                Record newRecord = record.copy();
+
+                assertEquals("Expecting the same class back from clone(), but had Record of type " + record.getClass() + " and got back a " + newRecord.getClass() + " from clone()",
+                        record.getClass(), newRecord.getClass());
+
                 byte[] origBytes = record.serialize();
                 byte[] newBytes = newRecord.serialize();
-                
-                assertArrayEquals("Record of type " + record.getClass() + " should return the same byte array via the clone() method, but did return a different array", 
+
+                assertArrayEquals("Record of type " + record.getClass() + " should return the same byte array via the clone() method, but did return a different array",
                         origBytes, newBytes);
-            } catch (CloneNotSupportedException e) {
-                throw new RuntimeException(e);
             } catch (RuntimeException e) {
                 // some Records do not implement clone, ignore those for now
                 assertTrue(e.getMessage().contains("needs to define a clone method"));

src/java/org/apache/poi/common/Duplicatable.java

@@ -0,0 +1,39 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You under the Apache License, Version 2.0
+   (the "License"); you may not use this file except in compliance with
+   the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+==================================================================== */
+
+package org.apache.poi.common;
+
+/**
+ * This is an alternative to the {@link Cloneable} interface without its side-effects.
+ * A class implementing Duplicatable provides a deep-copy of itself - usually this is done via a copy-constructor,
+ * which is invoked with a self-reference by the copy method.
+ * References to child objects are duplicated - references to parents are kept as-is and
+ * might need to be replaced by the parent copy operation.
+ *
+ * @param <T> the implementing class itself
+ *
+ * @see <a href="https://www.artima.com/intv/bloch.html#part13">Copy Constructor versus Cloning</a>
+ */
+public interface Duplicatable {
+    // Providing a generics interface Duplicatable<T extends Duplicatable<T>> pushes too many
+    // changes to the implementing classes and the benefit of providing a subtype-specific copy method
+    // is not sufficient
+    /**
+     * @return a deep copy of the implementing class / instance
+     */
+    Duplicatable copy();
+}

src/java/org/apache/poi/ddf/AbstractEscherOptRecord.java

@@ -171,7 +171,4 @@ public abstract class AbstractEscherOptRecord extends EscherRecord {
             "properties", this::getEscherProperties
         );
     }
-
-    @Override
-    public abstract AbstractEscherOptRecord copy();
 }

src/java/org/apache/poi/ddf/EscherContainerRecord.java

@@ -142,13 +142,9 @@ public final class EscherContainerRecord extends EscherRecord implements Iterabl
      * @return true, if any child has the given recordId
      */
     public boolean hasChildOfType(short recordId) {
-        for (EscherRecord r : this) {
-            if(r.getRecordId() == recordId) {
-                return true;
-            }
-        }
-        return false;
+        return _childRecords.stream().anyMatch(r -> r.getRecordId() == recordId);
     }
+
     @Override
     public EscherRecord getChild( int index ) {
         return _childRecords.get(index);
@@ -170,6 +166,7 @@ public final class EscherContainerRecord extends EscherRecord implements Iterabl
         return Collections.unmodifiableList(_childRecords).iterator();
     }
 
+
     /**
      * replaces the internal child list with the contents of the supplied <tt>childRecords</tt>
      */

src/java/org/apache/poi/ddf/EscherRecord.java

@@ -24,6 +24,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.function.Supplier;
 
+import org.apache.poi.common.Duplicatable;
 import org.apache.poi.common.usermodel.GenericRecord;
 import org.apache.poi.util.BitField;
 import org.apache.poi.util.BitFieldFactory;
@@ -32,12 +33,13 @@ import org.apache.poi.util.GenericRecordUtil;
 import org.apache.poi.util.GenericRecordXmlWriter;
 import org.apache.poi.util.Internal;
 import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.Removal;
 
 /**
  * The base abstract record from which all escher records are defined.  Subclasses will need
  * to define methods for serialization/deserialization and for determining the record size.
  */
-public abstract class EscherRecord implements Cloneable, GenericRecord {
+public abstract class EscherRecord implements Duplicatable, GenericRecord {
     private static final BitField fInstance = BitFieldFactory.getInstance(0xfff0);
     private static final BitField fVersion = BitFieldFactory.getInstance(0x000f);
 
@@ -238,9 +240,12 @@ public abstract class EscherRecord implements Cloneable, GenericRecord {
      * Escher records may need to be clonable in the future.
      *
      * @return the cloned object
+     * @deprecated use {@link #copy()}
      */
     @Override
     @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public final EscherRecord clone() {
         return copy();
     }
@@ -350,5 +355,6 @@ public abstract class EscherRecord implements Cloneable, GenericRecord {
         );
     }
 
+    @Override
     public abstract EscherRecord copy();
 }

src/java/org/apache/poi/ddf/EscherTextboxRecord.java

@@ -31,7 +31,7 @@ import org.apache.poi.util.RecordFormatException;
  *  Escher format. We don't attempt to understand the contents, since
  *  they will be in the parent's format, not Escher format.
  */
-public final class EscherTextboxRecord extends EscherRecord implements Cloneable {
+public final class EscherTextboxRecord extends EscherRecord {
 
     //arbitrarily selected; may need to increase
     private static final int MAX_RECORD_LENGTH = 100_000;

src/java/org/apache/poi/ddf/UnknownEscherRecord.java

@@ -31,7 +31,7 @@ import org.apache.poi.util.LittleEndian;
  * This record is used whenever a escher record is encountered that
  * we do not explicitly support.
  */
-public final class UnknownEscherRecord extends EscherRecord implements Cloneable {
+public final class UnknownEscherRecord extends EscherRecord {
 
     //arbitrarily selected; may need to increase
     private static final int MAX_RECORD_LENGTH = 100_000_000;

src/java/org/apache/poi/hssf/eventusermodel/dummyrecord/DummyRecordBase.java

@@ -23,11 +23,9 @@ import org.apache.poi.util.RecordFormatException;
 /**
  */
 abstract class DummyRecordBase extends Record {
-	
-	protected DummyRecordBase() {
-		//
-	}
-	
+
+	protected DummyRecordBase() {}
+
 	public final short getSid() {
 		return -1;
 	}

src/java/org/apache/poi/hssf/eventusermodel/dummyrecord/LastCellOfRowDummyRecord.java

@@ -25,37 +25,42 @@ package org.apache.poi.hssf.eventusermodel.dummyrecord;
 public final class LastCellOfRowDummyRecord extends DummyRecordBase {
 	private final int row;
 	private final int lastColumnNumber;
-	
+
 	public LastCellOfRowDummyRecord(int row, int lastColumnNumber) {
 		this.row = row;
 		this.lastColumnNumber = lastColumnNumber;
 	}
-	
+
 	/**
 	 * Returns the (0 based) number of the row we are
 	 *  currently working on.
-	 *  
+	 *
 	 * @return the (0 based) number of the row
 	 */
 	public int getRow() {
 	    return row;
     }
-	
+
 	/**
 	 * Returns the (0 based) number of the last column
 	 *  seen for this row. You should have already been
 	 *  called with that record.
 	 * This is -1 in the case of there being no columns
 	 *  for the row.
-	 *  
+	 *
 	 * @return the (0 based) number of the last column
 	 */
 	public int getLastColumnNumber() {
 	    return lastColumnNumber;
     }
-	
+
 	@Override
 	public String toString() {
 	    return "End-of-Row for Row=" + row + " at Column=" + lastColumnNumber;
 	}
+
+	@Override
+	public LastCellOfRowDummyRecord copy() {
+		return this;
+	}
 }

src/java/org/apache/poi/hssf/eventusermodel/dummyrecord/MissingCellDummyRecord.java

@@ -23,13 +23,18 @@ package org.apache.poi.hssf.eventusermodel.dummyrecord;
  *  but still want to trigger something
  */
 public final class MissingCellDummyRecord extends DummyRecordBase {
-	private int row;
-	private int column;
-	
+	private final int row;
+	private final int column;
+
 	public MissingCellDummyRecord(int row, int column) {
 		this.row = row;
 		this.column = column;
 	}
 	public int getRow() { return row; }
 	public int getColumn() { return column; }
+
+	@Override
+	public MissingCellDummyRecord copy() {
+		return this;
+	}
 }

src/java/org/apache/poi/hssf/eventusermodel/dummyrecord/MissingRowDummyRecord.java

@@ -23,12 +23,17 @@ package org.apache.poi.hssf.eventusermodel.dummyrecord;
  *  want to trigger something
  */
 public final class MissingRowDummyRecord extends DummyRecordBase {
-	private int rowNumber;
-	
+	private final int rowNumber;
+
 	public MissingRowDummyRecord(int rowNumber) {
 		this.rowNumber = rowNumber;
 	}
 	public int getRowNumber() {
 		return rowNumber;
 	}
+
+	@Override
+	public MissingRowDummyRecord copy() {
+		return this;
+	}
 }

src/java/org/apache/poi/hssf/model/InternalSheet.java

@@ -132,7 +132,7 @@ public final class InternalSheet {
         if (rs.peekNextSid() != BOFRecord.sid) {
             throw new RecordFormatException("BOF record expected");
         }
-        
+
         BOFRecord bof = (BOFRecord) rs.getNext();
         if (bof.getType() == BOFRecord.TYPE_WORKSHEET) {
             // Good, well supported
@@ -152,7 +152,7 @@ public final class InternalSheet {
             throw new UnsupportedBOFType(bof.getType());
         }
         records.add(bof);
-        
+
         while (rs.hasNext()) {
             int recSid = rs.peekNextSid();
 
@@ -339,14 +339,14 @@ public final class InternalSheet {
                 recs.add(r);
             }});
     }
-    
+
     public static class UnsupportedBOFType extends RecordFormatException {
         private final int type;
         protected UnsupportedBOFType(int type) {
             super("BOF not of a supported type, found " + type);
             this.type = type;
         }
-        
+
         public int getType() {
             return type;
         }
@@ -360,11 +360,7 @@ public final class InternalSheet {
             _destList = destList;
         }
         public void visitRecord(Record r) {
-            try {
-                _destList.add((Record)r.clone());
-            } catch (CloneNotSupportedException e) {
-                throw new RecordFormatException(e);
-            }
+            _destList.add(r.copy());
         }
     }
 
@@ -374,7 +370,7 @@ public final class InternalSheet {
      * can be added to a sheet. The <b>Record</b> object does not implement cloneable.
      * When adding a new record, implement a public clone method if and only if the record
      * belongs to a sheet.
-     * 
+     *
      * @return the cloned sheet
      */
     public InternalSheet cloneSheet() {
@@ -391,12 +387,8 @@ public final class InternalSheet {
                  */
                 rb = new DrawingRecord();
             }
-            try {
-                Record rec = (Record) ((Record) rb).clone();
-                clonedRecords.add(rec);
-            } catch (CloneNotSupportedException e) {
-                throw new RecordFormatException(e);
-            }
+            Record rec = ((Record) rb).copy();
+            clonedRecords.add(rec);
         }
         return createSheet(new RecordStream(clonedRecords, 0));
     }
@@ -478,7 +470,7 @@ public final class InternalSheet {
 
     /**
      * Updates formulas in cells and conditional formats due to moving of cells
-     * 
+     *
      * @param shifter the formular shifter
      * @param externSheetIndex the externSheet index of this sheet
      */
@@ -995,7 +987,7 @@ public final class InternalSheet {
 
     /**
      * set the default row height for the sheet (if the rows do not define their own height)
-     * 
+     *
      * @param dch the default row height
      */
     public void setDefaultRowHeight(short dch) {
@@ -1247,7 +1239,7 @@ public final class InternalSheet {
 
     /**
      * Gets the gridset record for this sheet.
-     * 
+     *
      * @return the gridset record for this sheet
      */
     public GridsetRecord getGridsetRecord()
@@ -1257,9 +1249,9 @@ public final class InternalSheet {
 
     /**
      * Returns the first occurrence of a record matching a particular sid.
-     * 
+     *
      * @param sid the sid to search for
-     * 
+     *
      * @return the matching record or {@code null} if it wasn't found
      */
     public Record findFirstRecordBySid(short sid) {
@@ -1330,7 +1322,7 @@ public final class InternalSheet {
     {
         printGridlines = newPrintGridlines;
     }
-    
+
     /**
      * Returns the PrintHeadersRecord.
      * @return PrintHeadersRecord for the sheet.
@@ -1519,7 +1511,7 @@ public final class InternalSheet {
     public boolean isDisplayRowColHeadings() {
         return windowTwo.getDisplayRowColHeadings();
     }
-    
+
     /**
      * Sets whether the RowColHeadings are shown in a viewer.
      * @param show whether to show RowColHeadings or not
@@ -1681,7 +1673,7 @@ public final class InternalSheet {
         temp.toArray(result);
         return result;
     }
-    
+
     public int getColumnOutlineLevel(int columnIndex) {
         return _columnInfos.getOutlineLevel(columnIndex);
     }

src/java/org/apache/poi/hssf/model/RecordStream.java

@@ -32,7 +32,7 @@ public final class RecordStream {
 
 	/**
 	 * Creates a RecordStream bounded by startIndex and endIndex
-	 * 
+	 *
 	 * @param inputList the list to iterate over
 	 * @param startIndex the start index within the list
 	 * @param endIx the end index within the list, which is the index of the end element + 1
@@ -70,6 +70,13 @@ public final class RecordStream {
 		return _list.get(_nextIndex).getClass();
 	}
 
+	/**
+	 * @return the next Record. <code>null</code> if this stream is exhausted.
+	 */
+	public Record peekNextRecord() {
+		return (hasNext()) ? _list.get(_nextIndex) : null;
+	}
+
 	/**
 	 * @return -1 if at end of records
 	 */

src/java/org/apache/poi/hssf/record/AbstractEscherHolderRecord.java

@@ -25,14 +25,15 @@ import org.apache.poi.ddf.EscherContainerRecord;
 import org.apache.poi.ddf.EscherRecord;
 import org.apache.poi.ddf.EscherRecordFactory;
 import org.apache.poi.ddf.NullEscherSerializationListener;
-import org.apache.poi.util.LittleEndian;
 import org.apache.poi.hssf.util.LazilyConcatenatedByteArray;
+import org.apache.poi.util.LittleEndian;
+import org.apache.poi.util.Removal;
 
 /**
  * The escher container record is used to hold escher records.  It is abstract and
  * must be subclassed for maximum benefit.
  */
-public abstract class AbstractEscherHolderRecord extends Record implements Cloneable {
+public abstract class AbstractEscherHolderRecord extends Record {
     private static boolean DESERIALISE;
     static {
     try {
@@ -42,17 +43,17 @@ public abstract class AbstractEscherHolderRecord extends Record implements Clone
         }
     }
 
-    private final List<EscherRecord> escherRecords;
+    private final List<EscherRecord> escherRecords = new ArrayList<>();
     private final LazilyConcatenatedByteArray rawDataContainer = new LazilyConcatenatedByteArray();
 
-    public AbstractEscherHolderRecord()
-    {
-        escherRecords = new ArrayList<>();
+    public AbstractEscherHolderRecord() {}
+
+    public AbstractEscherHolderRecord(AbstractEscherHolderRecord other) {
+        other.escherRecords.stream().map(EscherRecord::copy).forEach(escherRecords::add);
+        rawDataContainer.concatenate(other.rawDataContainer);
     }
 
-    public AbstractEscherHolderRecord(RecordInputStream in)
-    {
-        escherRecords = new ArrayList<>();
+    public AbstractEscherHolderRecord(RecordInputStream in) {
         if (! DESERIALISE ) {
             rawDataContainer.concatenate(in.readRemainder());
         } else {
@@ -143,10 +144,16 @@ public abstract class AbstractEscherHolderRecord extends Record implements Clone
     public abstract short getSid();
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public AbstractEscherHolderRecord clone() {
-    	return (AbstractEscherHolderRecord)cloneViaReserialise();
+        return copy();
     }
 
+    @Override
+    public abstract AbstractEscherHolderRecord copy();
+
     public void addEscherRecord(int index, EscherRecord element)
     {
         escherRecords.add( index, element );
@@ -171,7 +178,7 @@ public abstract class AbstractEscherHolderRecord extends Record implements Clone
      * If we have a EscherContainerRecord as one of our
      *  children (and most top level escher holders do),
      *  then return that.
-     * 
+     *
      * @return the EscherContainerRecord or {@code null} if no child is a container record
      */
     public EscherContainerRecord getEscherContainer() {
@@ -187,15 +194,15 @@ public abstract class AbstractEscherHolderRecord extends Record implements Clone
      * Descends into all our children, returning the
      *  first EscherRecord with the given id, or null
      *  if none found
-     *  
+     *
      * @param id the record to look for
-     * 
+     *
      * @return the record or {@code null} if it can't be found
      */
     public EscherRecord findFirstWithId(short id) {
     	return findFirstWithId(id, getEscherRecords());
     }
-    
+
     private EscherRecord findFirstWithId(short id, List<EscherRecord> records) {
     	// Check at our level
     	for (EscherRecord r : records) {
@@ -227,7 +234,7 @@ public abstract class AbstractEscherHolderRecord extends Record implements Clone
     /**
      * Big drawing group records are split but it's easier to deal with them
      * as a whole group so we need to join them together.
-     * 
+     *
      * @param record the record data to concatenate to the end
      */
     public void join( AbstractEscherHolderRecord record )

src/java/org/apache/poi/hssf/record/ArrayRecord.java

@@ -17,18 +17,19 @@
 
 package org.apache.poi.hssf.record;
 
-import org.apache.poi.ss.formula.ptg.Ptg;
 import org.apache.poi.hssf.util.CellRangeAddress8Bit;
 import org.apache.poi.ss.formula.Formula;
+import org.apache.poi.ss.formula.ptg.Ptg;
 import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
  * ARRAY (0x0221)<p>
  *
  * Treated in a similar way to SharedFormulaRecord
  */
-public final class ArrayRecord extends SharedValueRecordBase implements Cloneable {
+public final class ArrayRecord extends SharedValueRecordBase {
 
 	public final static short sid = 0x0221;
 	private static final int OPT_ALWAYS_RECALCULATE = 0x0001;
@@ -38,6 +39,13 @@ public final class ArrayRecord extends SharedValueRecordBase implements Cloneabl
 	private int _field3notUsed;
 	private Formula _formula;
 
+	public ArrayRecord(ArrayRecord other) {
+		super(other);
+		_options = other._options;
+		_field3notUsed = other._field3notUsed;
+		_formula = (other._formula == null) ? null : other._formula.copy();
+	}
+
 	public ArrayRecord(RecordInputStream in) {
 		super(in);
 		_options = in.readUShort();
@@ -92,16 +100,18 @@ public final class ArrayRecord extends SharedValueRecordBase implements Cloneabl
 		}
 		sb.append("]");
 		return sb.toString();
-	}	
-    
-	@Override
-    public ArrayRecord clone() {
-        ArrayRecord rec = new ArrayRecord(_formula.copy(), getRange());
+	}
 
-        // they both seem unused, but clone them nevertheless to have an exact copy
-        rec._options = _options;
-        rec._field3notUsed = _field3notUsed;
+	@Override
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
+	public ArrayRecord clone() {
+		return copy();
+	}
 
-        return rec;
+	@Override
+    public ArrayRecord copy() {
+        return new ArrayRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/AutoFilterInfoRecord.java

@@ -20,27 +20,28 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
  * The AutoFilterInfo record specifies the number of columns that have AutoFilter enabled
  * and indicates the beginning of the collection of AutoFilter records.
- *
- * @author Yegor Kozlov
  */
 
-public final class AutoFilterInfoRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x9D;
+public final class AutoFilterInfoRecord extends StandardRecord {
+    public static final short sid = 0x9D;
     /**
      * Number of AutoFilter drop-down arrows on the sheet
      */
-    private short             _cEntries;   // = 0;
+    private short _cEntries;
 
-    public AutoFilterInfoRecord()
-    {
+    public AutoFilterInfoRecord() {}
+
+    public AutoFilterInfoRecord(AutoFilterInfoRecord other) {
+        super(other);
+        _cEntries = other._cEntries;
     }
 
-    public AutoFilterInfoRecord(RecordInputStream in)
-    {
+    public AutoFilterInfoRecord(RecordInputStream in) {
         _cEntries = in.readShort();
     }
 
@@ -91,9 +92,15 @@ public final class AutoFilterInfoRecord extends StandardRecord implements Clonea
     }
 
     @Override
-    public AutoFilterInfoRecord clone()
-    {
-    	return (AutoFilterInfoRecord)cloneViaReserialise();
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
+    public AutoFilterInfoRecord clone() {
+        return copy();
+    }
+
+    @Override
+    public AutoFilterInfoRecord copy() {
+        return new AutoFilterInfoRecord(this);
     }
-    
 }

src/java/org/apache/poi/hssf/record/BOFRecord.java

@@ -19,44 +19,40 @@ package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title: Beginning Of File (0x0809)<P>
- * Description: Somewhat of a misnomer, its used for the beginning of a set of
- *              records that have a particular purpose or subject.
- *              Used in sheets and workbooks.<P>
- * REFERENCE:  PG 289 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver
- * @author Jason Height (jheight at chariot dot net dot au)
+ * Somewhat of a misnomer, its used for the beginning of a set of records that
+ * have a particular purpose or subject. Used in sheets and workbooks.
  */
-public final class BOFRecord extends StandardRecord implements Cloneable {
+public final class BOFRecord extends StandardRecord {
     /**
      * for BIFF8 files the BOF is 0x809. For earlier versions see
-     *  {@link #biff2_sid} {@link #biff3_sid} {@link #biff4_sid} 
+     *  {@link #biff2_sid} {@link #biff3_sid} {@link #biff4_sid}
      *  {@link #biff5_sid}
      */
-    public final static short sid = 0x809;
+    public static final short sid = 0x809;
     // SIDs from earlier BIFF versions
-    public final static short biff2_sid = 0x009;
-    public final static short biff3_sid = 0x209;
-    public final static short biff4_sid = 0x409;
-    public final static short biff5_sid = 0x809;
+    public static final short biff2_sid = 0x009;
+    public static final short biff3_sid = 0x209;
+    public static final short biff4_sid = 0x409;
+    public static final short biff5_sid = 0x809;
 
     /** suggested default (0x0600 - BIFF8) */
-    public final static int VERSION             = 0x0600;
+    public static final int VERSION             = 0x0600;
     /** suggested default 0x10d3 */
-    public final static int BUILD               = 0x10d3;
+    public static final int BUILD               = 0x10d3;
     /** suggested default  0x07CC (1996) */
-    public final static int BUILD_YEAR          = 0x07CC;   // 1996
+    public static final int BUILD_YEAR          = 0x07CC;   // 1996
     /** suggested default for a normal sheet (0x41) */
-    public final static int HISTORY_MASK        = 0x41;
+    public static final int HISTORY_MASK        = 0x41;
 
-    public final static int TYPE_WORKBOOK       = 0x05;
-    public final static int TYPE_VB_MODULE      = 0x06;
-    public final static int TYPE_WORKSHEET      = 0x10;
-    public final static int TYPE_CHART          = 0x20;
-    public final static int TYPE_EXCEL_4_MACRO  = 0x40;
-    public final static int TYPE_WORKSPACE_FILE = 0x100;
+    public static final int TYPE_WORKBOOK       = 0x05;
+    public static final int TYPE_VB_MODULE      = 0x06;
+    public static final int TYPE_WORKSHEET      = 0x10;
+    public static final int TYPE_CHART          = 0x20;
+    public static final int TYPE_EXCEL_4_MACRO  = 0x40;
+    public static final int TYPE_WORKSPACE_FILE = 0x100;
 
     private int field_1_version;
     private int field_2_type;
@@ -68,9 +64,18 @@ public final class BOFRecord extends StandardRecord implements Cloneable {
     /**
      * Constructs an empty BOFRecord with no fields set.
      */
-    public BOFRecord() {
+    public BOFRecord() {}
+
+    public BOFRecord(BOFRecord other) {
+        super(other);
+        field_1_version = other.field_1_version;
+        field_2_type = other.field_2_type;
+        field_3_build = other.field_3_build;
+        field_4_year = other.field_4_year;
+        field_5_history = other.field_5_history;
+        field_6_rversion = other.field_6_rversion;
     }
-    
+
     private BOFRecord(int type) {
         field_1_version = VERSION;
         field_2_type = type;
@@ -79,7 +84,7 @@ public final class BOFRecord extends StandardRecord implements Cloneable {
         field_5_history = 0x01;
         field_6_rversion = VERSION;
     }
-    
+
     public static BOFRecord createSheetBOF() {
         return new BOFRecord(TYPE_WORKSHEET);
     }
@@ -269,14 +274,15 @@ public final class BOFRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public BOFRecord clone() {
-      BOFRecord rec = new BOFRecord();
-      rec.field_1_version = field_1_version;
-      rec.field_2_type = field_2_type;
-      rec.field_3_build = field_3_build;
-      rec.field_4_year = field_4_year;
-      rec.field_5_history = field_5_history;
-      rec.field_6_rversion = field_6_rversion;
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public BOFRecord copy() {
+        return new BOFRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/BackupRecord.java

@@ -15,33 +15,31 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Title:        Backup Record <P>
- * Description:  Boolean specifying whether
- *               the GUI should store a backup of the file.<P>
- * REFERENCE:  PG 287 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
+ * Boolean specifying whether the GUI should store a backup of the file.
+ *
  * @version 2.0-pre
  */
 
-public final class BackupRecord
-    extends StandardRecord
-{
-    public final static short sid = 0x40;
-    private short             field_1_backup;   // = 0;
+public final class BackupRecord extends StandardRecord {
+    public static final short sid = 0x40;
 
-    public BackupRecord()
-    {
+    private short field_1_backup;
+
+    public BackupRecord() {}
+
+    public BackupRecord(BackupRecord other) {
+        super(other);
+        field_1_backup = other.field_1_backup;
     }
 
-    public BackupRecord(RecordInputStream in)
-    {
+    public BackupRecord(RecordInputStream in) {
         field_1_backup = in.readShort();
     }
 
@@ -90,4 +88,9 @@ public final class BackupRecord
     {
         return sid;
     }
+
+    @Override
+    public BackupRecord copy() {
+        return new BackupRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/BlankRecord.java

@@ -19,28 +19,32 @@ package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Blank cell record (0x0201) <P>
- * Description:  Represents a column in a row with no value but with styling.<P>
- * REFERENCE:  PG 287 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author Jason Height (jheight at chariot dot net dot au)
+ * Represents a column in a row with no value but with styling.
+ *
  * @version 2.0-pre
  */
-public final class BlankRecord extends StandardRecord implements CellValueRecordInterface, Cloneable {
-    public final static short sid = 0x0201;
-    private int             field_1_row;
-    private short             field_2_col;
-    private short             field_3_xf;
+public final class BlankRecord extends StandardRecord implements CellValueRecordInterface {
+    public static final short sid = 0x0201;
+
+    private int field_1_row;
+    private short field_2_col;
+    private short field_3_xf;
 
     /** Creates a new instance of BlankRecord */
-    public BlankRecord()
-    {
+    public BlankRecord() {}
+
+    public BlankRecord(BlankRecord other) {
+        super(other);
+        field_1_row = other.field_1_row;
+        field_2_col = other.field_2_col;
+        field_3_xf  = other.field_3_xf;
     }
 
-    public BlankRecord(RecordInputStream in)
-    {
+
+    public BlankRecord(RecordInputStream in) {
         field_1_row = in.readUShort();
         field_2_col = in.readShort();
         field_3_xf  = in.readShort();
@@ -138,11 +142,15 @@ public final class BlankRecord extends StandardRecord implements CellValueRecord
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public BlankRecord clone() {
-      BlankRecord rec = new BlankRecord();
-      rec.field_1_row = field_1_row;
-      rec.field_2_col = field_2_col;
-      rec.field_3_xf = field_3_xf;
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public BlankRecord copy() {
+        return new BlankRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/BookBoolRecord.java

@@ -15,33 +15,31 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Title:        Save External Links record (BookBool)<P>
- * Description:  Contains a flag specifying whether the Gui should save externally
- *               linked values from other workbooks. <P>
- * REFERENCE:  PG 289 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
+ * Contains a flag specifying whether the Gui should save externally linked values from other workbooks.
+ *
  * @version 2.0-pre
  */
 
-public final class BookBoolRecord
-    extends StandardRecord
-{
-    public final static short sid = 0xDA;
-    private short             field_1_save_link_values;
+public final class BookBoolRecord extends StandardRecord {
+    public static final short sid = 0xDA;
 
-    public BookBoolRecord()
-    {
+    private short field_1_save_link_values;
+
+    public BookBoolRecord() {}
+
+    public BookBoolRecord(BookBoolRecord other) {
+        super(other);
+        field_1_save_link_values = other.field_1_save_link_values;
     }
 
-    public BookBoolRecord(RecordInputStream in)
-    {
+    public BookBoolRecord(RecordInputStream in) {
         field_1_save_link_values = in.readShort();
     }
 
@@ -90,4 +88,9 @@ public final class BookBoolRecord
     {
         return sid;
     }
+
+    @Override
+    public BookBoolRecord copy() {
+        return new BookBoolRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/BoolErrRecord.java

@@ -21,24 +21,27 @@ import org.apache.poi.ss.usermodel.FormulaError;
 import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.RecordFormatException;
+import org.apache.poi.util.Removal;
 
 /**
- * Creates new BoolErrRecord. (0x0205) <P>
- * REFERENCE:  PG ??? Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Michael P. Harhen
- * @author Jason Height (jheight at chariot dot net dot au)
+ * Creates new BoolErrRecord. (0x0205)
  */
-public final class BoolErrRecord extends CellRecord implements Cloneable {
-	public final static short sid = 0x0205;
+public final class BoolErrRecord extends CellRecord {
+	public static final short sid = 0x0205;
 	private int _value;
 	/**
-	 * If <code>true</code>, this record represents an error cell value, otherwise this record represents a boolean cell value
+	 * If <code>true</code>, this record represents an error cell value,
+	 * otherwise this record represents a boolean cell value
 	 */
 	private boolean _isError;
 
 	/** Creates new BoolErrRecord */
-	public BoolErrRecord() {
-		// fields uninitialised
+	public BoolErrRecord() {}
+
+	public BoolErrRecord(BoolErrRecord other) {
+		super(other);
+		_value = other._value;
+		_isError = other._isError;
 	}
 
 	/**
@@ -183,11 +186,15 @@ public final class BoolErrRecord extends CellRecord implements Cloneable {
 	}
 
 	@Override
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
 	public BoolErrRecord clone() {
-	  BoolErrRecord rec = new BoolErrRecord();
-	  copyBaseFields(rec);
-	  rec._value = _value;
-	  rec._isError = _isError;
-	  return rec;
+		return copy();
+	}
+
+	@Override
+	public BoolErrRecord copy() {
+		return new BoolErrRecord(this);
 	}
 }

src/java/org/apache/poi/hssf/record/BottomMarginRecord.java

@@ -20,22 +20,24 @@ package org.apache.poi.hssf.record;
 
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 
 /**
  * Record for the bottom margin.
  */
-public final class BottomMarginRecord extends StandardRecord implements Margin, Cloneable {
-    public final static short sid = 0x29;
+public final class BottomMarginRecord extends StandardRecord implements Margin {
+    public static final short sid = 0x29;
     private double field_1_margin;
 
-    public BottomMarginRecord()
-    {
+    public BottomMarginRecord() {}
 
+    public BottomMarginRecord(BottomMarginRecord other) {
+        super(other);
+        field_1_margin = other.field_1_margin;
     }
 
-    public BottomMarginRecord( RecordInputStream in )
-    {
+    public BottomMarginRecord( RecordInputStream in ) {
         field_1_margin = in.readDouble();
     }
 
@@ -79,10 +81,15 @@ public final class BottomMarginRecord extends StandardRecord implements Margin,
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public BottomMarginRecord clone() {
-        BottomMarginRecord rec = new BottomMarginRecord();
-        rec.field_1_margin = this.field_1_margin;
-        return rec;
+        return copy();
     }
 
-}  // END OF 
+    @Override
+    public BottomMarginRecord copy() {
+        return new BottomMarginRecord(this);
+    }
+}

src/java/org/apache/poi/hssf/record/BoundSheetRecord.java

@@ -18,9 +18,9 @@
 package org.apache.poi.hssf.record;
 
 import java.util.Arrays;
-import java.util.Comparator;
 import java.util.List;
 
+import org.apache.poi.ss.util.WorkbookUtil;
 import org.apache.poi.util.BitField;
 import org.apache.poi.util.BitFieldFactory;
 import org.apache.poi.util.HexDump;
@@ -28,20 +28,16 @@ import org.apache.poi.util.LittleEndian;
 import org.apache.poi.util.LittleEndianConsts;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.StringUtil;
-import org.apache.poi.ss.util.WorkbookUtil;
 
 /**
- * Title:        Bound Sheet Record (aka BundleSheet) (0x0085)<P>
- * Description:  Defines a sheet within a workbook.  Basically stores the sheet name
- *               and tells where the Beginning of file record is within the HSSF
- *               file. <P>
- * REFERENCE:  PG 291 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
+ * Defines a sheet within a workbook. Basically stores the sheet name and
+ * tells where the Beginning of file record is within the HSSF file.
  */
 public final class BoundSheetRecord extends StandardRecord {
-	public final static short sid = 0x0085;
-
+	public static final short sid = 0x0085;
 	private static final BitField hiddenFlag = BitFieldFactory.getInstance(0x01);
 	private static final BitField veryHiddenFlag = BitFieldFactory.getInstance(0x02);
+
 	private int field_1_position_of_BOF;
 	private int field_2_option_flags;
 	private int field_4_isMultibyteUnicode;
@@ -52,13 +48,21 @@ public final class BoundSheetRecord extends StandardRecord {
 		setSheetname(sheetname);
 	}
 
+	public BoundSheetRecord(BoundSheetRecord other) {
+		super(other);
+		field_1_position_of_BOF = other.field_1_position_of_BOF;
+		field_2_option_flags = other.field_2_option_flags;
+		field_4_isMultibyteUnicode = other.field_4_isMultibyteUnicode;
+		field_5_sheetname = other.field_5_sheetname;
+	}
+
 	/**
 	 * UTF8: sid + len + bof + flags + len(str) + unicode + str 2 + 2 + 4 + 2 +
 	 * 1 + 1 + len(str)
 	 *
 	 * UNICODE: sid + len + bof + flags + len(str) + unicode + str 2 + 2 + 4 + 2 +
 	 * 1 + 1 + 2 * len(str)
-	 * 
+	 *
 	 * @param in the record stream to read from
 	 */
 	public BoundSheetRecord(RecordInputStream in) {
@@ -158,7 +162,7 @@ public final class BoundSheetRecord extends StandardRecord {
 
 	/**
 	 * Is the sheet hidden? Different from very hidden
-	 * 
+	 *
 	 * @return {@code true} if hidden
 	 */
 	public boolean isHidden() {
@@ -167,7 +171,7 @@ public final class BoundSheetRecord extends StandardRecord {
 
 	/**
 	 * Is the sheet hidden? Different from very hidden
-	 * 
+	 *
 	 * @param hidden {@code true} if hidden
 	 */
 	public void setHidden(boolean hidden) {
@@ -176,7 +180,7 @@ public final class BoundSheetRecord extends StandardRecord {
 
 	/**
 	 * Is the sheet very hidden? Different from (normal) hidden
-	 * 
+	 *
 	 * @return {@code true} if very hidden
 	 */
 	public boolean isVeryHidden() {
@@ -185,7 +189,7 @@ public final class BoundSheetRecord extends StandardRecord {
 
 	/**
 	 * Is the sheet very hidden? Different from (normal) hidden
-	 * 
+	 *
 	 * @param veryHidden {@code true} if very hidden
 	 */
 	public void setVeryHidden(boolean veryHidden) {
@@ -195,22 +199,24 @@ public final class BoundSheetRecord extends StandardRecord {
 	/**
 	 * Converts a List of {@link BoundSheetRecord}s to an array and sorts by the position of their
 	 * BOFs.
-	 * 
+	 *
 	 * @param boundSheetRecords the boundSheetRecord list to arrayify
-	 * 
+	 *
 	 * @return the sorted boundSheetRecords
 	 */
 	public static BoundSheetRecord[] orderByBofPosition(List<BoundSheetRecord> boundSheetRecords) {
 		BoundSheetRecord[] bsrs = new BoundSheetRecord[boundSheetRecords.size()];
 		boundSheetRecords.toArray(bsrs);
-		Arrays.sort(bsrs, BOFComparator);
+		Arrays.sort(bsrs, BoundSheetRecord::compareRecords);
 	 	return bsrs;
 	}
-	
-	private static final Comparator<BoundSheetRecord> BOFComparator = new Comparator<BoundSheetRecord>() {
 
-		public int compare(BoundSheetRecord bsr1, BoundSheetRecord bsr2) {
-			return bsr1.getPositionOfBof() - bsr2.getPositionOfBof();
-		}
-	};
+	private static int compareRecords(BoundSheetRecord bsr1, BoundSheetRecord bsr2) {
+		return bsr1.getPositionOfBof() - bsr2.getPositionOfBof();
+	}
+
+	@Override
+	public BoundSheetRecord copy() {
+		return new BoundSheetRecord(this);
+	}
 }

src/java/org/apache/poi/hssf/record/CFHeader12Record.java

@@ -21,22 +21,28 @@ import org.apache.poi.hssf.record.common.FtrHeader;
 import org.apache.poi.hssf.record.common.FutureRecord;
 import org.apache.poi.ss.util.CellRangeAddress;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
  * Conditional Formatting Header v12 record CFHEADER12 (0x0879),
  *  for conditional formattings introduced in Excel 2007 and newer.
  */
-public final class CFHeader12Record extends CFHeaderBase implements FutureRecord, Cloneable {
+public final class CFHeader12Record extends CFHeaderBase implements FutureRecord {
     public static final short sid = 0x0879;
 
     private FtrHeader futureHeader;
 
-    /** Creates new CFHeaderRecord */
     public CFHeader12Record() {
         createEmpty();
         futureHeader = new FtrHeader();
         futureHeader.setRecordType(sid);
     }
+
+    public CFHeader12Record(CFHeader12Record other) {
+        super(other);
+        futureHeader = other.futureHeader.copy();
+    }
+
     public CFHeader12Record(CellRangeAddress[] regions, int nRules) {
         super(regions, nRules);
         futureHeader = new FtrHeader();
@@ -78,12 +84,17 @@ public final class CFHeader12Record extends CFHeaderBase implements FutureRecord
     public CellRangeAddress getAssociatedRange() {
         return futureHeader.getAssociatedRange();
     }
-    
+
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public CFHeader12Record clone() {
-        CFHeader12Record result = new CFHeader12Record();
-        result.futureHeader = (FtrHeader)futureHeader.clone();
-        super.copyTo(result);
-        return result;
+        return copy();
+    }
+
+    @Override
+    public CFHeader12Record copy() {
+        return new CFHeader12Record(this);
     }
 }

src/java/org/apache/poi/hssf/record/CFHeaderBase.java

@@ -21,20 +21,28 @@ import org.apache.poi.ss.util.CellRangeAddress;
 import org.apache.poi.ss.util.CellRangeAddressList;
 import org.apache.poi.ss.util.CellRangeUtil;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
  * Parent of Conditional Formatting Header records,
  *  {@link CFHeaderRecord} and {@link CFHeader12Record}.
  */
-public abstract class CFHeaderBase extends StandardRecord implements Cloneable {
+public abstract class CFHeaderBase extends StandardRecord {
     private int field_1_numcf;
     private int field_2_need_recalculation_and_id;
     private CellRangeAddress field_3_enclosing_cell_range;
     private CellRangeAddressList field_4_cell_ranges;
 
-    /** Creates new CFHeaderBase */
-    protected CFHeaderBase() {
+    protected CFHeaderBase() {}
+
+    protected CFHeaderBase(CFHeaderBase other) {
+        super(other);
+        field_1_numcf = other.field_1_numcf;
+        field_2_need_recalculation_and_id = other.field_2_need_recalculation_and_id;
+        field_3_enclosing_cell_range = other.field_3_enclosing_cell_range.copy();
+        field_4_cell_ranges = other.field_4_cell_ranges.copy();
     }
+
     protected CFHeaderBase(CellRangeAddress[] regions, int nRules) {
         CellRangeAddress[] mergeCellRanges = CellRangeUtil.mergeCellRanges(regions);
         setCellRanges(mergeCellRanges);
@@ -97,7 +105,7 @@ public abstract class CFHeaderBase extends StandardRecord implements Cloneable {
     }
 
     /**
-     * Set cell ranges list to a single cell range and 
+     * Set cell ranges list to a single cell range and
      * modify the enclosing cell range accordingly.
      * @param cellRanges - list of CellRange objects
      */
@@ -151,13 +159,12 @@ public abstract class CFHeaderBase extends StandardRecord implements Cloneable {
         field_4_cell_ranges.serialize(out);
     }
 
-    protected void copyTo(CFHeaderBase result) {
-        result.field_1_numcf = field_1_numcf;
-        result.field_2_need_recalculation_and_id = field_2_need_recalculation_and_id;
-        result.field_3_enclosing_cell_range = field_3_enclosing_cell_range.copy();
-        result.field_4_cell_ranges = field_4_cell_ranges.copy();
-    }
+    @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
+    public abstract CFHeaderBase clone();
 
     @Override
-    public abstract CFHeaderBase clone(); // NOSONAR
+    public abstract CFHeaderBase copy();
 }

src/java/org/apache/poi/hssf/record/CFHeaderRecord.java

@@ -18,19 +18,24 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.ss.util.CellRangeAddress;
+import org.apache.poi.util.Removal;
 
 /**
  * Conditional Formatting Header record CFHEADER (0x01B0).
  * Used to describe a {@link CFRuleRecord}.
  * @see CFHeader12Record
  */
-public final class CFHeaderRecord extends CFHeaderBase implements Cloneable {
+public final class CFHeaderRecord extends CFHeaderBase {
     public static final short sid = 0x01B0;
 
-    /** Creates new CFHeaderRecord */
     public CFHeaderRecord() {
         createEmpty();
     }
+
+    public CFHeaderRecord(CFHeaderRecord other) {
+        super(other);
+    }
+
     public CFHeaderRecord(CellRangeAddress[] regions, int nRules) {
         super(regions, nRules);
     }
@@ -48,9 +53,15 @@ public final class CFHeaderRecord extends CFHeaderBase implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public CFHeaderRecord clone() {
-        CFHeaderRecord result = new CFHeaderRecord();
-        super.copyTo(result);
-        return result;
+        return copy();
+    }
+
+    @Override
+    public CFHeaderRecord copy() {
+        return new CFHeaderRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/CFRule12Record.java

@@ -39,18 +39,19 @@ import org.apache.poi.util.HexDump;
 import org.apache.poi.util.IOUtils;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.POILogger;
+import org.apache.poi.util.Removal;
 
 /**
- * Conditional Formatting v12 Rule Record (0x087A). 
- * 
+ * Conditional Formatting v12 Rule Record (0x087A).
+ *
  * <p>This is for newer-style Excel conditional formattings,
  *  from Excel 2007 onwards.
- *  
+ *
  * <p>{@link CFRuleRecord} is used where the condition type is
  *  {@link #CONDITION_TYPE_CELL_VALUE_IS} or {@link #CONDITION_TYPE_FORMULA},
  *  this is only used for the other types
  */
-public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cloneable {
+public final class CFRule12Record extends CFRuleBase implements FutureRecord {
 
     //arbitrarily selected; may need to increase
     private static final int MAX_RECORD_LENGTH = 100_000;
@@ -66,14 +67,35 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
     private int template_type;
     private byte template_param_length;
     private byte[] template_params;
-    
+
     private DataBarFormatting data_bar;
     private IconMultiStateFormatting multistate;
     private ColorGradientFormatting color_gradient;
     // TODO Parse this, see #58150
     private byte[] filter_data;
 
-    /** Creates new CFRuleRecord */
+    public CFRule12Record(CFRule12Record other) {
+        super(other);
+        futureHeader = (other.futureHeader == null) ? null : other.futureHeader.copy();
+
+        // use min() to gracefully handle cases where the length-property and the array-length do not match
+        // we saw some such files in circulation
+        ext_formatting_length = Math.min(other.ext_formatting_length, other.ext_formatting_data.length);
+        ext_formatting_data = other.ext_formatting_data.clone();
+
+        formula_scale = other.formula_scale.copy();
+
+        ext_opts = other.ext_opts;
+        priority = other.priority;
+        template_type = other.template_type;
+        template_param_length = other.template_param_length;
+        template_params = (other.template_params == null) ? null : other.template_params.clone();
+        color_gradient = (other.color_gradient == null) ? null : other.color_gradient.copy();
+        multistate = (other.multistate == null) ? null : other.multistate.copy();
+        data_bar = (other.data_bar == null) ? null : other.data_bar.copy();
+        filter_data = (other.filter_data == null) ? null : other.filter_data.clone();
+    }
+
     private CFRule12Record(byte conditionType, byte comparisonOperation) {
         super(conditionType, comparisonOperation);
         setDefaults();
@@ -84,15 +106,17 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
         setDefaults();
         this.formula_scale = Formula.create(formulaScale);
     }
+
+
     private void setDefaults() {
         futureHeader = new FtrHeader();
         futureHeader.setRecordType(sid);
-        
+
         ext_formatting_length = 0;
         ext_formatting_data = new byte[4];
-        
+
         formula_scale = Formula.create(Ptg.EMPTY_PTG_ARRAY);
-        
+
         ext_opts = 0;
         priority = 0;
         template_type = getConditionType();
@@ -102,10 +126,10 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
 
     /**
      * Creates a new comparison operation rule
-     * 
+     *
      * @param sheet the sheet
      * @param formulaText the first formula text
-     * 
+     *
      * @return a new comparison operation rule
      */
     public static CFRule12Record create(HSSFSheet sheet, String formulaText) {
@@ -113,34 +137,34 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
         return new CFRule12Record(CONDITION_TYPE_FORMULA, ComparisonOperator.NO_COMPARISON,
                 formula1, null, null);
     }
-    
+
     /**
      * Creates a new comparison operation rule
-     * 
+     *
      * @param sheet the sheet
      * @param comparisonOperation the comparison operation
      * @param formulaText1 the first formula text
      * @param formulaText2 the second formula text
-     * 
+     *
      * @return a new comparison operation rule
      */
     public static CFRule12Record create(HSSFSheet sheet, byte comparisonOperation,
             String formulaText1, String formulaText2) {
         Ptg[] formula1 = parseFormula(formulaText1, sheet);
         Ptg[] formula2 = parseFormula(formulaText2, sheet);
-        return new CFRule12Record(CONDITION_TYPE_CELL_VALUE_IS, comparisonOperation, 
+        return new CFRule12Record(CONDITION_TYPE_CELL_VALUE_IS, comparisonOperation,
                 formula1, formula2, null);
     }
-    
+
     /**
      * Creates a new comparison operation rule
-     * 
+     *
      * @param sheet the sheet
      * @param comparisonOperation the comparison operation
      * @param formulaText1 the first formula text
      * @param formulaText2 the second formula text
      * @param formulaTextScale the scale to apply for the comparison
-     * 
+     *
      * @return a new comparison operation rule
      */
     public static CFRule12Record create(HSSFSheet sheet, byte comparisonOperation,
@@ -148,43 +172,43 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
         Ptg[] formula1 = parseFormula(formulaText1, sheet);
         Ptg[] formula2 = parseFormula(formulaText2, sheet);
         Ptg[] formula3 = parseFormula(formulaTextScale, sheet);
-        return new CFRule12Record(CONDITION_TYPE_CELL_VALUE_IS, comparisonOperation, 
+        return new CFRule12Record(CONDITION_TYPE_CELL_VALUE_IS, comparisonOperation,
                 formula1, formula2, formula3);
     }
-    
+
     /**
      * Creates a new Data Bar formatting
-     * 
+     *
      * @param sheet the sheet
      * @param color the data bar color
-     * 
+     *
      * @return a new Data Bar formatting
      */
     public static CFRule12Record create(HSSFSheet sheet, ExtendedColor color) {
-        CFRule12Record r = new CFRule12Record(CONDITION_TYPE_DATA_BAR, 
+        CFRule12Record r = new CFRule12Record(CONDITION_TYPE_DATA_BAR,
                                               ComparisonOperator.NO_COMPARISON);
         DataBarFormatting dbf = r.createDataBarFormatting();
         dbf.setColor(color);
         dbf.setPercentMin((byte)0);
         dbf.setPercentMax((byte)100);
-        
+
         DataBarThreshold min = new DataBarThreshold();
         min.setType(RangeType.MIN.id);
         dbf.setThresholdMin(min);
-        
+
         DataBarThreshold max = new DataBarThreshold();
         max.setType(RangeType.MAX.id);
         dbf.setThresholdMax(max);
-        
+
         return r;
     }
-    
+
     /**
      * Creates a new Icon Set / Multi-State formatting
-     * 
+     *
      * @param sheet the sheet
      * @param iconSet the icon set
-     * 
+     *
      * @return a new Icon Set / Multi-State formatting
      */
     public static CFRule12Record create(HSSFSheet sheet, IconSet iconSet) {
@@ -192,20 +216,20 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
         for (int i=0; i<ts.length; i++) {
             ts[i] = new IconMultiStateThreshold();
         }
-        
-        CFRule12Record r = new CFRule12Record(CONDITION_TYPE_ICON_SET, 
+
+        CFRule12Record r = new CFRule12Record(CONDITION_TYPE_ICON_SET,
                                               ComparisonOperator.NO_COMPARISON);
         IconMultiStateFormatting imf = r.createMultiStateFormatting();
         imf.setIconSet(iconSet);
         imf.setThresholds(ts);
         return r;
     }
-    
+
     /**
      * Creates a new Color Scale / Color Gradient formatting
-     * 
+     *
      * @param sheet the sheet
-     * 
+     *
      * @return a new Color Scale / Color Gradient formatting
      */
     public static CFRule12Record createColorScale(HSSFSheet sheet) {
@@ -216,8 +240,8 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
             ts[i] = new ColorGradientThreshold();
             colors[i] = new ExtendedColor();
         }
-        
-        CFRule12Record r = new CFRule12Record(CONDITION_TYPE_COLOR_SCALE, 
+
+        CFRule12Record r = new CFRule12Record(CONDITION_TYPE_COLOR_SCALE,
                                               ComparisonOperator.NO_COMPARISON);
         ColorGradientFormatting cgf = r.createColorGradientFormatting();
         cgf.setNumControlPoints(numPoints);
@@ -232,7 +256,7 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
         setComparisonOperation(in.readByte());
         int field_3_formula1_len = in.readUShort();
         int field_4_formula2_len = in.readUShort();
-        
+
         ext_formatting_length = in.readInt();
         ext_formatting_data = new byte[0];
         if (ext_formatting_length == 0) {
@@ -245,13 +269,13 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
                 in.readFully(ext_formatting_data);
             }
         }
-        
+
         setFormula1(Formula.read(field_3_formula1_len, in));
         setFormula2(Formula.read(field_4_formula2_len, in));
-        
+
         int formula_scale_len = in.readUShort();
         formula_scale = Formula.read(formula_scale_len, in);
-        
+
         ext_opts = in.readByte();
         priority = in.readUShort();
         template_type = in.readUShort();
@@ -263,7 +287,7 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
             logger.log(POILogger.WARN, "CF Rule v12 template params length should be 0 or 16, found " + template_param_length);
             in.readRemainder();
         }
-        
+
         byte type = getConditionType();
         if (type == CONDITION_TYPE_COLOR_SCALE) {
             color_gradient = new ColorGradientFormatting(in);
@@ -275,7 +299,7 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
             multistate = new IconMultiStateFormatting(in);
         }
     }
-    
+
     public boolean containsDataBarBlock() {
         return (data_bar != null);
     }
@@ -284,7 +308,7 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
     }
     public DataBarFormatting createDataBarFormatting() {
         if (data_bar != null) return data_bar;
-        
+
         // Convert, setup and return
         setConditionType(CONDITION_TYPE_DATA_BAR);
         data_bar = new DataBarFormatting();
@@ -299,7 +323,7 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
     }
     public IconMultiStateFormatting createMultiStateFormatting() {
         if (multistate != null) return multistate;
-        
+
         // Convert, setup and return
         setConditionType(CONDITION_TYPE_ICON_SET);
         multistate = new IconMultiStateFormatting();
@@ -314,7 +338,7 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
     }
     public ColorGradientFormatting createColorGradientFormatting() {
         if (color_gradient != null) return color_gradient;
-        
+
         // Convert, setup and return
         setConditionType(CONDITION_TYPE_COLOR_SCALE);
         color_gradient = new ColorGradientFormatting();
@@ -356,7 +380,7 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
      */
     public void serialize(LittleEndianOutput out) {
         futureHeader.serialize(out);
-        
+
         int formula1Len=getFormulaSize(getFormula1());
         int formula2Len=getFormulaSize(getFormula2());
 
@@ -364,7 +388,7 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
         out.writeByte(getComparisonOperation());
         out.writeShort(formula1Len);
         out.writeShort(formula2Len);
-        
+
         // TODO Update ext_formatting_length
         if (ext_formatting_length == 0) {
             out.writeInt(0);
@@ -374,18 +398,18 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
             serializeFormattingBlock(out);
             out.write(ext_formatting_data);
         }
-        
+
         getFormula1().serializeTokens(out);
         getFormula2().serializeTokens(out);
         out.writeShort(getFormulaSize(formula_scale));
         formula_scale.serializeTokens(out);
-        
+
         out.writeByte(ext_opts);
         out.writeShort(priority);
         out.writeShort(template_type);
         out.writeByte(template_param_length);
         out.write(template_params);
-        
+
         byte type = getConditionType();
         if (type == CONDITION_TYPE_COLOR_SCALE) {
             color_gradient.serialize(out);
@@ -409,7 +433,7 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
         len += getFormulaSize(getFormula2());
         len += 2 + getFormulaSize(formula_scale);
         len += 6 + template_params.length;
-        
+
         byte type = getConditionType();
         if (type == CONDITION_TYPE_COLOR_SCALE) {
             len += color_gradient.getDataLength();
@@ -461,44 +485,18 @@ public final class CFRule12Record extends CFRuleBase implements FutureRecord, Cl
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public CFRule12Record clone() {
-        CFRule12Record rec = new CFRule12Record(getConditionType(), getComparisonOperation());
-        rec.futureHeader.setAssociatedRange(futureHeader.getAssociatedRange().copy());
-        
-        super.copyTo(rec);
-
-        // use min() to gracefully handle cases where the length-property and the array-length do not match
-        // we saw some such files in circulation
-        rec.ext_formatting_length = Math.min(ext_formatting_length, ext_formatting_data.length);
-        rec.ext_formatting_data = IOUtils.safelyAllocate(ext_formatting_length, MAX_RECORD_LENGTH);
-        System.arraycopy(ext_formatting_data, 0, rec.ext_formatting_data, 0, rec.ext_formatting_length);
-        
-        rec.formula_scale = formula_scale.copy();
-        
-        rec.ext_opts = ext_opts;
-        rec.priority = priority;
-        rec.template_type = template_type;
-        rec.template_param_length = template_param_length;
-        rec.template_params = IOUtils.safelyAllocate(template_param_length, MAX_RECORD_LENGTH);
-        System.arraycopy(template_params, 0, rec.template_params, 0, template_param_length);
+        return copy();
+    }
 
-        if (color_gradient != null) {
-            rec.color_gradient = (ColorGradientFormatting)color_gradient.clone();
-        }
-        if (multistate != null) {
-            rec.multistate = (IconMultiStateFormatting)multistate.clone();
-        }
-        if (data_bar != null) {
-            rec.data_bar = (DataBarFormatting)data_bar.clone();
-        }
-        if (filter_data != null) {
-            rec.filter_data = IOUtils.safelyAllocate(filter_data.length, MAX_RECORD_LENGTH);
-            System.arraycopy(filter_data, 0, rec.filter_data, 0, filter_data.length);
-        }
-        
-        return rec;
+    @Override
+    public CFRule12Record copy() {
+        return new CFRule12Record(this);
     }
-    
+
     public short getFutureRecordType() {
         return futureHeader.getRecordType();
     }

src/java/org/apache/poi/hssf/record/CFRuleBase.java

@@ -30,32 +30,31 @@ import org.apache.poi.util.BitFieldFactory;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.POILogFactory;
 import org.apache.poi.util.POILogger;
+import org.apache.poi.util.Removal;
 
 /**
  * Conditional Formatting Rules. This can hold old-style rules
- *   
- * 
+ *
+ *
  * <p>This is for the older-style Excel conditional formattings,
  *  new-style (Excel 2007+) also make use of {@link CFRule12Record}
  *  for their rules.</p>
  */
-public abstract class CFRuleBase extends StandardRecord implements Cloneable {
+public abstract class CFRuleBase extends StandardRecord {
     // FIXME: Merge with org.apache.poi.ss.usermodel.ComparisonOperator and rewrite as an enum
-    public static final class ComparisonOperator {
-        public static final byte NO_COMPARISON = 0;
-        public static final byte BETWEEN       = 1;
-        public static final byte NOT_BETWEEN   = 2;
-        public static final byte EQUAL         = 3;
-        public static final byte NOT_EQUAL     = 4;
-        public static final byte GT            = 5;
-        public static final byte LT            = 6;
-        public static final byte GE            = 7;
-        public static final byte LE            = 8;
-        private static final byte max_operator = 8;
+    public interface ComparisonOperator {
+        byte NO_COMPARISON = 0;
+        byte BETWEEN       = 1;
+        byte NOT_BETWEEN   = 2;
+        byte EQUAL         = 3;
+        byte NOT_EQUAL     = 4;
+        byte GT            = 5;
+        byte LT            = 6;
+        byte GE            = 7;
+        byte LE            = 8;
+        byte max_operator  = 8;
     }
-    protected static final POILogger logger = POILogFactory.getLogger(CFRuleBase.class);
 
-    private byte condition_type;
     // The only kinds that CFRuleRecord handles
     public static final byte CONDITION_TYPE_CELL_VALUE_IS = 1;
     public static final byte CONDITION_TYPE_FORMULA = 2;
@@ -65,8 +64,6 @@ public abstract class CFRuleBase extends StandardRecord implements Cloneable {
     public static final byte CONDITION_TYPE_FILTER = 5;
     public static final byte CONDITION_TYPE_ICON_SET = 6;
 
-    private byte comparison_operator;
-
     public static final int TEMPLATE_CELL_VALUE = 0x0000;
     public static final int TEMPLATE_FORMULA = 0x0001;
     public static final int TEMPLATE_COLOR_SCALE_FORMATTING = 0x0002;
@@ -94,7 +91,9 @@ public abstract class CFRuleBase extends StandardRecord implements Cloneable {
     public static final int TEMPLATE_DUPLICATE_VALUES = 0x001B;
     public static final int TEMPLATE_ABOVE_OR_EQUAL_TO_AVERAGE = 0x001D;
     public static final int TEMPLATE_BELOW_OR_EQUAL_TO_AVERAGE = 0x001E;
-    
+
+    protected static final POILogger logger = POILogFactory.getLogger(CFRuleBase.class);
+
     static final BitField modificationBits = bf(0x003FFFFF); // Bits: font,align,bord,patt,prot
     static final BitField alignHor         = bf(0x00000001); // 0 = Horizontal alignment modified
     static final BitField alignVer         = bf(0x00000002); // 0 = Vertical alignment modified
@@ -129,19 +128,24 @@ public abstract class CFRuleBase extends StandardRecord implements Cloneable {
         return BitFieldFactory.getInstance(i);
     }
 
+
+    private byte condition_type;
+    private byte comparison_operator;
+
     protected int formatting_options;
-    protected short formatting_not_used; // TODO Decode this properly
+    // TODO Decode this properly
+    protected short formatting_not_used;
 
     protected FontFormatting _fontFormatting;
     protected BorderFormatting _borderFormatting;
     protected PatternFormatting _patternFormatting;
-    
+
     private Formula formula1;
     private Formula formula2;
 
     /**
      * Creates new CFRuleRecord
-     * 
+     *
      * @param conditionType the condition type
      * @param comparisonOperation the comparison operation
      */
@@ -151,19 +155,34 @@ public abstract class CFRuleBase extends StandardRecord implements Cloneable {
         formula1 = Formula.create(Ptg.EMPTY_PTG_ARRAY);
         formula2 = Formula.create(Ptg.EMPTY_PTG_ARRAY);
     }
+
     protected CFRuleBase(byte conditionType, byte comparisonOperation, Ptg[] formula1, Ptg[] formula2) {
         this(conditionType, comparisonOperation);
         this.formula1 = Formula.create(formula1);
         this.formula2 = Formula.create(formula2);
     }
+
     protected CFRuleBase() {}
-    
+
+    protected CFRuleBase(CFRuleBase other) {
+        super(other);
+        setConditionType(other.getConditionType());
+        setComparisonOperation(other.getComparisonOperation());
+        formatting_options = other.formatting_options;
+        formatting_not_used = other.formatting_not_used;
+        _fontFormatting = (!other.containsFontFormattingBlock()) ? null : other.getFontFormatting().copy();
+        _borderFormatting = (!other.containsBorderFormattingBlock()) ? null : other.getBorderFormatting().copy();
+        _patternFormatting = (!other.containsPatternFormattingBlock()) ? null : other.getPatternFormatting().copy();
+        formula1 = other.getFormula1().copy();
+        formula2 = other.getFormula2().copy();
+    }
+
     protected int readFormatOptions(RecordInputStream in) {
         formatting_options = in.readInt();
         formatting_not_used = in.readShort();
 
         int len = 6;
-        
+
         if (containsFontFormattingBlock()) {
             _fontFormatting = new FontFormatting(in);
             len += _fontFormatting.getDataLength();
@@ -178,7 +197,7 @@ public abstract class CFRuleBase extends StandardRecord implements Cloneable {
             _patternFormatting = new PatternFormatting(in);
             len += _patternFormatting.getDataLength();
         }
-        
+
         return len;
     }
 
@@ -187,10 +206,8 @@ public abstract class CFRuleBase extends StandardRecord implements Cloneable {
     }
     protected void setConditionType(byte condition_type) {
         if ((this instanceof CFRuleRecord)) {
-            if (condition_type == CONDITION_TYPE_CELL_VALUE_IS ||
-                condition_type == CONDITION_TYPE_FORMULA) {
-                // Good, valid combination
-            } else {
+            if (!(condition_type == CONDITION_TYPE_CELL_VALUE_IS ||
+                condition_type == CONDITION_TYPE_FORMULA)) {
                 throw new IllegalArgumentException("CFRuleRecord only accepts Value-Is and Formula types");
             }
         }
@@ -201,7 +218,7 @@ public abstract class CFRuleBase extends StandardRecord implements Cloneable {
         if (operation < 0 || operation > ComparisonOperator.max_operator)
             throw new IllegalArgumentException(
                     "Valid operators are only in the range 0 to " +ComparisonOperator.max_operator);
-        
+
         this.comparison_operator = operation;
     }
     public byte getComparisonOperation() {
@@ -351,7 +368,7 @@ public abstract class CFRuleBase extends StandardRecord implements Cloneable {
     private void setOptionFlag(boolean flag, BitField field) {
         formatting_options = field.setBoolean(formatting_options, flag);
     }
-    
+
     protected int getFormattingBlockSize() {
         return 6 +
           (containsFontFormattingBlock()?_fontFormatting.getRawRecord().length:0)+
@@ -375,7 +392,7 @@ public abstract class CFRuleBase extends StandardRecord implements Cloneable {
             _patternFormatting.serialize(out);
         }
     }
-    
+
     /**
      * get the stack of the 1st expression as a list
      *
@@ -440,27 +457,13 @@ public abstract class CFRuleBase extends StandardRecord implements Cloneable {
         int sheetIndex = sheet.getWorkbook().getSheetIndex(sheet);
         return HSSFFormulaParser.parse(formula, sheet.getWorkbook(), FormulaType.CELL, sheetIndex);
     }
-    
-    protected void copyTo(CFRuleBase rec) {
-        rec.condition_type = condition_type;
-        rec.comparison_operator = comparison_operator;
-        
-        rec.formatting_options = formatting_options;
-        rec.formatting_not_used = formatting_not_used;
-        if (containsFontFormattingBlock()) {
-            rec._fontFormatting = _fontFormatting.clone();
-        }
-        if (containsBorderFormattingBlock()) {
-            rec._borderFormatting = _borderFormatting.clone();
-        }
-        if (containsPatternFormattingBlock()) {
-            rec._patternFormatting = (PatternFormatting) _patternFormatting.clone();
-        }
-        
-        rec.setFormula1(getFormula1().copy());
-        rec.setFormula2(getFormula2().copy());
-    }
-    
+
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public abstract CFRuleBase clone();
+
+    @Override
+    public abstract CFRuleBase copy();
 }

src/java/org/apache/poi/hssf/record/CFRuleRecord.java

@@ -23,18 +23,22 @@ import org.apache.poi.hssf.usermodel.HSSFSheet;
 import org.apache.poi.ss.formula.Formula;
 import org.apache.poi.ss.formula.ptg.Ptg;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Conditional Formatting Rule Record (0x01B1). 
- * 
+ * Conditional Formatting Rule Record (0x01B1).
+ *
  * <p>This is for the older-style Excel conditional formattings,
  *  new-style (Excel 2007+) also make use of {@link CFRule12Record}
  *  for their rules.</p>
  */
-public final class CFRuleRecord extends CFRuleBase implements Cloneable {
+public final class CFRuleRecord extends CFRuleBase {
     public static final short sid = 0x01B1;
 
-    /** Creates new CFRuleRecord */
+    public CFRuleRecord(CFRuleRecord other) {
+        super(other);
+    }
+
     private CFRuleRecord(byte conditionType, byte comparisonOperation) {
         super(conditionType, comparisonOperation);
         setDefaults();
@@ -59,10 +63,10 @@ public final class CFRuleRecord extends CFRuleBase implements Cloneable {
 
     /**
      * Creates a new comparison operation rule
-     * 
+     *
      * @param sheet the sheet
      * @param formulaText the formula text
-     * 
+     *
      * @return a new comparison operation rule
      */
     public static CFRuleRecord create(HSSFSheet sheet, String formulaText) {
@@ -72,12 +76,12 @@ public final class CFRuleRecord extends CFRuleBase implements Cloneable {
     }
     /**
      * Creates a new comparison operation rule
-     * 
+     *
      * @param sheet the sheet
      * @param comparisonOperation the comparison operation
      * @param formulaText1 the first formula text
      * @param formulaText2 the second formula text
-     * 
+     *
      * @return a new comparison operation rule
      */
     public static CFRuleRecord create(HSSFSheet sheet, byte comparisonOperation,
@@ -120,7 +124,7 @@ public final class CFRuleRecord extends CFRuleBase implements Cloneable {
         out.writeByte(getComparisonOperation());
         out.writeShort(formula1Len);
         out.writeShort(formula2Len);
-        
+
         serializeFormattingBlock(out);
 
         getFormula1().serializeTokens(out);
@@ -156,9 +160,15 @@ public final class CFRuleRecord extends CFRuleBase implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public CFRuleRecord clone() {
-        CFRuleRecord rec = new CFRuleRecord(getConditionType(), getComparisonOperation());
-        super.copyTo(rec);
-        return rec;
+        return copy();
+    }
+
+    @Override
+    public CFRuleRecord copy() {
+        return new CFRuleRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/CRNCountRecord.java

@@ -19,30 +19,26 @@ package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
 /**
- * XCT - CRN Count <P>
- *
- * REFERENCE:  5.114<P>
- *
- * @author Josh Micich
+ * XCT - CRN Count
  */
 public final class CRNCountRecord extends StandardRecord {
-	public final static short sid = 0x59;
+	public static final short sid = 0x59;
 
 	private static final short DATA_SIZE = 4;
 
+	private int field_1_number_crn_records;
+	private int field_2_sheet_table_index;
 
-	private int	 field_1_number_crn_records;
-	private int	 field_2_sheet_table_index;
-
-	public CRNCountRecord() {
-		throw new RuntimeException("incomplete code");
+	private CRNCountRecord() {
+		// incomplete code
 	}
 
-	public int getNumberOfCRNs() {
-		return field_1_number_crn_records;
+	public CRNCountRecord(CRNCountRecord other) {
+		super(other);
+		field_1_number_crn_records = other.field_1_number_crn_records;
+		field_2_sheet_table_index = other.field_2_sheet_table_index;
 	}
 
-
 	public CRNCountRecord(RecordInputStream in) {
 		field_1_number_crn_records = in.readShort();
 		if(field_1_number_crn_records < 0) {
@@ -53,6 +49,9 @@ public final class CRNCountRecord extends StandardRecord {
 		field_2_sheet_table_index = in.readShort();
 	 }
 
+	public int getNumberOfCRNs() {
+		return field_1_number_crn_records;
+	}
 
 	public String toString() {
         StringBuilder sb = new StringBuilder();
@@ -77,4 +76,9 @@ public final class CRNCountRecord extends StandardRecord {
 	public short getSid() {
 		return sid;
 	}
+
+	@Override
+	public CRNCountRecord copy() {
+		return new CRNCountRecord(this);
+	}
 }

src/java/org/apache/poi/hssf/record/CRNRecord.java

@@ -21,27 +21,30 @@ import org.apache.poi.ss.formula.constant.ConstantValueParser;
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Title:       CRN(0x005A)<p>
- * Description: This record stores the contents of an external cell or cell range<p>
- * REFERENCE:   OOO 5.23
+ * This record stores the contents of an external cell or cell range
  */
 public final class CRNRecord extends StandardRecord {
-	public final static short sid = 0x005A;
+	public static final short sid = 0x005A;
 
-	private int	 field_1_last_column_index;
-	private int	 field_2_first_column_index;
-	private int	 field_3_row_index;
+	private int	field_1_last_column_index;
+	private int	field_2_first_column_index;
+	private int	field_3_row_index;
 	private Object[] field_4_constant_values;
 
-	public CRNRecord() {
-		throw new RuntimeException("incomplete code");
+	private CRNRecord() {
+		// incomplete code
 	}
 
-	public int getNumberOfCRNs() {
-		return field_1_last_column_index;
+	public CRNRecord(CRNRecord other) {
+		super(other);
+		field_1_last_column_index = other.field_1_last_column_index;
+		field_2_first_column_index = other.field_2_first_column_index;
+		field_3_row_index = other.field_3_row_index;
+		// field_4_constant_values are instances of Double, Boolean, String, ErrorCode,
+		// i.e. they are immutable and can their references can be simply cloned
+		field_4_constant_values = (other.field_4_constant_values == null) ? null : other.field_4_constant_values.clone();
 	}
 
-
 	public CRNRecord(RecordInputStream in) {
 		field_1_last_column_index = in.readUByte();
 		field_2_first_column_index = in.readUByte();
@@ -50,6 +53,9 @@ public final class CRNRecord extends StandardRecord {
 		field_4_constant_values = ConstantValueParser.parse(in, nValues);
 	}
 
+	public int getNumberOfCRNs() {
+		return field_1_last_column_index;
+	}
 
 	public String toString() {
 		StringBuilder sb = new StringBuilder();
@@ -77,4 +83,9 @@ public final class CRNRecord extends StandardRecord {
 	public short getSid() {
 		return sid;
 	}
+
+	@Override
+	public CRNRecord copy() {
+		return new CRNRecord(this);
+	}
 }

src/java/org/apache/poi/hssf/record/CalcCountRecord.java

@@ -15,34 +15,37 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Calc Count Record
- * Description:  Specifies the maximum times the gui should perform a formula
- *               recalculation.  For instance: in the case a formula includes
- *               cells that are themselves a result of a formula and a value
- *               changes.  This is essentially a failsafe against an infinate
- *               loop in the event the formulas are not independant. <P>
- * REFERENCE:  PG 292 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
+ * Specifies the maximum times the gui should perform a formula recalculation.
+ * For instance: in the case a formula includes cells that are themselves a result of a formula and
+ * a value changes.  This is essentially a failsafe against an infinite loop in the event the formulas
+ * are not independent.
+ *
  * @version 2.0-pre
- * @see org.apache.poi.hssf.record.CalcModeRecord
+ * @see CalcModeRecord
  */
 
-public final class CalcCountRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0xC;
-    private short             field_1_iterations;
+public final class CalcCountRecord extends StandardRecord {
+    public static final short sid = 0xC;
 
-    public CalcCountRecord()
-    {
+    private short field_1_iterations;
+
+    public CalcCountRecord() {}
+
+    public CalcCountRecord(CalcCountRecord other) {
+        super(other);
+        field_1_iterations = other.field_1_iterations;
     }
 
-    public CalcCountRecord(RecordInputStream in)
-    {
+
+    public CalcCountRecord(RecordInputStream in) {
         field_1_iterations = in.readShort();
     }
 
@@ -91,9 +94,15 @@ public final class CalcCountRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public CalcCountRecord clone() {
-      CalcCountRecord rec = new CalcCountRecord();
-      rec.field_1_iterations = field_1_iterations;
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public CalcCountRecord copy() {
+        return new CalcCountRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/CalcModeRecord.java

@@ -15,52 +15,42 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Calc Mode Record<P>
- * Description:  Tells the gui whether to calculate formulas
- *               automatically, manually or automatically
- *               except for tables.<P>
- * REFERENCE:  PG 292 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author Jason Height (jheight at chariot dot net dot au)
+ * Tells the gui whether to calculate formulas automatically, manually or automatically except for tables.
+ *
  * @version 2.0-pre
- * @see org.apache.poi.hssf.record.CalcCountRecord
+ * @see CalcCountRecord
  */
 
-public final class CalcModeRecord extends StandardRecord implements Cloneable {
-    public final static short sid                     = 0xD;
+public final class CalcModeRecord extends StandardRecord {
+    public static final short sid                     = 0xD;
 
-    /**
-     * manually calculate formulas (0)
-     */
+    /** manually calculate formulas (0) */
+    public static final short MANUAL                  = 0;
 
-    public final static short MANUAL                  = 0;
+    /** automatically calculate formulas (1) */
+    public static final short AUTOMATIC               = 1;
 
-    /**
-     * automatically calculate formulas (1)
-     */
+    /** automatically calculate formulas except for tables (-1) */
+    public static final short AUTOMATIC_EXCEPT_TABLES = -1;
 
-    public final static short AUTOMATIC               = 1;
+    private short field_1_calcmode;
 
-    /**
-     * automatically calculate formulas except for tables (-1)
-     */
+    public CalcModeRecord() {}
 
-    public final static short AUTOMATIC_EXCEPT_TABLES = -1;
-    private short             field_1_calcmode;
-
-    public CalcModeRecord()
-    {
+    public CalcModeRecord(CalcModeRecord other) {
+        super(other);
+        field_1_calcmode = other.field_1_calcmode;
     }
 
-    public CalcModeRecord(RecordInputStream in)
-    {
+    public CalcModeRecord(RecordInputStream in) {
         field_1_calcmode = in.readShort();
     }
 
@@ -119,9 +109,15 @@ public final class CalcModeRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public CalcModeRecord clone() {
-      CalcModeRecord rec = new CalcModeRecord();
-      rec.field_1_calcmode = field_1_calcmode;
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public CalcModeRecord copy() {
+        return new CalcModeRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/CellRecord.java

@@ -29,8 +29,13 @@ public abstract class CellRecord extends StandardRecord implements CellValueReco
     private int _columnIndex;
     private int _formatIndex;
 
-    protected CellRecord() {
-        // fields uninitialised
+    protected CellRecord() {}
+
+    protected CellRecord(CellRecord other) {
+        super(other);
+        _rowIndex = other.getRow();
+        _columnIndex = other.getColumn();
+        _formatIndex = other.getXFIndex();
     }
 
     protected CellRecord(RecordInputStream in) {
@@ -100,21 +105,21 @@ public abstract class CellRecord extends StandardRecord implements CellValueReco
      * Append specific debug info (used by {@link #toString()} for the value
      * contained in this record. Trailing new-line should not be appended
      * (superclass does that).
-     * 
+     *
      * @param sb the StringBuilder to write to
      */
     protected abstract void appendValueText(StringBuilder sb);
 
     /**
      * Gets the debug info BIFF record type name (used by {@link #toString()}.
-     * 
+     *
      * @return the record type name
      */
     protected abstract String getRecordName();
 
     /**
      * writes out the value data for this cell record
-     * 
+     *
      * @param out the output
      */
     protected abstract void serializeValue(LittleEndianOutput out);
@@ -137,9 +142,6 @@ public abstract class CellRecord extends StandardRecord implements CellValueReco
         return 6 + getValueDataSize();
     }
 
-    protected final void copyBaseFields(CellRecord rec) {
-        rec._rowIndex = _rowIndex;
-        rec._columnIndex = _columnIndex;
-        rec._formatIndex = _formatIndex;
-    }
+    @Override
+    public abstract CellRecord copy();
 }

src/java/org/apache/poi/hssf/record/CodepageRecord.java

@@ -15,7 +15,7 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
@@ -23,33 +23,33 @@ import org.apache.poi.util.CodePageUtil;
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Title: Codepage Record
- * <p>Description:  the default characterset. for the workbook</p>
- * <p>REFERENCE:  PG 293 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)</p>
- * <p>Use {@link CodePageUtil} to turn these values into Java code pages
- *  to encode/decode strings.</p>
+ * The default characterset. for the workbook<p>
+ *
+ * Use {@link CodePageUtil} to turn these values into Java code pages to encode/decode strings.
+ *
  * @version 2.0-pre
  */
 
-public final class CodepageRecord
-    extends StandardRecord
-{
-    public final static short sid = 0x42;
-    private short             field_1_codepage;   // = 0;
+public final class CodepageRecord extends StandardRecord {
+    public static final short sid = 0x42;
 
     /**
      * Excel 97+ (Biff 8) should always store strings as UTF-16LE or
      *  compressed versions of that. As such, this should always be
      *  0x4b0 = UTF_16, except for files coming from older versions.
      */
-    public final static short CODEPAGE = ( short ) 0x4b0;
+    public static final short CODEPAGE = ( short ) 0x4b0;
 
-    public CodepageRecord()
-    {
+    private short field_1_codepage;
+
+    public CodepageRecord() {}
+
+    public CodepageRecord(CodepageRecord other) {
+        super(other);
+        field_1_codepage = other.field_1_codepage;
     }
 
-    public CodepageRecord(RecordInputStream in)
-    {
+    public CodepageRecord(RecordInputStream in) {
         field_1_codepage = in.readShort();
     }
 
@@ -100,4 +100,9 @@ public final class CodepageRecord
     {
         return sid;
     }
+
+    @Override
+    public CodepageRecord copy() {
+        return new CodepageRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/ColumnInfoRecord.java

@@ -17,27 +17,27 @@
 
 package org.apache.poi.hssf.record;
 
-import org.apache.poi.util.HexDump;
-import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.BitField;
 import org.apache.poi.util.BitFieldFactory;
+import org.apache.poi.util.HexDump;
+import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title: COLINFO Record (0x007D)<p>
- * Description:  Defines with width and formatting for a range of columns<p>
- * REFERENCE:  PG 293 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
+ * Defines with width and formatting for a range of columns
  */
-public final class ColumnInfoRecord extends StandardRecord implements Cloneable {
+public final class ColumnInfoRecord extends StandardRecord {
     public static final short sid = 0x007D;
 
+    private static final BitField hidden    = BitFieldFactory.getInstance(0x01);
+    private static final BitField outlevel  = BitFieldFactory.getInstance(0x0700);
+    private static final BitField collapsed = BitFieldFactory.getInstance(0x1000);
+
     private int _firstCol;
     private int _lastCol;
     private int _colWidth;
     private int _xfIndex;
     private int _options;
-    private static final BitField hidden    = BitFieldFactory.getInstance(0x01);
-    private static final BitField outlevel  = BitFieldFactory.getInstance(0x0700);
-    private static final BitField collapsed = BitFieldFactory.getInstance(0x1000);
     // Excel seems write values 2, 10, and 260, even though spec says "must be zero"
     private int field_6_reserved;
 
@@ -51,6 +51,16 @@ public final class ColumnInfoRecord extends StandardRecord implements Cloneable
         field_6_reserved = 2; // seems to be the most common value
     }
 
+    public ColumnInfoRecord(ColumnInfoRecord other) {
+        super(other);
+        _firstCol = other._firstCol;
+        _lastCol = other._lastCol;
+        _colWidth = other._colWidth;
+        _xfIndex = other._xfIndex;
+        _options = other._options;
+        field_6_reserved = other.field_6_reserved;
+    }
+
     public ColumnInfoRecord(RecordInputStream in) {
         _firstCol = in.readUShort();
         _lastCol  = in.readUShort();
@@ -196,7 +206,7 @@ public final class ColumnInfoRecord extends StandardRecord implements Cloneable
 
     /**
      * @param other the format to match with
-     * 
+     *
      * @return {@code true} if the format, options and column width match
      */
     public boolean formatMatches(ColumnInfoRecord other) {
@@ -246,14 +256,15 @@ public final class ColumnInfoRecord extends StandardRecord implements Cloneable
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public ColumnInfoRecord clone() {
-        ColumnInfoRecord rec = new ColumnInfoRecord();
-        rec._firstCol = _firstCol;
-        rec._lastCol = _lastCol;
-        rec._colWidth = _colWidth;
-        rec._xfIndex = _xfIndex;
-        rec._options = _options;
-        rec.field_6_reserved = field_6_reserved;
-        return rec;
+        return copy();
+    }
+
+    @Override
+    public ColumnInfoRecord copy() {
+        return new ColumnInfoRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/CommonObjectDataSubRecord.java

@@ -23,50 +23,51 @@ import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianInput;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.RecordFormatException;
+import org.apache.poi.util.Removal;
 
 /**
  * The common object data record is used to store all common preferences for an excel object.
  */
-public final class CommonObjectDataSubRecord extends SubRecord implements Cloneable {
-    public final static short sid = 0x0015;
+public final class CommonObjectDataSubRecord extends SubRecord {
+    public static final short sid = 0x0015;
 
     private static final BitField locked    = BitFieldFactory.getInstance(0x0001);
     private static final BitField printable = BitFieldFactory.getInstance(0x0010);
     private static final BitField autofill  = BitFieldFactory.getInstance(0x2000);
     private static final BitField autoline  = BitFieldFactory.getInstance(0x4000);
 
-    public final static short OBJECT_TYPE_GROUP              = 0;
-    public final static short OBJECT_TYPE_LINE               = 1;
-    public final static short OBJECT_TYPE_RECTANGLE          = 2;
-    public final static short OBJECT_TYPE_OVAL               = 3;
-    public final static short OBJECT_TYPE_ARC                = 4;
-    public final static short OBJECT_TYPE_CHART              = 5;
-    public final static short OBJECT_TYPE_TEXT               = 6;
-    public final static short OBJECT_TYPE_BUTTON             = 7;
-    public final static short OBJECT_TYPE_PICTURE            = 8;
-    public final static short OBJECT_TYPE_POLYGON            = 9;
-    public final static short OBJECT_TYPE_RESERVED1          = 10;
-    public final static short OBJECT_TYPE_CHECKBOX           = 11;
-    public final static short OBJECT_TYPE_OPTION_BUTTON      = 12;
-    public final static short OBJECT_TYPE_EDIT_BOX           = 13;
-    public final static short OBJECT_TYPE_LABEL              = 14;
-    public final static short OBJECT_TYPE_DIALOG_BOX         = 15;
-    public final static short OBJECT_TYPE_SPINNER            = 16;
-    public final static short OBJECT_TYPE_SCROLL_BAR         = 17;
-    public final static short OBJECT_TYPE_LIST_BOX           = 18;
-    public final static short OBJECT_TYPE_GROUP_BOX          = 19;
-    public final static short OBJECT_TYPE_COMBO_BOX          = 20;
-    public final static short OBJECT_TYPE_RESERVED2          = 21;
-    public final static short OBJECT_TYPE_RESERVED3          = 22;
-    public final static short OBJECT_TYPE_RESERVED4          = 23;
-    public final static short OBJECT_TYPE_RESERVED5          = 24;
-    public final static short OBJECT_TYPE_COMMENT            = 25;
-    public final static short OBJECT_TYPE_RESERVED6          = 26;
-    public final static short OBJECT_TYPE_RESERVED7          = 27;
-    public final static short OBJECT_TYPE_RESERVED8          = 28;
-    public final static short OBJECT_TYPE_RESERVED9          = 29;
-    public final static short OBJECT_TYPE_MICROSOFT_OFFICE_DRAWING = 30;
-    
+    public static final short OBJECT_TYPE_GROUP              = 0;
+    public static final short OBJECT_TYPE_LINE               = 1;
+    public static final short OBJECT_TYPE_RECTANGLE          = 2;
+    public static final short OBJECT_TYPE_OVAL               = 3;
+    public static final short OBJECT_TYPE_ARC                = 4;
+    public static final short OBJECT_TYPE_CHART              = 5;
+    public static final short OBJECT_TYPE_TEXT               = 6;
+    public static final short OBJECT_TYPE_BUTTON             = 7;
+    public static final short OBJECT_TYPE_PICTURE            = 8;
+    public static final short OBJECT_TYPE_POLYGON            = 9;
+    public static final short OBJECT_TYPE_RESERVED1          = 10;
+    public static final short OBJECT_TYPE_CHECKBOX           = 11;
+    public static final short OBJECT_TYPE_OPTION_BUTTON      = 12;
+    public static final short OBJECT_TYPE_EDIT_BOX           = 13;
+    public static final short OBJECT_TYPE_LABEL              = 14;
+    public static final short OBJECT_TYPE_DIALOG_BOX         = 15;
+    public static final short OBJECT_TYPE_SPINNER            = 16;
+    public static final short OBJECT_TYPE_SCROLL_BAR         = 17;
+    public static final short OBJECT_TYPE_LIST_BOX           = 18;
+    public static final short OBJECT_TYPE_GROUP_BOX          = 19;
+    public static final short OBJECT_TYPE_COMBO_BOX          = 20;
+    public static final short OBJECT_TYPE_RESERVED2          = 21;
+    public static final short OBJECT_TYPE_RESERVED3          = 22;
+    public static final short OBJECT_TYPE_RESERVED4          = 23;
+    public static final short OBJECT_TYPE_RESERVED5          = 24;
+    public static final short OBJECT_TYPE_COMMENT            = 25;
+    public static final short OBJECT_TYPE_RESERVED6          = 26;
+    public static final short OBJECT_TYPE_RESERVED7          = 27;
+    public static final short OBJECT_TYPE_RESERVED8          = 28;
+    public static final short OBJECT_TYPE_RESERVED9          = 29;
+    public static final short OBJECT_TYPE_MICROSOFT_OFFICE_DRAWING = 30;
+
     private  short      field_1_objectType;
     private  int        field_2_objectId;
     private  short      field_3_option;
@@ -75,9 +76,16 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
     private  int        field_6_reserved3;
 
 
-    public CommonObjectDataSubRecord()
-    {
+    public CommonObjectDataSubRecord() {}
 
+    public CommonObjectDataSubRecord(CommonObjectDataSubRecord other) {
+        super(other);
+        field_1_objectType = other.field_1_objectType;
+        field_2_objectId = other.field_2_objectId;
+        field_3_option = other.field_3_option;
+        field_4_reserved1 = other.field_4_reserved1;
+        field_5_reserved2 = other.field_5_reserved2;
+        field_6_reserved3 = other.field_6_reserved3;
     }
 
     public CommonObjectDataSubRecord(LittleEndianInput in, int size) {
@@ -101,31 +109,31 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
         buffer.append("    .objectType           = ")
             .append("0x").append(HexDump.toHex(  getObjectType ()))
             .append(" (").append( getObjectType() ).append(" )");
-        buffer.append(System.getProperty("line.separator")); 
+        buffer.append(System.getProperty("line.separator"));
         buffer.append("    .objectId             = ")
             .append("0x").append(HexDump.toHex(  getObjectId ()))
             .append(" (").append( getObjectId() ).append(" )");
-        buffer.append(System.getProperty("line.separator")); 
+        buffer.append(System.getProperty("line.separator"));
         buffer.append("    .option               = ")
             .append("0x").append(HexDump.toHex(  getOption ()))
             .append(" (").append( getOption() ).append(" )");
-        buffer.append(System.getProperty("line.separator")); 
-        buffer.append("         .locked                   = ").append(isLocked()).append('\n'); 
-        buffer.append("         .printable                = ").append(isPrintable()).append('\n'); 
-        buffer.append("         .autofill                 = ").append(isAutofill()).append('\n'); 
-        buffer.append("         .autoline                 = ").append(isAutoline()).append('\n'); 
+        buffer.append(System.getProperty("line.separator"));
+        buffer.append("         .locked                   = ").append(isLocked()).append('\n');
+        buffer.append("         .printable                = ").append(isPrintable()).append('\n');
+        buffer.append("         .autofill                 = ").append(isAutofill()).append('\n');
+        buffer.append("         .autoline                 = ").append(isAutoline()).append('\n');
         buffer.append("    .reserved1            = ")
             .append("0x").append(HexDump.toHex(  getReserved1 ()))
             .append(" (").append( getReserved1() ).append(" )");
-        buffer.append(System.getProperty("line.separator")); 
+        buffer.append(System.getProperty("line.separator"));
         buffer.append("    .reserved2            = ")
             .append("0x").append(HexDump.toHex(  getReserved2 ()))
             .append(" (").append( getReserved2() ).append(" )");
-        buffer.append(System.getProperty("line.separator")); 
+        buffer.append(System.getProperty("line.separator"));
         buffer.append("    .reserved3            = ")
             .append("0x").append(HexDump.toHex(  getReserved3 ()))
             .append(" (").append( getReserved3() ).append(" )");
-        buffer.append(System.getProperty("line.separator")); 
+        buffer.append(System.getProperty("line.separator"));
 
         buffer.append("[/ftCmo]\n");
         return buffer.toString();
@@ -159,23 +167,23 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public CommonObjectDataSubRecord clone() {
-        CommonObjectDataSubRecord rec = new CommonObjectDataSubRecord();
-    
-        rec.field_1_objectType = field_1_objectType;
-        rec.field_2_objectId = field_2_objectId;
-        rec.field_3_option = field_3_option;
-        rec.field_4_reserved1 = field_4_reserved1;
-        rec.field_5_reserved2 = field_5_reserved2;
-        rec.field_6_reserved3 = field_6_reserved3;
-        return rec;
+        return copy();
+    }
+
+    @Override
+    public CommonObjectDataSubRecord copy() {
+        return new CommonObjectDataSubRecord(this);
     }
 
 
     /**
      * Get the object type field for the CommonObjectData record.
      *
-     * @return  One of 
+     * @return  One of
      *        OBJECT_TYPE_GROUP
      *        OBJECT_TYPE_LINE
      *        OBJECT_TYPE_RECTANGLE
@@ -217,7 +225,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
      * Set the object type field for the CommonObjectData record.
      *
      * @param field_1_objectType
-     *        One of 
+     *        One of
      *        OBJECT_TYPE_GROUP
      *        OBJECT_TYPE_LINE
      *        OBJECT_TYPE_RECTANGLE
@@ -257,7 +265,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
 
     /**
      * Get the object id field for the CommonObjectData record.
-     * 
+     *
      * @return the object id field
      */
     public int getObjectId()
@@ -267,7 +275,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
 
     /**
      * Set the object id field for the CommonObjectData record.
-     * 
+     *
      * @param field_2_objectId the object id field
      */
     public void setObjectId(int field_2_objectId)
@@ -277,7 +285,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
 
     /**
      * Get the option field for the CommonObjectData record.
-     * 
+     *
      * @return the option field
      */
     public short getOption()
@@ -287,7 +295,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
 
     /**
      * Set the option field for the CommonObjectData record.
-     * 
+     *
      * @param field_3_option the option field
      */
     public void setOption(short field_3_option)
@@ -297,7 +305,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
 
     /**
      * Get the reserved1 field for the CommonObjectData record.
-     * 
+     *
      * @return the reserved1 field
      */
     public int getReserved1()
@@ -307,7 +315,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
 
     /**
      * Set the reserved1 field for the CommonObjectData record.
-     * 
+     *
      * @param field_4_reserved1 the reserved1 field
      */
     public void setReserved1(int field_4_reserved1)
@@ -317,7 +325,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
 
     /**
      * Get the reserved2 field for the CommonObjectData record.
-     * 
+     *
      * @return the reserved2 field
      */
     public int getReserved2()
@@ -327,7 +335,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
 
     /**
      * Set the reserved2 field for the CommonObjectData record.
-     * 
+     *
      * @param field_5_reserved2 the reserved2 field
      */
     public void setReserved2(int field_5_reserved2)
@@ -337,7 +345,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
 
     /**
      * Get the reserved3 field for the CommonObjectData record.
-     * 
+     *
      * @return the reserved3 field
      */
     public int getReserved3()
@@ -347,7 +355,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
 
     /**
      * Set the reserved3 field for the CommonObjectData record.
-     * 
+     *
      * @param field_6_reserved3 the reserved3 field
      */
     public void setReserved3(int field_6_reserved3)
@@ -358,7 +366,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
     /**
      * Sets the locked field value.
      * true if object is locked when sheet has been protected
-     * 
+     *
      * @param value {@code true} if object is locked when sheet has been protected
      */
     public void setLocked(boolean value)
@@ -378,7 +386,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
     /**
      * Sets the printable field value.
      * object appears when printed
-     * 
+     *
      * @param value {@code true} if object appears when printed
      */
     public void setPrintable(boolean value)
@@ -398,7 +406,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
     /**
      * Sets the autofill field value.
      * whether object uses an automatic fill style
-     * 
+     *
      * @param value {@code true} if object uses an automatic fill style
      */
     public void setAutofill(boolean value)
@@ -418,7 +426,7 @@ public final class CommonObjectDataSubRecord extends SubRecord implements Clonea
     /**
      * Sets the autoline field value.
      * whether object uses an automatic line style
-     * 
+     *
      * @param value {@code true} if object uses an automatic line style
      */
     public void setAutoline(boolean value)

src/java/org/apache/poi/hssf/record/ContinueRecord.java

@@ -19,23 +19,26 @@ package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Continue Record(0x003C) - Helper class used primarily for SST Records <P>
- * Description:  handles overflow for prior record in the input
- *               stream; content is tailored to that prior record<P>
- * @author Marc Johnson (mjohnson at apache dot org)
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author Csaba Nagy (ncsaba at yahoo dot com)
+ * Helper class used primarily for SST Records<p>
+ *
+ * handles overflow for prior record in the input stream; content is tailored to that prior record
  */
-public final class ContinueRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x003C;
+public final class ContinueRecord extends StandardRecord {
+    public static final short sid = 0x003C;
     private byte[] _data;
 
     public ContinueRecord(byte[] data) {
         _data = data;
     }
 
+    public ContinueRecord(ContinueRecord other) {
+        super(other);
+        _data = (other._data == null) ? null : other._data.clone();
+    }
+
     protected int getDataSize() {
         return _data.length;
     }
@@ -70,7 +73,15 @@ public final class ContinueRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public ContinueRecord clone() {
-        return new ContinueRecord(_data);
+        return copy();
+    }
+
+    @Override
+    public ContinueRecord copy() {
+        return new ContinueRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/CountryRecord.java

@@ -15,37 +15,36 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Title:        Country Record (aka WIN.INI country)<P>
- * Description:  used for localization.  Currently HSSF always sets this to 1
- * and it seems to work fine even in Germany.  (es geht's auch fuer Deutschland)<P>
+ * Country Record (aka WIN.INI country) - used for localization<p>
+ *
+ * Currently HSSF always sets this to 1 and it seems to work fine even in Germany.
  *
- * REFERENCE:  PG 298 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
  * @version 2.0-pre
  */
 
-public final class CountryRecord
-    extends StandardRecord
-{
-    public final static short sid = 0x8c;
+public final class CountryRecord extends StandardRecord {
+    public static final short sid = 0x8c;
 
     // 1 for US
-    private short             field_1_default_country;
-    private short             field_2_current_country;
+    private short field_1_default_country;
+    private short field_2_current_country;
 
-    public CountryRecord()
-    {
+    public CountryRecord() {}
+
+    public CountryRecord(CountryRecord other) {
+        super(other);
+        field_1_default_country = other.field_1_default_country;
+        field_2_current_country = other.field_2_current_country;
     }
 
-    public CountryRecord(RecordInputStream in)
-    {
+    public CountryRecord(RecordInputStream in) {
         field_1_default_country = in.readShort();
         field_2_current_country = in.readShort();
     }
@@ -120,4 +119,9 @@ public final class CountryRecord
     {
         return sid;
     }
+
+    @Override
+    public CountryRecord copy() {
+        return new CountryRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/DBCellRecord.java

@@ -19,39 +19,15 @@ package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        DBCell Record (0x00D7)<p>
- * Description:  Used by Excel and other MS apps to quickly find rows in the sheets.<P>
- * REFERENCE:  PG 299/440 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
+ * Used by Excel and other MS apps to quickly find rows in the sheets.
  */
-public final class DBCellRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x00D7;
-    public final static int BLOCK_SIZE = 32;
-    
-    public static final class Builder {
-        private short[] _cellOffsets;
-        private int _nCellOffsets;
-        public Builder() {
-        	_cellOffsets = new short[4];
-		}
+public final class DBCellRecord extends StandardRecord {
+    public static final short sid = 0x00D7;
+    public static final int BLOCK_SIZE = 32;
 
-        public void addCellOffset(int cellRefOffset) {
-            if (_cellOffsets.length <= _nCellOffsets) {
-                short[] temp = new short[_nCellOffsets * 2];
-                System.arraycopy(_cellOffsets, 0, temp, 0, _nCellOffsets);
-                _cellOffsets = temp;
-            }
-            _cellOffsets[_nCellOffsets] = (short) cellRefOffset;
-            _nCellOffsets++;
-        }
-
-        public DBCellRecord build(int rowOffset) {
-            short[] cellOffsets = new short[_nCellOffsets];
-            System.arraycopy(_cellOffsets, 0, cellOffsets, 0, _nCellOffsets);
-            return new DBCellRecord(rowOffset, cellOffsets);
-        }
-    }
     /**
      * offset from the start of this DBCellRecord to the start of the first cell in
      * the next DBCell block.
@@ -59,23 +35,21 @@ public final class DBCellRecord extends StandardRecord implements Cloneable {
     private final int     field_1_row_offset;
     private final short[] field_2_cell_offsets;
 
-    DBCellRecord(int rowOffset, short[]cellOffsets) {
+    public DBCellRecord(int rowOffset, short[] cellOffsets) {
         field_1_row_offset = rowOffset;
         field_2_cell_offsets = cellOffsets;
     }
 
     public DBCellRecord(RecordInputStream in) {
         field_1_row_offset   = in.readUShort();
-        int size = in.remaining();        
+        int size = in.remaining();
         field_2_cell_offsets = new short[ size / 2 ];
 
-        for (int i=0;i<field_2_cell_offsets.length;i++)
-        {
+        for (int i=0;i<field_2_cell_offsets.length;i++) {
             field_2_cell_offsets[ i ] = in.readShort();
         }
     }
 
-
     public String toString() {
         StringBuilder buffer = new StringBuilder();
 
@@ -91,8 +65,8 @@ public final class DBCellRecord extends StandardRecord implements Cloneable {
 
     public void serialize(LittleEndianOutput out) {
         out.writeInt(field_1_row_offset);
-        for (int k = 0; k < field_2_cell_offsets.length; k++) {
-            out.writeShort(field_2_cell_offsets[ k ]);
+        for (short field_2_cell_offset : field_2_cell_offsets) {
+            out.writeShort(field_2_cell_offset);
         }
     }
     protected int getDataSize() {
@@ -104,7 +78,15 @@ public final class DBCellRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public DBCellRecord clone() {
+        return copy();
+    }
+
+    @Override
+    public DBCellRecord copy() {
         // safe because immutable
         return this;
     }

src/java/org/apache/poi/hssf/record/DConRefRecord.java

@@ -18,10 +18,10 @@
  */
 package org.apache.poi.hssf.record;
 
+import java.io.ByteArrayInputStream;
 import java.util.Arrays;
 
 import org.apache.poi.util.IOUtils;
-import org.apache.poi.util.LittleEndian;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.RecordFormatException;
 import org.apache.poi.util.StringUtil;
@@ -67,8 +67,7 @@ import org.apache.poi.util.StringUtil;
  *
  * At the moment this class is read-only.
  */
-public class DConRefRecord extends StandardRecord
-{
+public class DConRefRecord extends StandardRecord {
 
     //arbitrarily selected; may need to increase
     private static final int MAX_RECORD_LENGTH = 100_000;
@@ -108,54 +107,25 @@ public class DConRefRecord extends StandardRecord
      */
     private byte[] _unused;
 
+    public DConRefRecord(DConRefRecord other) {
+        super(other);
+        firstCol = other.firstCol;
+        firstRow = other.firstRow;
+        lastCol = other.lastCol;
+        lastRow = other.lastRow;
+        charCount = other.charCount;
+        charType = other.charType;
+        path = (other.path == null) ? null : other.path.clone();
+        _unused = (other._unused == null) ? null : other._unused.clone();
+    }
+
     /**
      * Read constructor.
      *
      * @param data byte array containing a DConRef Record, including the header.
      */
-    public DConRefRecord(byte[] data)
-    {
-        int offset = 0;
-        if (!(LittleEndian.getShort(data, offset) == DConRefRecord.sid))
-            throw new RecordFormatException("incompatible sid.");
-        offset += LittleEndian.SHORT_SIZE;
-
-        //length = LittleEndian.getShort(data, offset);
-        offset += LittleEndian.SHORT_SIZE;
-
-        firstRow = LittleEndian.getUShort(data, offset);
-        offset += LittleEndian.SHORT_SIZE;
-        lastRow = LittleEndian.getUShort(data, offset);
-        offset += LittleEndian.SHORT_SIZE;
-        firstCol = LittleEndian.getUByte(data, offset);
-        offset += LittleEndian.BYTE_SIZE;
-        lastCol = LittleEndian.getUByte(data, offset);
-        offset += LittleEndian.BYTE_SIZE;
-        charCount = LittleEndian.getUShort(data, offset);
-        offset += LittleEndian.SHORT_SIZE;
-        if (charCount < 2)
-            throw new RecordFormatException("Character count must be >= 2");
-
-        charType = LittleEndian.getUByte(data, offset);
-        offset += LittleEndian.BYTE_SIZE; //7 bits reserved + 1 bit type
-
-        /*
-         * bytelength is the length of the string in bytes, which depends on whether the string is
-         * made of single- or double-byte chars. This is given by charType, which equals 0 if
-         * single-byte, 1 if double-byte.
-         */
-        int byteLength = charCount * ((charType & 1) + 1);
-
-        path = LittleEndian.getByteArray(data, offset, byteLength, MAX_RECORD_LENGTH);
-        offset += byteLength;
-
-        /*
-         * If it's a self reference, the last one or two bytes (depending on char type) are the
-         * unused field. Not sure If i need to bother with this...
-         */
-        if (path[0] == 0x02)
-            _unused = LittleEndian.getByteArray(data, offset, (charType + 1), MAX_RECORD_LENGTH);
-
+    public DConRefRecord(byte[] data) {
+        this(bytesToRIStream(data));
     }
 
     /**
@@ -163,10 +133,10 @@ public class DConRefRecord extends StandardRecord
      *
      * @param inStream RecordInputStream containing a DConRefRecord structure.
      */
-    public DConRefRecord(RecordInputStream inStream)
-    {
-        if (inStream.getSid() != sid)
+    public DConRefRecord(RecordInputStream inStream) {
+        if (inStream.getSid() != sid) {
             throw new RecordFormatException("Wrong sid: " + inStream.getSid());
+        }
 
         firstRow = inStream.readUShort();
         lastRow = inStream.readUShort();
@@ -174,17 +144,23 @@ public class DConRefRecord extends StandardRecord
         lastCol = inStream.readUByte();
 
         charCount = inStream.readUShort();
-        charType = inStream.readUByte() & 0x01; //first bit only.
 
-        // byteLength depends on whether we are using single- or double-byte chars.
-        int byteLength = charCount * (charType + 1);
+        // 7 bits reserved + 1 bit type - first bit only
+        charType = inStream.readUByte() & 0x01;
+
+        // bytelength is the length of the string in bytes, which depends on whether the string is
+        // made of single- or double-byte chars. This is given by charType, which equals 0 if
+        // single-byte, 1 if double-byte.
+        final int byteLength = charCount * (charType + 1);
 
         path = IOUtils.safelyAllocate(byteLength, MAX_RECORD_LENGTH);
         inStream.readFully(path);
 
-        if (path[0] == 0x02)
+        // If it's a self reference, the last one or two bytes (depending on char type) are the
+        // unused field. Not sure If i need to bother with this...
+        if (path[0] == 0x02) {
             _unused = inStream.readRemainder();
-
+        }
     }
 
     /*
@@ -291,8 +267,7 @@ public class DConRefRecord extends StandardRecord
             //all of the path strings start with either 0x02 or 0x01 followed by zero or
             //more of 0x01..0x08
             int offset = 1;
-            while (path[offset] < 0x20 && offset < path.length)
-            {
+            while (offset < path.length && path[offset] < 0x20) {
                 offset++;
             }
             String out = new String(Arrays.copyOfRange(path, offset, path.length), StringUtil.UTF8);
@@ -310,8 +285,17 @@ public class DConRefRecord extends StandardRecord
      */
     public boolean isExternalRef()
     {
-        if (path[0] == 0x01)
-            return true;
-        return false;
+        return path[0] == 0x01;
+    }
+
+    @Override
+    public DConRefRecord copy() {
+        return new DConRefRecord(this);
+    }
+
+    private static RecordInputStream bytesToRIStream(byte[] data) {
+        RecordInputStream ric = new RecordInputStream(new ByteArrayInputStream(data));
+        ric.nextRecord();
+        return ric;
     }
 }

src/java/org/apache/poi/hssf/record/DSFRecord.java

@@ -23,21 +23,26 @@ import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Title: Double Stream Flag Record (0x0161)<p>
- * Description:  tells if this is a double stream file. (always no for HSSF generated files)<p>
- *               Double Stream files contain both BIFF8 and BIFF7 workbooks.<p>
- * REFERENCE:  PG 305 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
+ * Tells if this is a double stream file. (never applies to HSSF generated files)<p>
+ *
+ * Double Stream files contain both BIFF8 and BIFF7 workbooks.
  */
 public final class DSFRecord extends StandardRecord {
-    public final static short sid = 0x0161;
+    public static final short sid = 0x0161;
 
     private static final BitField biff5BookStreamFlag = BitFieldFactory.getInstance(0x0001);
 
     private int _options;
 
+    private DSFRecord(DSFRecord other) {
+        super(other);
+        _options = other._options;
+    }
+
     private DSFRecord(int options) {
         _options = options;
     }
+
     public DSFRecord(boolean isBiff5BookStreamPresent) {
         this(0);
         _options = biff5BookStreamFlag.setBoolean(0, isBiff5BookStreamPresent);
@@ -71,4 +76,9 @@ public final class DSFRecord extends StandardRecord {
     public short getSid() {
         return sid;
     }
+
+    @Override
+    public DSFRecord copy() {
+        return new DSFRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/DVALRecord.java

@@ -18,14 +18,13 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        DATAVALIDATIONS Record (0x01B2)<p>
- * Description:  used in data validation ;
- *               This record is the list header of all data validation records (0x01BE) in the current sheet.
+ * This record is the list header of all data validation records (0x01BE) in the current sheet.
  */
-public final class DVALRecord extends StandardRecord implements Cloneable {
-	public final static short sid = 0x01B2;
+public final class DVALRecord extends StandardRecord {
+	public static final short sid = 0x01B2;
 
 	/** Options of the DVAL */
 	private short field_1_options;
@@ -47,12 +46,21 @@ public final class DVALRecord extends StandardRecord implements Cloneable {
         field_5_dv_no = 0x00000000;
     }
 
+	public DVALRecord(DVALRecord other) {
+		super(other);
+		field_1_options = other.field_1_options;
+		field_2_horiz_pos = other.field_2_horiz_pos;
+		field_3_vert_pos = other.field_3_vert_pos;
+		field_cbo_id = other.field_cbo_id;
+		field_5_dv_no = other.field_5_dv_no;
+	}
+
 	public DVALRecord(RecordInputStream in) {
 		field_1_options = in.readShort();
 		field_2_horiz_pos = in.readInt();
 		field_3_vert_pos = in.readInt();
-        field_cbo_id    = in.readInt(); 
-        field_5_dv_no   = in.readInt();
+        field_cbo_id = in.readInt();
+        field_5_dv_no = in.readInt();
 	}
 
     /**
@@ -142,7 +150,6 @@ public final class DVALRecord extends StandardRecord implements Cloneable {
 	}
 
     public void serialize(LittleEndianOutput out) {
- 		
 		out.writeShort(getOptions());
 		out.writeInt(getHorizontalPos());
 		out.writeInt(getVerticalPos());
@@ -158,14 +165,16 @@ public final class DVALRecord extends StandardRecord implements Cloneable {
         return sid;
     }
 
-    @Override
-    public DVALRecord clone() {
-      DVALRecord rec = new DVALRecord();
-      rec.field_1_options = field_1_options;
-      rec.field_2_horiz_pos = field_2_horiz_pos;
-      rec.field_3_vert_pos = field_3_vert_pos;
-      rec.field_cbo_id = field_cbo_id;
-      rec.field_5_dv_no = field_5_dv_no;
-      return rec;
+	@Override
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
+	public DVALRecord clone() {
+		return copy();
+	}
+
+	@Override
+    public DVALRecord copy() {
+      return new DVALRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/DVRecord.java

@@ -25,64 +25,77 @@ import org.apache.poi.ss.util.CellRangeAddress;
 import org.apache.poi.ss.util.CellRangeAddressList;
 import org.apache.poi.util.BitField;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 import org.apache.poi.util.StringUtil;
 
 /**
- * Title:        DATAVALIDATION Record (0x01BE)<p>
- * Description:  This record stores data validation settings and a list of cell ranges
- *               which contain these settings. The data validation settings of a sheet
- *               are stored in a sequential list of DV records. This list is followed by
- *               DVAL record(s)
+ * This record stores data validation settings and a list of cell ranges which contain these settings.
+ * The data validation settings of a sheet are stored in a sequential list of DV records.
+ * This list is followed by DVAL record(s)
  */
-public final class DVRecord extends StandardRecord implements Cloneable {
-	public final static short sid = 0x01BE;
-	
+public final class DVRecord extends StandardRecord {
+	public static final short sid = 0x01BE;
+
 	/** the unicode string used for error/prompt title/text when not present */
 	private static final UnicodeString NULL_TEXT_STRING = new UnicodeString("\0");
 
+	/**
+	 * Option flags field
+	 *
+	 * @see HSSFDataValidation utility class
+	 */
+	private static final BitField opt_data_type                    = new BitField(0x0000000F);
+	private static final BitField opt_error_style                  = new BitField(0x00000070);
+	private static final BitField opt_string_list_formula          = new BitField(0x00000080);
+	private static final BitField opt_empty_cell_allowed           = new BitField(0x00000100);
+	private static final BitField opt_suppress_dropdown_arrow      = new BitField(0x00000200);
+	private static final BitField opt_show_prompt_on_cell_selected = new BitField(0x00040000);
+	private static final BitField opt_show_error_on_invalid_value  = new BitField(0x00080000);
+	private static final BitField opt_condition_operator           = new BitField(0x00700000);
+
 	/** Option flags */
 	private int _option_flags;
 	/** Title of the prompt box, cannot be longer than 32 chars */
-	private UnicodeString _promptTitle;
+	private final UnicodeString _promptTitle;
 	/** Title of the error box, cannot be longer than 32 chars */
-	private UnicodeString _errorTitle;
+	private final UnicodeString _errorTitle;
 	/** Text of the prompt box, cannot be longer than 255 chars */
-	private UnicodeString _promptText;
+	private final UnicodeString _promptText;
 	/** Text of the error box, cannot be longer than 255 chars */
-	private UnicodeString _errorText;
+	private final UnicodeString _errorText;
 	/** Not used - Excel seems to always write 0x3FE0 */
 	private short _not_used_1 = 0x3FE0;
 	/** Formula data for first condition (RPN token array without size field) */
-	private Formula _formula1;
+	private final Formula _formula1;
 	/** Not used - Excel seems to always write 0x0000 */
 	@SuppressWarnings("RedundantFieldInitialization")
 	private short _not_used_2 = 0x0000;
 	/** Formula data for second condition (RPN token array without size field) */
-	private Formula _formula2;
+	private final Formula _formula2;
 	/** Cell range address list with all affected ranges */
-	private CellRangeAddressList _regions;
-
-	/**
-	 * Option flags field
-	 * 
-	 * @see HSSFDataValidation utility class
-	 */
-	private static final BitField opt_data_type                    = new BitField(0x0000000F);
-	private static final BitField opt_error_style                  = new BitField(0x00000070);
-	private static final BitField opt_string_list_formula          = new BitField(0x00000080);
-	private static final BitField opt_empty_cell_allowed           = new BitField(0x00000100);
-	private static final BitField opt_suppress_dropdown_arrow      = new BitField(0x00000200);
-	private static final BitField opt_show_prompt_on_cell_selected = new BitField(0x00040000);
-	private static final BitField opt_show_error_on_invalid_value  = new BitField(0x00080000);
-	private static final BitField opt_condition_operator           = new BitField(0x00700000);
+	private final CellRangeAddressList _regions;
+
+	public DVRecord(DVRecord other) {
+		super(other);
+		_option_flags = other._option_flags;
+		_promptTitle = other._promptTitle.copy();
+		_errorTitle = other._errorTitle.copy();
+		_promptText = other._promptText.copy();
+		_errorText = other._errorText.copy();
+		_not_used_1 = other._not_used_1;
+		_formula1 = (other._formula1 == null) ? null : other._formula1.copy();
+		_not_used_2 = other._not_used_2;
+		_formula2 = (other._formula2 == null) ? null : other._formula2.copy();
+		_regions = (other._regions == null) ? null : other._regions.copy();
+	}
 
 	public DVRecord(int validationType, int operator, int errorStyle, boolean emptyCellAllowed,
 			boolean suppressDropDownArrow, boolean isExplicitList,
-			boolean showPromptBox, String promptTitle, String promptText, 
+			boolean showPromptBox, String promptTitle, String promptText,
 			boolean showErrorBox, String errorTitle, String errorText,
 			Ptg[] formula1, Ptg[] formula2,
 			CellRangeAddressList regions) {
-		
+
 		// check length-limits
 		if(promptTitle != null && promptTitle.length() > 32) {
 			throw new IllegalStateException("Prompt-title cannot be longer than 32 characters, but had: " + promptTitle);
@@ -118,7 +131,6 @@ public final class DVRecord extends StandardRecord implements Cloneable {
 	}
 
 	public DVRecord(RecordInputStream in) {
-
 		_option_flags = in.readInt();
 
 		_promptTitle = readUnicodeString(in);
@@ -144,7 +156,6 @@ public final class DVRecord extends StandardRecord implements Cloneable {
 		_regions = new CellRangeAddressList(in);
 	}
 
-	// --> start option flags
 	/**
 	 * @return the condition data type
 	 * @see org.apache.poi.ss.usermodel.DataValidationConstraint.ValidationType
@@ -276,7 +287,7 @@ public final class DVRecord extends StandardRecord implements Cloneable {
 
 	private static void appendFormula(StringBuilder sb, String label, Formula f) {
 		sb.append(label);
-		
+
 		if (f == null) {
 			sb.append("<empty>\n");
 			return;
@@ -291,7 +302,7 @@ public final class DVRecord extends StandardRecord implements Cloneable {
 	public void serialize(LittleEndianOutput out) {
 
 		out.writeInt(_option_flags);
-		
+
 		serializeUnicodeString(_promptTitle, out);
 		serializeUnicodeString(_errorTitle, out);
 		serializeUnicodeString(_promptText, out);
@@ -299,19 +310,19 @@ public final class DVRecord extends StandardRecord implements Cloneable {
 		out.writeShort(_formula1.getEncodedTokenSize());
 		out.writeShort(_not_used_1);
 		_formula1.serializeTokens(out);
-		
+
 		out.writeShort(_formula2.getEncodedTokenSize());
 		out.writeShort(_not_used_2);
 		_formula2.serializeTokens(out);
-		
+
 		_regions.serialize(out);
 	}
 
 	/**
 	 * When entered via the UI, Excel translates empty string into "\0"
 	 * While it is possible to encode the title/text as empty string (Excel doesn't exactly crash),
-	 * the resulting tool-tip text / message box looks wrong.  It is best to do the same as the 
-	 * Excel UI and encode 'not present' as "\0". 
+	 * the resulting tool-tip text / message box looks wrong.  It is best to do the same as the
+	 * Excel UI and encode 'not present' as "\0".
 	 */
 	private static UnicodeString resolveTitleText(String str) {
 		if (str == null || str.length() < 1) {
@@ -354,13 +365,18 @@ public final class DVRecord extends StandardRecord implements Cloneable {
 	public short getSid() {
 		return sid;
 	}
-	
-	/**
-	 * Clones the object. Uses serialisation, as the
-	 *  contents are somewhat complex
-	 */
+
 	@Override
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
 	public DVRecord clone() {
-		return (DVRecord)cloneViaReserialise();
+		return copy();
+	}
+
+	/** Clones the object. */
+	@Override
+	public DVRecord copy() {
+		return new DVRecord(this);
 	}
 }

src/java/org/apache/poi/hssf/record/DateWindow1904Record.java

@@ -15,33 +15,31 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Title:        Date Window 1904 Flag record <P>
- * Description:  Flag specifying whether 1904 date windowing is used.
- *               (tick toc tick toc...BOOM!) <P>
- * REFERENCE:  PG 280 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
+ * Flag specifying whether 1904 date windowing is used.
+ *
  * @version 2.0-pre
  */
 
-public final class DateWindow1904Record
-    extends StandardRecord
-{
-    public final static short sid = 0x22;
-    private short             field_1_window;
+public final class DateWindow1904Record extends StandardRecord {
+    public static final short sid = 0x22;
 
-    public DateWindow1904Record()
-    {
+    private short field_1_window;
+
+    public DateWindow1904Record() {}
+
+    public DateWindow1904Record(DateWindow1904Record other) {
+        super(other);
+        field_1_window = other.field_1_window;
     }
 
-    public DateWindow1904Record(RecordInputStream in)
-    {
+    public DateWindow1904Record(RecordInputStream in) {
         field_1_window = in.readShort();
     }
 
@@ -88,4 +86,9 @@ public final class DateWindow1904Record
     {
         return sid;
     }
+
+    @Override
+    public DateWindow1904Record copy() {
+        return new DateWindow1904Record(this);
+    }
 }

src/java/org/apache/poi/hssf/record/DefaultColWidthRecord.java

@@ -18,30 +18,32 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Default Column Width Record (0x0055) <P>
- * Description:  Specifies the default width for columns that have no specific
- *               width set.<P>
- * REFERENCE:  PG 302 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author Jason Height (jheight at chariot dot net dot au)
+ * Specifies the default width for columns that have no specific width set.
+ *
  * @version 2.0-pre
  */
-public final class DefaultColWidthRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x0055;
-    private int             field_1_col_width;
+public final class DefaultColWidthRecord extends StandardRecord {
+    public static final short sid = 0x0055;
 
     /**
      *  The default column width is 8 characters
      */
-    public final static int DEFAULT_COLUMN_WIDTH = 0x0008;
+    public static final int DEFAULT_COLUMN_WIDTH = 0x0008;
 
-    public DefaultColWidthRecord()
-    {
+    private int field_1_col_width;
+
+    public DefaultColWidthRecord() {
         field_1_col_width = DEFAULT_COLUMN_WIDTH;
     }
 
+    public DefaultColWidthRecord(DefaultColWidthRecord other) {
+        super(other);
+        field_1_col_width = other.field_1_col_width;
+    }
+
     public DefaultColWidthRecord(RecordInputStream in)
     {
         field_1_col_width = in.readUShort();
@@ -92,9 +94,15 @@ public final class DefaultColWidthRecord extends StandardRecord implements Clone
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public DefaultColWidthRecord clone() {
-      DefaultColWidthRecord rec = new DefaultColWidthRecord();
-      rec.field_1_col_width = field_1_col_width;
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public DefaultColWidthRecord copy() {
+      return new DefaultColWidthRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/DefaultRowHeightRecord.java

@@ -1,4 +1,3 @@
-
 /* ====================================================================
    Licensed to the Apache Software Foundation (ASF) under one or more
    contributor license agreements.  See the NOTICE file distributed with
@@ -20,35 +19,35 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Default Row Height Record
- * Description:  Row height for rows with undefined or not explicitly defined
- *               heights.
- * REFERENCE:  PG 301 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author Jason Height (jheight at chariot dot net dot au)
+ * Row height for rows with undefined or not explicitly defined heights.
+ *
  * @version 2.0-pre
  */
 
-public final class DefaultRowHeightRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x225;
-    private short             field_1_option_flags;
-    private short             field_2_row_height;
+public final class DefaultRowHeightRecord extends StandardRecord {
+    public static final short sid = 0x225;
 
-    /**
-     * The default row height for empty rows is 255 twips (255 / 20 == 12.75 points)
-     */
+    /** The default row height for empty rows is 255 twips (255 / 20 == 12.75 points) */
     public static final short DEFAULT_ROW_HEIGHT = 0xFF;
 
-    public DefaultRowHeightRecord()
-    {
+    private short field_1_option_flags;
+    private short field_2_row_height;
+
+    public DefaultRowHeightRecord() {
         field_1_option_flags = 0x0000;
         field_2_row_height = DEFAULT_ROW_HEIGHT;
     }
 
-    public DefaultRowHeightRecord(RecordInputStream in)
-    {
+    public DefaultRowHeightRecord(DefaultRowHeightRecord other) {
+        super(other);
+        field_1_option_flags = other.field_1_option_flags;
+        field_2_row_height = other.field_2_row_height;
+    }
+
+    public DefaultRowHeightRecord(RecordInputStream in) {
         field_1_option_flags = in.readShort();
         field_2_row_height   = in.readShort();
     }
@@ -121,10 +120,15 @@ public final class DefaultRowHeightRecord extends StandardRecord implements Clon
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public DefaultRowHeightRecord clone() {
-      DefaultRowHeightRecord rec = new DefaultRowHeightRecord();
-      rec.field_1_option_flags = field_1_option_flags;
-      rec.field_2_row_height = field_2_row_height;
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public DefaultRowHeightRecord copy() {
+      return new DefaultRowHeightRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/DeltaRecord.java

@@ -18,15 +18,12 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
-/**
- * Title:        Delta Record (0x0010)<p>
- * Description:  controls the accuracy of the calculations<p>
- * REFERENCE:  PG 303 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
- */
-public final class DeltaRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x0010;
-    public final static double DEFAULT_VALUE = 0.0010;   // should be .001
+/** Controls the accuracy of the calculations */
+public final class DeltaRecord extends StandardRecord {
+    public static final short sid = 0x0010;
+    public static final double DEFAULT_VALUE = 0.0010;
 
     // a double is an IEEE 8-byte float...damn IEEE and their goofy standards an
     // ambiguous numeric identifiers
@@ -36,6 +33,11 @@ public final class DeltaRecord extends StandardRecord implements Cloneable {
         field_1_max_change = maxChange;
     }
 
+    public DeltaRecord(DeltaRecord other) {
+        super(other);
+        field_1_max_change = other.field_1_max_change;
+    }
+
     public DeltaRecord(RecordInputStream in) {
         field_1_max_change = in.readDouble();
     }
@@ -70,7 +72,15 @@ public final class DeltaRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public DeltaRecord clone() {
+        return copy();
+    }
+
+    @Override
+    public DeltaRecord copy() {
         // immutable
         return this;
     }

src/java/org/apache/poi/hssf/record/DimensionsRecord.java

@@ -15,41 +15,44 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.POILogFactory;
 import org.apache.poi.util.POILogger;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Dimensions Record<P>
- * Description:  provides the minumum and maximum bounds
- *               of a sheet.<P>
- * REFERENCE:  PG 303 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author Jason Height (jheight at chariot dot net dot au)
+ * Provides the minumum and maximum bounds of a sheet.
+ *
  * @version 2.0-pre
  */
 
-public final class DimensionsRecord extends StandardRecord implements Cloneable {
+public final class DimensionsRecord extends StandardRecord {
 
     private static final POILogger logger = POILogFactory.getLogger(DimensionsRecord.class);
 
-    public final static short sid = 0x200;
+    public static final short sid = 0x200;
     private int               field_1_first_row;
     private int               field_2_last_row;   // plus 1
     private short             field_3_first_col;
     private short             field_4_last_col;
     private short             field_5_zero;       // must be 0 (reserved)
 
-    public DimensionsRecord()
-    {
+    public DimensionsRecord() {}
+
+    public DimensionsRecord(DimensionsRecord other) {
+        super(other);
+        field_1_first_row = other.field_1_first_row;
+        field_2_last_row  = other.field_2_last_row;
+        field_3_first_col = other.field_3_first_col;
+        field_4_last_col  = other.field_4_last_col;
+        field_5_zero      = other.field_5_zero;
     }
 
-    public DimensionsRecord(RecordInputStream in)
-    {
+    public DimensionsRecord(RecordInputStream in) {
         field_1_first_row = in.readInt();
         field_2_last_row  = in.readInt();
         field_3_first_col = in.readShort();
@@ -179,13 +182,15 @@ public final class DimensionsRecord extends StandardRecord implements Cloneable
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public DimensionsRecord clone() {
-      DimensionsRecord rec = new DimensionsRecord();
-      rec.field_1_first_row = field_1_first_row;
-      rec.field_2_last_row = field_2_last_row;
-      rec.field_3_first_col = field_3_first_col;
-      rec.field_4_last_col = field_4_last_col;
-      rec.field_5_zero = field_5_zero;
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public DimensionsRecord copy() {
+      return new DimensionsRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/DrawingGroupRecord.java

@@ -17,13 +17,13 @@
 
 package org.apache.poi.hssf.record;
 
+import java.util.Iterator;
+import java.util.List;
+
 import org.apache.poi.ddf.EscherRecord;
 import org.apache.poi.ddf.NullEscherSerializationListener;
 import org.apache.poi.util.LittleEndian;
 
-import java.util.Iterator;
-import java.util.List;
-
 
 public final class DrawingGroupRecord extends AbstractEscherHolderRecord {
     public static final short sid = 0xEB;
@@ -31,12 +31,13 @@ public final class DrawingGroupRecord extends AbstractEscherHolderRecord {
     static final int MAX_RECORD_SIZE = 8228;
     private static final int MAX_DATA_SIZE = MAX_RECORD_SIZE - 4;
 
-    public DrawingGroupRecord()
-    {
+    public DrawingGroupRecord() {}
+
+    public DrawingGroupRecord(DrawingGroupRecord other) {
+        super(other);
     }
 
-    public DrawingGroupRecord( RecordInputStream in )
-    {
+    public DrawingGroupRecord( RecordInputStream in ) {
         super( in );
     }
 
@@ -136,4 +137,9 @@ public final class DrawingGroupRecord extends AbstractEscherHolderRecord {
         LittleEndian.putShort(data, 0 + offset, ContinueRecord.sid);
         LittleEndian.putShort(data, 2 + offset, (short) sizeExcludingHeader);
     }
+
+    @Override
+    public DrawingGroupRecord copy() {
+        return new DrawingGroupRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/DrawingRecord.java

@@ -18,10 +18,9 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
-/**
- * DrawingRecord (0x00EC)
- */
-public final class DrawingRecord extends StandardRecord implements Cloneable {
+import org.apache.poi.util.Removal;
+
+public final class DrawingRecord extends StandardRecord {
     public static final short sid = 0x00EC;
 
     private static final byte[] EMPTY_BYTE_ARRAY = {};
@@ -33,6 +32,13 @@ public final class DrawingRecord extends StandardRecord implements Cloneable {
         recordData = EMPTY_BYTE_ARRAY;
     }
 
+    public DrawingRecord(DrawingRecord other) {
+        super(other);
+        recordData = (other.recordData == null) ? null : other.recordData.clone();
+        // TODO - this code probably never copies a contd array ...
+        contd = (other.contd == null) ? null : other.contd.clone();
+    }
+
     public DrawingRecord(RecordInputStream in) {
         recordData = in.readRemainder();
     }
@@ -69,20 +75,21 @@ public final class DrawingRecord extends StandardRecord implements Cloneable {
         recordData = thedata;
     }
 
+    @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
+    public DrawingRecord clone() {
+        return copy();
+    }
+
     /**
      * Cloning of drawing records must be executed through HSSFPatriarch, because all id's must be changed
      * @return cloned drawing records
      */
     @Override
-    public DrawingRecord clone() {
-        DrawingRecord rec = new DrawingRecord();
-        rec.recordData = recordData.clone();
-        if (contd != null) {
-            // TODO - this code probably never executes
-            rec.contd = contd.clone();
-        }
-
-        return rec;
+    public DrawingRecord copy() {
+        return new DrawingRecord(this);
     }
 
     @Override

src/java/org/apache/poi/hssf/record/DrawingRecordForBiffViewer.java

@@ -26,8 +26,10 @@ import java.io.ByteArrayInputStream;
 public final class DrawingRecordForBiffViewer extends AbstractEscherHolderRecord {
     public static final short sid = 0xEC;
 
-    public DrawingRecordForBiffViewer()
-    {
+    public DrawingRecordForBiffViewer() {}
+
+    public DrawingRecordForBiffViewer(DrawingRecordForBiffViewer other) {
+        super(other);
     }
 
     public DrawingRecordForBiffViewer( RecordInputStream in)
@@ -59,4 +61,9 @@ public final class DrawingRecordForBiffViewer extends AbstractEscherHolderRecord
     {
         return sid;
     }
+
+    @Override
+    public DrawingRecordForBiffViewer copy() {
+        return new DrawingRecordForBiffViewer(this);
+    }
 }

src/java/org/apache/poi/hssf/record/DrawingSelectionRecord.java

@@ -20,13 +20,14 @@ package org.apache.poi.hssf.record;
 import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianInput;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
  * MsoDrawingSelection (0x00ED)<p>
  * Reference:
  * [MS-OGRAPH].pdf sec 2.4.69
  */
-public final class DrawingSelectionRecord extends StandardRecord implements Cloneable {
+public final class DrawingSelectionRecord extends StandardRecord {
 	public static final short sid = 0x00ED;
 
 	/**
@@ -44,6 +45,12 @@ public final class DrawingSelectionRecord extends StandardRecord implements Clon
 		private final int _type;
 		private final int _length;
 
+		public OfficeArtRecordHeader(OfficeArtRecordHeader other) {
+			_verAndInstance = other._verAndInstance;
+			_type = other._type;
+			_length = other._length;
+		}
+
 		public OfficeArtRecordHeader(LittleEndianInput in) {
 			_verAndInstance = in.readUShort();
 			_type = in.readUShort();
@@ -57,11 +64,10 @@ public final class DrawingSelectionRecord extends StandardRecord implements Clon
 		}
 
 		public String debugFormatAsString() {
-			StringBuilder sb = new StringBuilder(32);
-			sb.append("ver+inst=").append(HexDump.shortToHex(_verAndInstance));
-			sb.append(" type=").append(HexDump.shortToHex(_type));
-			sb.append(" len=").append(HexDump.intToHex(_length));
-			return sb.toString();
+			return
+				"ver+inst=" + HexDump.shortToHex(_verAndInstance) +
+				" type=" + HexDump.shortToHex(_type) +
+				" len=" + HexDump.intToHex(_length);
 		}
 	}
 
@@ -93,7 +99,7 @@ public final class DrawingSelectionRecord extends StandardRecord implements Clon
 	}
 
 	protected int getDataSize() {
-		return OfficeArtRecordHeader.ENCODED_SIZE 
+		return OfficeArtRecordHeader.ENCODED_SIZE
 			+ 12 // 3 int fields
 			+ _shapeIds.length * 4;
 	}
@@ -109,7 +115,15 @@ public final class DrawingSelectionRecord extends StandardRecord implements Clon
 	}
 
 	@Override
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
 	public DrawingSelectionRecord clone() {
+		return copy();
+	}
+
+	@Override
+	public DrawingSelectionRecord copy() {
 		// currently immutable
 		return this;
 	}

src/java/org/apache/poi/hssf/record/EOFRecord.java

@@ -18,33 +18,25 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * End Of File record.
- * <P>
- * Description:  Marks the end of records belonging to a particular object in the
- *               HSSF File<P>
- * REFERENCE:  PG 307 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author Jason Height (jheight at chariot dot net dot au)
+ * Marks the end of records belonging to a particular object in the HSSF File
+ *
  * @version 2.0-pre
  */
-public final class EOFRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x0A;
+public final class EOFRecord extends StandardRecord {
+    public static final short sid = 0x0A;
 	public static final int ENCODED_SIZE = 4;
 
 	public static final EOFRecord instance = new EOFRecord();
-	
-    private EOFRecord() {
-    	// no data fields
-    }
+
+    private EOFRecord() {}
 
     /**
      * @param in unused (since this record has no data)
      */
-    public EOFRecord(RecordInputStream in)
-    {
-    }
+    public EOFRecord(RecordInputStream in) {}
 
     public String toString()
     {
@@ -68,7 +60,15 @@ public final class EOFRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public EOFRecord clone() {
+        return copy();
+    }
+
+    @Override
+    public EOFRecord copy() {
       return instance;
     }
 }

src/java/org/apache/poi/hssf/record/EmbeddedObjectRefSubRecord.java

@@ -33,6 +33,7 @@ import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.POILogFactory;
 import org.apache.poi.util.POILogger;
 import org.apache.poi.util.RecordFormatException;
+import org.apache.poi.util.Removal;
 import org.apache.poi.util.StringUtil;
 
 /**
@@ -40,7 +41,7 @@ import org.apache.poi.util.StringUtil;
  * A sub-record within the OBJ record which stores a reference to an object
  * stored in a separate entry within the OLE2 compound file.
  */
-public final class EmbeddedObjectRefSubRecord extends SubRecord implements Cloneable {
+public final class EmbeddedObjectRefSubRecord extends SubRecord {
 	private static POILogger logger = POILogFactory.getLogger(EmbeddedObjectRefSubRecord.class);
 	//arbitrarily selected; may need to increase
 	private static final int MAX_RECORD_LENGTH = 100_000;
@@ -73,8 +74,16 @@ public final class EmbeddedObjectRefSubRecord extends SubRecord implements Clone
 		field_4_ole_classname = null;
 	}
 
-	public short getSid() {
-		return sid;
+	public EmbeddedObjectRefSubRecord(EmbeddedObjectRefSubRecord other) {
+		super(other);
+		field_1_unknown_int = other.field_1_unknown_int;
+		field_2_refPtg = (other.field_2_refPtg == null) ? null : other.field_2_refPtg.copy();
+		field_2_unknownFormulaData = (other.field_2_unknownFormulaData == null) ? null : other.field_2_unknownFormulaData.clone();
+		field_3_unicode_flag = other.field_3_unicode_flag;
+		field_4_ole_classname = other.field_4_ole_classname;
+		field_4_unknownByte = other.field_4_unknownByte;
+		field_5_stream_id = other.field_5_stream_id;
+		field_6_unknown = (other.field_6_unknown == null) ? null : other.field_6_unknown.clone();
 	}
 
 	public EmbeddedObjectRefSubRecord(LittleEndianInput in, int size) {
@@ -158,6 +167,10 @@ public final class EmbeddedObjectRefSubRecord extends SubRecord implements Clone
 		field_6_unknown = readRawData(in, remaining);
 	}
 
+	public short getSid() {
+		return sid;
+	}
+
 	private static Ptg readRefPtg(byte[] formulaRawBytes) {
 		LittleEndianInput in = new LittleEndianInputStream(new ByteArrayInputStream(formulaRawBytes));
 		byte ptgSid = in.readByte();
@@ -310,8 +323,16 @@ public final class EmbeddedObjectRefSubRecord extends SubRecord implements Clone
 	}
 
 	@Override
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
 	public EmbeddedObjectRefSubRecord clone() {
-		return this; // TODO proper clone
+		return copy();
+	}
+
+	@Override
+	public EmbeddedObjectRefSubRecord copy() {
+		return new EmbeddedObjectRefSubRecord(this);
 	}
 
 	public String toString() {
@@ -339,15 +360,15 @@ public final class EmbeddedObjectRefSubRecord extends SubRecord implements Clone
 		sb.append("[/ftPictFmla]");
 		return sb.toString();
 	}
-	
+
 	public void setUnknownFormulaData(byte[] formularData) {
 		field_2_unknownFormulaData = formularData;
 	}
-	
+
 	public void setOleClassname(String oleClassname) {
 		field_4_ole_classname = oleClassname;
 	}
-	
+
 	public void setStorageId(int storageId) {
 		field_5_stream_id = storageId;
 	}

src/java/org/apache/poi/hssf/record/EndSubRecord.java

@@ -14,27 +14,25 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianInput;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.RecordFormatException;
+import org.apache.poi.util.Removal;
 
 /**
  * ftEnd (0x0000)<p>
- * 
+ *
  * The end data record is used to denote the end of the subrecords.
  */
-public final class EndSubRecord extends SubRecord implements Cloneable {
+public final class EndSubRecord extends SubRecord {
     // Note - zero sid is somewhat unusual (compared to plain Records)
-    public final static short sid = 0x0000;
+    public static final short sid = 0x0000;
     private static final int ENCODED_SIZE = 0;
 
-    public EndSubRecord()
-    {
-
-    }
+    public EndSubRecord() {}
 
     /**
      * @param in unused (since this record has no data)
@@ -76,8 +74,15 @@ public final class EndSubRecord extends SubRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public EndSubRecord clone() {
+        return copy();
+    }
 
+    @Override
+    public EndSubRecord copy() {
         return new EndSubRecord();
     }
 }

src/java/org/apache/poi/hssf/record/EscherAggregate.java

@@ -85,7 +85,7 @@ import org.apache.poi.util.RecordFormatException;
 
 public final class EscherAggregate extends AbstractEscherHolderRecord {
     public static final short sid = 9876; // not a real sid - dummy value
-    private static POILogger log = POILogFactory.getLogger(EscherAggregate.class);
+    private static final POILogger log = POILogFactory.getLogger(EscherAggregate.class);
     //arbitrarily selected; may need to increase
     private static final int MAX_RECORD_LENGTH = 100_000_000;
 
@@ -317,6 +317,13 @@ public final class EscherAggregate extends AbstractEscherHolderRecord {
         }
     }
 
+    public EscherAggregate(EscherAggregate other) {
+        super(other);
+        // shallow copy, because the aggregates doesn't own the records
+        shapeToObj.putAll(other.shapeToObj);
+        tailRec.putAll(other.tailRec);
+    }
+
     /**
      * @return Returns the current sid.
      */
@@ -814,4 +821,9 @@ public final class EscherAggregate extends AbstractEscherHolderRecord {
     public void removeTailRecord(NoteRecord note) {
         tailRec.remove(note.getShapeId());
     }
+
+    @Override
+    public EscherAggregate copy() {
+        return new EscherAggregate(this);
+    }
 }

src/java/org/apache/poi/hssf/record/ExtSSTRecord.java

@@ -17,28 +17,27 @@
 
 package org.apache.poi.hssf.record;
 
+import java.util.ArrayList;
+import java.util.stream.Stream;
+
 import org.apache.poi.hssf.record.cont.ContinuableRecord;
 import org.apache.poi.hssf.record.cont.ContinuableRecordOutput;
 import org.apache.poi.util.LittleEndianOutput;
 
-import java.util.ArrayList;
-
 /**
- * Title:        Extended Static String Table (0x00FF)<p>
- * Description: This record is used for a quick lookup into the SST record. This
- *              record breaks the SST table into a set of buckets. The offsets
- *              to these buckets within the SST record are kept as well as the
- *              position relative to the start of the SST record.<p>
- * REFERENCE:  PG 313 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
+ * Extended Static String Table (0x00FF)<p>
+ * This record is used for a quick lookup into the SST record. This record breaks the SST table
+ * into a set of buckets. The offsets to these buckets within the SST record are kept as well as
+ * the position relative to the start of the SST record.
  */
 public final class ExtSSTRecord extends ContinuableRecord {
-    public final static short sid = 0x00FF;
+    public static final short sid = 0x00FF;
     public static final int DEFAULT_BUCKET_SIZE = 8;
     //Can't seem to find this documented but from the biffviewer it is clear that
     //Excel only records the indexes for the first 128 buckets.
     public static final int MAX_BUCKETS = 128;
-    
-    
+
+
     public static final class InfoSubRecord {
     	public static final int ENCODED_SIZE = 8;
         private int field_1_stream_pos;          // stream pointer to the SST record
@@ -48,7 +47,7 @@ public final class ExtSSTRecord extends ContinuableRecord {
 
         /**
          * Creates new ExtSSTInfoSubRecord
-         * 
+         *
          * @param streamPos stream pointer to the SST record
          * @param bucketSstOffset ... don't really understand this yet
          */
@@ -57,6 +56,12 @@ public final class ExtSSTRecord extends ContinuableRecord {
             field_2_bucket_sst_offset = bucketSstOffset;
         }
 
+        public InfoSubRecord(InfoSubRecord other) {
+            field_1_stream_pos        = other.field_1_stream_pos;
+            field_2_bucket_sst_offset = other.field_2_bucket_sst_offset;
+            field_3_zero              = other.field_3_zero;
+        }
+
         public InfoSubRecord(RecordInputStream in)
         {
             field_1_stream_pos        = in.readInt();
@@ -78,8 +83,8 @@ public final class ExtSSTRecord extends ContinuableRecord {
             out.writeShort(field_3_zero);
         }
     }
-    
-    
+
+
     private short _stringsPerBucket;
     private InfoSubRecord[] _sstInfos;
 
@@ -89,6 +94,12 @@ public final class ExtSSTRecord extends ContinuableRecord {
         _sstInfos = new InfoSubRecord[0];
     }
 
+    public ExtSSTRecord(ExtSSTRecord other) {
+        _stringsPerBucket = other._stringsPerBucket;
+        _sstInfos = (other._sstInfos == null) ? null
+            : Stream.of(other._sstInfos).map(InfoSubRecord::new).toArray(InfoSubRecord[]::new);
+    }
+
     public ExtSSTRecord(RecordInputStream in) {
         _stringsPerBucket = in.readShort();
 
@@ -161,9 +172,9 @@ public final class ExtSSTRecord extends ContinuableRecord {
 
     /**
      * Given a number of strings (in the sst), returns the size of the extsst record
-     * 
+     *
      * @param numStrings the number of strings
-     * 
+     *
      * @return the size of the extsst record
      */
     public static int getRecordSizeForStrings(int numStrings) {
@@ -181,4 +192,9 @@ public final class ExtSSTRecord extends ContinuableRecord {
             _sstInfos[i] = new InfoSubRecord(bucketAbsoluteOffsets[i], bucketRelativeOffsets[i]);
         }
     }
+
+    @Override
+    public ExtSSTRecord copy() {
+        return new ExtSSTRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/ExtendedFormatRecord.java

@@ -14,7 +14,7 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
@@ -23,179 +23,164 @@ import org.apache.poi.util.BitFieldFactory;
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Title:        Extended Format Record
- * Description:  Probably one of the more complex records.  There are two breeds:
- *               Style and Cell.
- *<P>
- *               It should be noted that fields in the extended format record are
- *               somewhat arbitrary.  Almost all of the fields are bit-level, but
- *               we name them as best as possible by functional group.  In some
- *               places this is better than others.
- *<P>
+ * Probably one of the more complex records.<p>
+ * There are two breeds: Style and Cell.<p>
+ * It should be noted that fields in the extended format record are somewhat arbitrary.
+ * Almost all of the fields are bit-level, but we name them as best as possible by functional group.
+ * In some places this is better than others.
  *
- * REFERENCE:  PG 426 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
-
  * @since 2.0-pre
  */
 
-public final class ExtendedFormatRecord
-    extends StandardRecord
-{
-    public static final short     sid                 = 0xE0;
+public final class ExtendedFormatRecord extends StandardRecord {
+    public static final short sid                 = 0xE0;
 
     // null constant
-    public static final short     NULL                = (short)0xfff0;
+    public static final short NULL                = (short)0xfff0;
 
     // xf type
-    public static final short     XF_STYLE            = 1;
-    public static final short     XF_CELL             = 0;
+    public static final short XF_STYLE            = 1;
+    public static final short XF_CELL             = 0;
 
     // borders
-    public static final short     NONE                = 0x0;
-    public static final short     THIN                = 0x1;
-    public static final short     MEDIUM              = 0x2;
-    public static final short     DASHED              = 0x3;
-    public static final short     DOTTED              = 0x4;
-    public static final short     THICK               = 0x5;
-    public static final short     DOUBLE              = 0x6;
-    public static final short     HAIR                = 0x7;
-    public static final short     MEDIUM_DASHED       = 0x8;
-    public static final short     DASH_DOT            = 0x9;
-    public static final short     MEDIUM_DASH_DOT     = 0xA;
-    public static final short     DASH_DOT_DOT        = 0xB;
-    public static final short     MEDIUM_DASH_DOT_DOT = 0xC;
-    public static final short     SLANTED_DASH_DOT    = 0xD;
+    public static final short NONE                = 0x0;
+    public static final short THIN                = 0x1;
+    public static final short MEDIUM              = 0x2;
+    public static final short DASHED              = 0x3;
+    public static final short DOTTED              = 0x4;
+    public static final short THICK               = 0x5;
+    public static final short DOUBLE              = 0x6;
+    public static final short HAIR                = 0x7;
+    public static final short MEDIUM_DASHED       = 0x8;
+    public static final short DASH_DOT            = 0x9;
+    public static final short MEDIUM_DASH_DOT     = 0xA;
+    public static final short DASH_DOT_DOT        = 0xB;
+    public static final short MEDIUM_DASH_DOT_DOT = 0xC;
+    public static final short SLANTED_DASH_DOT    = 0xD;
 
     // alignment
-    public static final short     GENERAL             = 0x0;
-    public static final short     LEFT                = 0x1;
-    public static final short     CENTER              = 0x2;
-    public static final short     RIGHT               = 0x3;
-    public static final short     FILL                = 0x4;
-    public static final short     JUSTIFY             = 0x5;
-    public static final short     CENTER_SELECTION    = 0x6;
+    public static final short GENERAL             = 0x0;
+    public static final short LEFT                = 0x1;
+    public static final short CENTER              = 0x2;
+    public static final short RIGHT               = 0x3;
+    public static final short FILL                = 0x4;
+    public static final short JUSTIFY             = 0x5;
+    public static final short CENTER_SELECTION    = 0x6;
 
     // vertical alignment
-    public static final short     VERTICAL_TOP        = 0x0;
-    public static final short     VERTICAL_CENTER     = 0x1;
-    public static final short     VERTICAL_BOTTOM     = 0x2;
-    public static final short     VERTICAL_JUSTIFY    = 0x3;
+    public static final short VERTICAL_TOP        = 0x0;
+    public static final short VERTICAL_CENTER     = 0x1;
+    public static final short VERTICAL_BOTTOM     = 0x2;
+    public static final short VERTICAL_JUSTIFY    = 0x3;
 
     // fill
-    public static final short     NO_FILL             = 0  ;
-    public static final short     SOLID_FILL          = 1  ;
-    public static final short     FINE_DOTS           = 2  ;
-    public static final short     ALT_BARS            = 3  ;
-    public static final short     SPARSE_DOTS         = 4  ;
-    public static final short     THICK_HORZ_BANDS    = 5  ;
-    public static final short     THICK_VERT_BANDS    = 6  ;
-    public static final short     THICK_BACKWARD_DIAG = 7  ;
-    public static final short     THICK_FORWARD_DIAG  = 8  ;
-    public static final short     BIG_SPOTS           = 9  ;
-    public static final short     BRICKS              = 10 ;
-    public static final short     THIN_HORZ_BANDS     = 11 ;
-    public static final short     THIN_VERT_BANDS     = 12 ;
-    public static final short     THIN_BACKWARD_DIAG  = 13 ;
-    public static final short     THIN_FORWARD_DIAG   = 14 ;
-    public static final short     SQUARES             = 15 ;
-    public static final short     DIAMONDS            = 16 ;
-
-    // fields in BOTH style and Cell XF records
-    private short                 field_1_font_index;             // not bit-mapped
-    private short                 field_2_format_index;           // not bit-mapped
+    public static final short NO_FILL             = 0;
+    public static final short SOLID_FILL          = 1;
+    public static final short FINE_DOTS           = 2;
+    public static final short ALT_BARS            = 3;
+    public static final short SPARSE_DOTS         = 4;
+    public static final short THICK_HORZ_BANDS    = 5;
+    public static final short THICK_VERT_BANDS    = 6;
+    public static final short THICK_BACKWARD_DIAG = 7;
+    public static final short THICK_FORWARD_DIAG  = 8;
+    public static final short BIG_SPOTS           = 9;
+    public static final short BRICKS              = 10;
+    public static final short THIN_HORZ_BANDS     = 11;
+    public static final short THIN_VERT_BANDS     = 12;
+    public static final short THIN_BACKWARD_DIAG  = 13;
+    public static final short THIN_FORWARD_DIAG   = 14;
+    public static final short SQUARES             = 15;
+    public static final short DIAMONDS            = 16;
 
     // field_3_cell_options bit map
-    private static final BitField _locked       = BitFieldFactory.getInstance(0x0001);
-    private static final BitField _hidden       = BitFieldFactory.getInstance(0x0002);
-    private static final BitField _xf_type      = BitFieldFactory.getInstance(0x0004);
-    private static final BitField _123_prefix   = BitFieldFactory.getInstance(0x0008);
-    private static final BitField _parent_index = BitFieldFactory.getInstance(0xFFF0);
-    private short                 field_3_cell_options;
+    private static final BitField _locked       = bf(0x0001);
+    private static final BitField _hidden       = bf(0x0002);
+    private static final BitField _xf_type      = bf(0x0004);
+    private static final BitField _123_prefix   = bf(0x0008);
+    private static final BitField _parent_index = bf(0xFFF0);
 
     // field_4_alignment_options bit map
-    private static final BitField _alignment          = BitFieldFactory.getInstance(0x0007);
-    private static final BitField _wrap_text          = BitFieldFactory.getInstance(0x0008);
-    private static final BitField _vertical_alignment = BitFieldFactory.getInstance(0x0070);
-    private static final BitField _justify_last       = BitFieldFactory.getInstance(0x0080);
-    private static final BitField _rotation           = BitFieldFactory.getInstance(0xFF00);
-    private short                 field_4_alignment_options;
+    private static final BitField _alignment          = bf(0x0007);
+    private static final BitField _wrap_text          = bf(0x0008);
+    private static final BitField _vertical_alignment = bf(0x0070);
+    private static final BitField _justify_last       = bf(0x0080);
+    private static final BitField _rotation           = bf(0xFF00);
 
     // field_5_indention_options
-    private static final BitField _indent                         =
-        BitFieldFactory.getInstance(0x000F);
-    private static final BitField _shrink_to_fit                  =
-        BitFieldFactory.getInstance(0x0010);
-    private static final BitField _merge_cells                    =
-        BitFieldFactory.getInstance(0x0020);
-    private static final BitField _reading_order                  =
-        BitFieldFactory.getInstance(0x00C0);
+    private static final BitField _indent        = bf(0x000F);
+    private static final BitField _shrink_to_fit = bf(0x0010);
+    private static final BitField _merge_cells   = bf(0x0020);
+    private static final BitField _reading_order = bf(0x00C0);
 
     // apparently bits 8 and 9 are unused
-    private static final BitField _indent_not_parent_format       =
-        BitFieldFactory.getInstance(0x0400);
-    private static final BitField _indent_not_parent_font         =
-        BitFieldFactory.getInstance(0x0800);
-    private static final BitField _indent_not_parent_alignment    =
-        BitFieldFactory.getInstance(0x1000);
-    private static final BitField _indent_not_parent_border       =
-        BitFieldFactory.getInstance(0x2000);
-    private static final BitField _indent_not_parent_pattern      =
-        BitFieldFactory.getInstance(0x4000);
-    private static final BitField _indent_not_parent_cell_options =
-        BitFieldFactory.getInstance(0x8000);
-    private short                 field_5_indention_options;
+    private static final BitField _indent_not_parent_format       = bf(0x0400);
+    private static final BitField _indent_not_parent_font         = bf(0x0800);
+    private static final BitField _indent_not_parent_alignment    = bf(0x1000);
+    private static final BitField _indent_not_parent_border       = bf(0x2000);
+    private static final BitField _indent_not_parent_pattern      = bf(0x4000);
+    private static final BitField _indent_not_parent_cell_options = bf(0x8000);
 
     // field_6_border_options bit map
-    private static final BitField _border_left   = BitFieldFactory.getInstance(0x000F);
-    private static final BitField _border_right  = BitFieldFactory.getInstance(0x00F0);
-    private static final BitField _border_top    = BitFieldFactory.getInstance(0x0F00);
-    private static final BitField _border_bottom = BitFieldFactory.getInstance(0xF000);
-    private short                 field_6_border_options;
+    private static final BitField _border_left   = bf(0x000F);
+    private static final BitField _border_right  = bf(0x00F0);
+    private static final BitField _border_top    = bf(0x0F00);
+    private static final BitField _border_bottom = bf(0xF000);
 
     // all three of the following attributes are palette options
     // field_7_palette_options bit map
-    private static final BitField _left_border_palette_idx  =
-        BitFieldFactory.getInstance(0x007F);
-    private static final BitField _right_border_palette_idx =
-        BitFieldFactory.getInstance(0x3F80);
-    private static final BitField _diag                     =
-        BitFieldFactory.getInstance(0xC000);
-    private short                 field_7_palette_options;
+    private static final BitField _left_border_palette_idx  = bf(0x007F);
+    private static final BitField _right_border_palette_idx = bf(0x3F80);
+    private static final BitField _diag                     = bf(0xC000);
 
     // field_8_adtl_palette_options bit map
-    private static final BitField _top_border_palette_idx    =
-        BitFieldFactory.getInstance(0x0000007F);
-    private static final BitField _bottom_border_palette_idx =
-        BitFieldFactory.getInstance(0x00003F80);
-    private static final BitField _adtl_diag                 =
-        BitFieldFactory.getInstance(0x001fc000);
-    private static final BitField _adtl_diag_line_style      =
-        BitFieldFactory.getInstance(0x01e00000);
+    private static final BitField _top_border_palette_idx    = bf(0x0000007F);
+    private static final BitField _bottom_border_palette_idx = bf(0x00003F80);
+    private static final BitField _adtl_diag                 = bf(0x001fc000);
+    private static final BitField _adtl_diag_line_style      = bf(0x01e00000);
 
     // apparently bit 25 is unused
-    private static final BitField _adtl_fill_pattern         =
-        BitFieldFactory.getInstance(0xfc000000);
-    private int                   field_8_adtl_palette_options;   // additional to avoid 2
+    private static final BitField _adtl_fill_pattern         = bf(0xfc000000);
 
     // field_9_fill_palette_options bit map
-    private static final BitField _fill_foreground = BitFieldFactory.getInstance(0x007F);
-    private static final BitField _fill_background = BitFieldFactory.getInstance(0x3f80);
+    private static final BitField _fill_foreground = bf(0x007F);
+    private static final BitField _fill_background = bf(0x3f80);
+
+    private static BitField bf(int i) {
+        return BitFieldFactory.getInstance(i);
+    }
+
+
+    // fields in BOTH style and Cell XF records
+    private short field_1_font_index;             // not bit-mapped
+    private short field_2_format_index;           // not bit-mapped
+
+    private short field_3_cell_options;
+    private short field_4_alignment_options;
+    private short field_5_indention_options;
+    private short field_6_border_options;
+    private short field_7_palette_options;
+    private int   field_8_adtl_palette_options;   // additional to avoid 2
+
 
     // apparently bits 15 and 14 are unused
-    private short                 field_9_fill_palette_options;
+    private short field_9_fill_palette_options;
 
-    /**
-     * Constructor ExtendedFormatRecord
-     *
-     *
-     */
+    public ExtendedFormatRecord() {}
 
-    public ExtendedFormatRecord()
-    {
+    public ExtendedFormatRecord(ExtendedFormatRecord other) {
+        super(other);
+        field_1_font_index           = other.field_1_font_index;
+        field_2_format_index         = other.field_2_format_index;
+        field_3_cell_options         = other.field_3_cell_options;
+        field_4_alignment_options    = other.field_4_alignment_options;
+        field_5_indention_options    = other.field_5_indention_options;
+        field_6_border_options       = other.field_6_border_options;
+        field_7_palette_options      = other.field_7_palette_options;
+        field_8_adtl_palette_options = other.field_8_adtl_palette_options;
+        field_9_fill_palette_options = other.field_9_fill_palette_options;
     }
 
-    public ExtendedFormatRecord(RecordInputStream in)
-    {
+    public ExtendedFormatRecord(RecordInputStream in) {
         field_1_font_index           = in.readShort();
         field_2_format_index         = in.readShort();
         field_3_cell_options         = in.readShort();
@@ -560,7 +545,7 @@ public final class ExtendedFormatRecord
     /**
      * <p>Sets whether or not to use the pattern in this XF instead of the
      * parent XF (foreground/background).</p>
-     * 
+     *
      * @param pattern {@code true} if this XF has a different pattern
      *        value than its parent, {@code false} otherwise.
      * @see #setIndentionOptions(short)
@@ -1788,16 +1773,16 @@ public final class ExtendedFormatRecord
     {
         return sid;
     }
-    
+
     /**
      * Clones all the style information from another
-     *  ExtendedFormatRecord, onto this one. This 
+     *  ExtendedFormatRecord, onto this one. This
      *  will then hold all the same style options.
-     *  
+     *
      * If The source ExtendedFormatRecord comes from
      *  a different Workbook, you will need to sort
      *  out the font and format indices yourself!
-     * 
+     *
      * @param source the ExtendedFormatRecord to copy from
      */
     public void cloneStyleFrom(ExtendedFormatRecord source) {
@@ -1863,11 +1848,15 @@ public final class ExtendedFormatRecord
 		}
 		return false;
 	}
-	
+
 	public int[] stateSummary() {
 		return new int[] { field_1_font_index, field_2_format_index, field_3_cell_options, field_4_alignment_options,
 				field_5_indention_options, field_6_border_options, field_7_palette_options, field_8_adtl_palette_options, field_9_fill_palette_options };
 	}
-    
-    
+
+
+    @Override
+    public ExtendedFormatRecord copy() {
+        return new ExtendedFormatRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/ExternSheetRecord.java

@@ -28,9 +28,9 @@ import org.apache.poi.util.LittleEndianOutput;
  */
 public class ExternSheetRecord extends StandardRecord {
 
-    public final static short sid = 0x0017;
-	private final List<RefSubRecord> _list;
-	
+    public static final short sid = 0x0017;
+	private final List<RefSubRecord> _list = new ArrayList<>();
+
 	private static final class RefSubRecord {
 		public static final int ENCODED_SIZE = 6;
 
@@ -38,26 +38,31 @@ public class ExternSheetRecord extends StandardRecord {
 		private final int _extBookIndex;
 		private int _firstSheetIndex; // may be -1 (0xFFFF)
 		private int _lastSheetIndex;  // may be -1 (0xFFFF)
-		
-		public void adjustIndex(int offset) {
-			_firstSheetIndex += offset;
-			_lastSheetIndex += offset;
-		}
-		
-		/** a Constructor for making new sub record
-		 */
+
 		public RefSubRecord(int extBookIndex, int firstSheetIndex, int lastSheetIndex) {
 			_extBookIndex = extBookIndex;
 			_firstSheetIndex = firstSheetIndex;
 			_lastSheetIndex = lastSheetIndex;
 		}
-		
+
+		public RefSubRecord(RefSubRecord other) {
+			_extBookIndex = other._extBookIndex;
+			_firstSheetIndex = other._firstSheetIndex;
+			_lastSheetIndex = other._lastSheetIndex;
+		}
+
 		/**
 		 * @param in the RecordInputstream to read the record from
 		 */
 		public RefSubRecord(RecordInputStream in) {
 			this(in.readShort(), in.readShort(), in.readShort());
 		}
+
+		public void adjustIndex(int offset) {
+			_firstSheetIndex += offset;
+			_lastSheetIndex += offset;
+		}
+
 		public int getExtBookIndex(){
 			return _extBookIndex;
 		}
@@ -67,7 +72,7 @@ public class ExternSheetRecord extends StandardRecord {
 		public int getLastSheetIndex(){
 			return _lastSheetIndex;
 		}
-		
+
 		@Override
 		public String toString() {
 			StringBuilder buffer = new StringBuilder();
@@ -76,55 +81,53 @@ public class ExternSheetRecord extends StandardRecord {
 			buffer.append(" lastSheet=").append(_lastSheetIndex);
 			return buffer.toString();
 		}
-		
+
 		public void serialize(LittleEndianOutput out) {
 			out.writeShort(_extBookIndex);
 			out.writeShort(_firstSheetIndex);
 			out.writeShort(_lastSheetIndex);
 		}
-	}	
-	
-	
-	
-	public ExternSheetRecord() {
-		_list = new ArrayList<>();
+	}
+
+	public ExternSheetRecord() {}
+
+	public ExternSheetRecord(ExternSheetRecord other) {
+		other._list.stream().map(RefSubRecord::new).forEach(_list::add);
 	}
 
 	public ExternSheetRecord(RecordInputStream in) {
-		_list = new ArrayList<>();
-		
 		int nItems  = in.readShort();
-		
+
 		for (int i = 0 ; i < nItems ; ++i) {
 			RefSubRecord rec = new RefSubRecord(in);
 			_list.add(rec);
 		}
 	}
-	
 
-	/**  
+
+	/**
 	 * @return number of REF structures
 	 */
 	public int getNumOfRefs() {
 		return _list.size();
 	}
-	
-	/** 
+
+	/**
 	 * adds REF struct (ExternSheetSubRecord)
 	 * @param rec REF struct
 	 */
 	public void addREFRecord(RefSubRecord rec) {
 		_list.add(rec);
 	}
-	
+
 	/** returns the number of REF Records, which is in model
 	 * @return number of REF records
 	 */
 	public int getNumOfREFRecords() {
 		return _list.size();
 	}
-	
-	
+
+
 	@Override
 	public String toString() {
 		StringBuilder sb = new StringBuilder();
@@ -137,22 +140,22 @@ public class ExternSheetRecord extends StandardRecord {
 			sb.append('\n');
 		}
 		sb.append("[/EXTERNSHEET]\n");
-		
-		
+
+
 		return sb.toString();
 	}
-	
+
 	@Override
 	protected int getDataSize() {
 		return 2 + _list.size() * RefSubRecord.ENCODED_SIZE;
 	}
-	
+
 	@Override
 	public void serialize(LittleEndianOutput out) {
 		int nItems = _list.size();
 
 		out.writeShort(nItems);
-		
+
 		for (int i = 0; i < nItems; i++) {
 			getRef(i).serialize(out);
 		}
@@ -161,22 +164,22 @@ public class ExternSheetRecord extends StandardRecord {
 	private RefSubRecord getRef(int i) {
 		return _list.get(i);
 	}
-	
+
 	public void removeSheet(int sheetIdx) {
         int nItems = _list.size();
         for (int i = 0; i < nItems; i++) {
             RefSubRecord refSubRecord = _list.get(i);
-            if(refSubRecord.getFirstSheetIndex() == sheetIdx && 
+            if(refSubRecord.getFirstSheetIndex() == sheetIdx &&
                     refSubRecord.getLastSheetIndex() == sheetIdx) {
             	// removing the entry would mess up the sheet index in Formula of NameRecord
             	_list.set(i, new RefSubRecord(refSubRecord.getExtBookIndex(), -1, -1));
-            } else if (refSubRecord.getFirstSheetIndex() > sheetIdx && 
+            } else if (refSubRecord.getFirstSheetIndex() > sheetIdx &&
                     refSubRecord.getLastSheetIndex() > sheetIdx) {
                 _list.set(i, new RefSubRecord(refSubRecord.getExtBookIndex(), refSubRecord.getFirstSheetIndex()-1, refSubRecord.getLastSheetIndex()-1));
             }
         }
 	}
-	
+
 	/**
 	 * return the non static version of the id for this record.
 	 */
@@ -187,7 +190,7 @@ public class ExternSheetRecord extends StandardRecord {
 
     /**
      * @param refIndex specifies the n-th refIndex
-     * 
+     *
      * @return the index of the SupBookRecord for this index
      */
     public int getExtbookIndexFromRefIndex(int refIndex) {
@@ -197,7 +200,7 @@ public class ExternSheetRecord extends StandardRecord {
 
 	/**
 	 * @param extBookIndex external sheet reference index
-	 * 
+	 *
 	 * @return -1 if not found
 	 */
 	public int findRefIndexFromExtBookIndex(int extBookIndex) {
@@ -214,9 +217,9 @@ public class ExternSheetRecord extends StandardRecord {
      * Returns the first sheet that the reference applies to, or
      *  -1 if the referenced sheet can't be found, or -2 if the
      *  reference is workbook scoped.
-     *  
+     *
      * @param extRefIndex external sheet reference index
-     * 
+     *
      * @return the first sheet that the reference applies to, or
      *  -1 if the referenced sheet can't be found, or -2 if the
      *  reference is workbook scoped
@@ -231,9 +234,9 @@ public class ExternSheetRecord extends StandardRecord {
      *  reference is workbook scoped.
      * For a single sheet reference, the first and last should be
      *  the same.
-     *  
+     *
      * @param extRefIndex external sheet reference index
-     * 
+     *
      * @return the last sheet that the reference applies to, or
      *  -1 if the referenced sheet can't be found, or -2 if the
      *  reference is workbook scoped.
@@ -258,7 +261,7 @@ public class ExternSheetRecord extends StandardRecord {
      *    see {@link org.apache.poi.hssf.record.SupBookRecord#getSheetNames()}.
      *    This referenced string specifies the name of the first sheet within the external workbook that is in scope.
      *    This sheet MUST be a worksheet or macro sheet.</p>
-     *    
+     *
      *    <p>If the supporting link type is self-referencing, then this value specifies the zero-based index of a
      *    {@link org.apache.poi.hssf.record.BoundSheetRecord} record in the workbook stream that specifies
      *    the first sheet within the scope of this reference. This sheet MUST be a worksheet or a macro sheet.
@@ -283,7 +286,7 @@ public class ExternSheetRecord extends StandardRecord {
 			if (ref.getExtBookIndex() != externalBookIndex) {
 				continue;
 			}
-			if (ref.getFirstSheetIndex() == firstSheetIndex && 
+			if (ref.getFirstSheetIndex() == firstSheetIndex &&
 			        ref.getLastSheetIndex() == lastSheetIndex) {
 				return i;
 			}
@@ -301,4 +304,9 @@ public class ExternSheetRecord extends StandardRecord {
 		}
 		return result;
 	}
+
+	@Override
+	public ExternSheetRecord copy() {
+		return new ExternSheetRecord(this);
+	}
 }

src/java/org/apache/poi/hssf/record/ExternalNameRecord.java

@@ -28,7 +28,7 @@ import org.apache.poi.util.StringUtil;
  */
 public final class ExternalNameRecord extends StandardRecord {
 
-	public final static short sid = 0x0023; // as per BIFF8. (some old versions used 0x223)
+	public static final short sid = 0x0023; // as per BIFF8. (some old versions used 0x223)
 
 	private static final int OPT_BUILTIN_NAME          = 0x0001;
 	private static final int OPT_AUTOMATIC_LINK        = 0x0002; // m$ doc calls this fWantAdvise
@@ -39,11 +39,11 @@ public final class ExternalNameRecord extends StandardRecord {
 	private static final int OPT_ICONIFIED_PICTURE_LINK= 0x8000;
 
 
-	private short  field_1_option_flag;
-	private short  field_2_ixals;
-	private short  field_3_not_used;
+	private short field_1_option_flag;
+	private short field_2_ixals;
+	private short field_3_not_used;
 	private String field_4_name;
-	private Formula  field_5_name_definition;
+	private Formula field_5_name_definition;
 
 	/**
 	 * 'rgoper' / 'Last received results of the DDE link'
@@ -60,6 +60,54 @@ public final class ExternalNameRecord extends StandardRecord {
 	 */
 	private int _nRows;
 
+	public ExternalNameRecord() {
+		field_2_ixals = 0;
+	}
+
+	public ExternalNameRecord(ExternalNameRecord other) {
+		super(other);
+		field_1_option_flag = other.field_1_option_flag;
+		field_2_ixals = other.field_2_ixals;
+		field_3_not_used = other.field_3_not_used;
+		field_4_name = other.field_4_name;
+		field_5_name_definition = (other.field_5_name_definition == null) ? null : other.field_5_name_definition.copy();
+		_ddeValues = (other._ddeValues == null) ? null : other._ddeValues.clone();
+		_nColumns = other._nColumns;
+		_nRows = other._nRows;
+	}
+
+	public ExternalNameRecord(RecordInputStream in) {
+		field_1_option_flag = in.readShort();
+		field_2_ixals       = in.readShort();
+		field_3_not_used    = in.readShort();
+
+		int numChars = in.readUByte();
+		field_4_name = StringUtil.readUnicodeString(in, numChars);
+
+		// the record body can take different forms.
+		// The form is dictated by the values of 3-th and 4-th bits in field_1_option_flag
+		if(!isOLELink() && !isStdDocumentNameIdentifier()){
+			// another switch: the fWantAdvise bit specifies whether the body describes
+			// an external defined name or a DDE data item
+			if(isAutomaticLink()){
+				if(in.available() > 0) {
+					//body specifies DDE data item
+					int nColumns = in.readUByte() + 1;
+					int nRows = in.readShort() + 1;
+
+					int totalCount = nRows * nColumns;
+					_ddeValues = ConstantValueParser.parse(in, totalCount);
+					_nColumns = nColumns;
+					_nRows = nRows;
+				}
+			} else {
+				//body specifies an external defined name
+				int formulaLen = in.readUShort();
+				field_5_name_definition = Formula.read(formulaLen, in);
+			}
+		}
+	}
+
 	/**
 	 * @return {@code true} if the name is a built-in name
 	 */
@@ -68,7 +116,7 @@ public final class ExternalNameRecord extends StandardRecord {
 	}
 	/**
 	 * For OLE and DDE, links can be either 'automatic' or 'manual'
-	 * 
+	 *
 	 * @return {@code true} if this is a automatic link
 	 */
 	public boolean isAutomaticLink() {
@@ -76,7 +124,7 @@ public final class ExternalNameRecord extends StandardRecord {
 	}
 	/**
 	 * only for OLE and DDE
-	 * 
+	 *
 	 * @return {@code true} if this is a picture link
 	 */
 	public boolean isPicureLink() {
@@ -84,7 +132,7 @@ public final class ExternalNameRecord extends StandardRecord {
 	}
 	/**
 	 * DDE links only. If <code>true</code>, this denotes the 'StdDocumentName'
-	 * 
+	 *
 	 * @return {@code true} if this denotes the 'StdDocumentName'
 	 */
 	public boolean isStdDocumentNameIdentifier() {
@@ -102,7 +150,7 @@ public final class ExternalNameRecord extends StandardRecord {
 	public String getText() {
 		return field_4_name;
 	}
-	
+
     public void setText(String str) {
         field_4_name = str;
     }
@@ -112,13 +160,13 @@ public final class ExternalNameRecord extends StandardRecord {
 	 *  index of the name of the Sheet this refers to, as
 	 *  defined in the preceding {@link SupBookRecord}.
 	 * If it isn't a local name, then it must be zero.
-	 * 
+	 *
 	 * @return the index of the name of the Sheet this refers to
 	 */
 	public short getIx() {
 	   return field_2_ixals;
 	}
-	
+
     public void setIx(short ix) {
         field_2_ixals = ix;
     }
@@ -134,7 +182,7 @@ public final class ExternalNameRecord extends StandardRecord {
 	@Override
 	protected int getDataSize(){
 		int result = 2 + 4;  // short and int
-        result += StringUtil.getEncodedSize(field_4_name) - 1; //size is byte, not short 
+        result += StringUtil.getEncodedSize(field_4_name) - 1; //size is byte, not short
 
         if(!isOLELink() && !isStdDocumentNameIdentifier()){
             if(isAutomaticLink()){
@@ -171,42 +219,6 @@ public final class ExternalNameRecord extends StandardRecord {
         }
 	}
 
-    public ExternalNameRecord() {
-        field_2_ixals = 0;
-    }
-    
-    public ExternalNameRecord(RecordInputStream in) {
-		field_1_option_flag = in.readShort();
-		field_2_ixals       = in.readShort();
-      field_3_not_used    = in.readShort();
-
-        int numChars = in.readUByte();
-        field_4_name = StringUtil.readUnicodeString(in, numChars);
-
-        // the record body can take different forms.
-        // The form is dictated by the values of 3-th and 4-th bits in field_1_option_flag
-        if(!isOLELink() && !isStdDocumentNameIdentifier()){
-            // another switch: the fWantAdvise bit specifies whether the body describes
-            // an external defined name or a DDE data item
-            if(isAutomaticLink()){
-                if(in.available() > 0) {
-                   //body specifies DDE data item
-                   int nColumns = in.readUByte() + 1;
-                   int nRows = in.readShort() + 1;
-   
-                   int totalCount = nRows * nColumns;
-                   _ddeValues = ConstantValueParser.parse(in, totalCount);
-                   _nColumns = nColumns;
-                   _nRows = nRows;
-                }
-            } else {
-                //body specifies an external defined name
-                int formulaLen = in.readUShort();
-                field_5_name_definition = Formula.read(formulaLen, in);
-            }
-        }
-    }
-
 	@Override
 	public short getSid() {
 		return sid;
@@ -228,4 +240,9 @@ public final class ExternalNameRecord extends StandardRecord {
 		sb.append("[/EXTERNALNAME]\n");
 		return sb.toString();
 	}
+
+	@Override
+	public ExternalNameRecord copy() {
+		return new ExternalNameRecord(this);
+	}
 }

src/java/org/apache/poi/hssf/record/FeatHdrRecord.java

@@ -19,29 +19,30 @@ package org.apache.poi.hssf.record;
 
 import org.apache.poi.hssf.record.common.FtrHeader;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
  * Title: FeatHdr (Feature Header) Record
  * <P>
- * This record specifies common information for Shared Features, and 
- *  specifies the beginning of a collection of records to define them. 
- * The collection of data (Globals Substream ABNF, macro sheet substream 
+ * This record specifies common information for Shared Features, and
+ *  specifies the beginning of a collection of records to define them.
+ * The collection of data (Globals Substream ABNF, macro sheet substream
  *  ABNF or worksheet substream ABNF) specifies Shared Feature data.
  */
-public final class FeatHdrRecord extends StandardRecord implements Cloneable  {
+public final class FeatHdrRecord extends StandardRecord {
 	/**
-	 * Specifies the enhanced protection type. Used to protect a 
-	 * shared workbook by restricting access to some areas of it 
+	 * Specifies the enhanced protection type. Used to protect a
+	 * shared workbook by restricting access to some areas of it
 	 */
 	public static final int SHAREDFEATURES_ISFPROTECTION = 0x02;
 	/**
-	 * Specifies that formula errors should be ignored 
+	 * Specifies that formula errors should be ignored
 	 */
 	public static final int SHAREDFEATURES_ISFFEC2       = 0x03;
 	/**
 	 * Specifies the smart tag type. Recognises certain
 	 * types of entries (proper names, dates/times etc) and
-	 * flags them for action 
+	 * flags them for action
 	 */
 	public static final int SHAREDFEATURES_ISFFACTOID    = 0x04;
 	/**
@@ -50,13 +51,13 @@ public final class FeatHdrRecord extends StandardRecord implements Cloneable  {
 	 */
 	public static final int SHAREDFEATURES_ISFLIST       = 0x05;
 
-	
-	public final static short sid = 0x0867;
 
-	private FtrHeader futureHeader;
+	public static final short sid = 0x0867;
+
+	private final FtrHeader futureHeader;
 	private int isf_sharedFeatureType; // See SHAREDFEATURES_
 	private byte reserved; // Should always be one
-	/** 
+	/**
 	 * 0x00000000 = rgbHdrData not present
 	 * 0xffffffff = rgbHdrData present
 	 */
@@ -69,13 +70,18 @@ public final class FeatHdrRecord extends StandardRecord implements Cloneable  {
 		futureHeader.setRecordType(sid);
 	}
 
-	public short getSid() {
-		return sid;
+	public FeatHdrRecord(FeatHdrRecord other) {
+		super(other);
+		futureHeader = other.futureHeader.copy();
+		isf_sharedFeatureType = other.isf_sharedFeatureType;
+		reserved = other.reserved;
+		cbHdrData = other.cbHdrData;
+		rgbHdrData = (other.rgbHdrData == null) ? null : other.rgbHdrData.clone();
 	}
 
 	public FeatHdrRecord(RecordInputStream in) {
 		futureHeader = new FtrHeader(in);
-		
+
 		isf_sharedFeatureType = in.readShort();
 		reserved = in.readByte();
 		cbHdrData = in.readInt();
@@ -83,19 +89,23 @@ public final class FeatHdrRecord extends StandardRecord implements Cloneable  {
 		rgbHdrData = in.readRemainder();
 	}
 
+	public short getSid() {
+		return sid;
+	}
+
 	public String toString() {
 		StringBuilder buffer = new StringBuilder();
 		buffer.append("[FEATURE HEADER]\n");
-		
+
 		// TODO ...
-		
+
 		buffer.append("[/FEATURE HEADER]\n");
 		return buffer.toString();
 	}
 
 	public void serialize(LittleEndianOutput out) {
 		futureHeader.serialize(out);
-		
+
 		out.writeShort(isf_sharedFeatureType);
 		out.writeByte(reserved);
 		out.writeInt((int)cbHdrData);
@@ -105,12 +115,20 @@ public final class FeatHdrRecord extends StandardRecord implements Cloneable  {
 	protected int getDataSize() {
 		return 12 + 2+1+4+rgbHdrData.length;
 	}
-    
+
+	@Override
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
+	public FeatHdrRecord clone() {
+		return copy();
+	}
+
 	@Override
-    public FeatHdrRecord clone() {
+    public FeatHdrRecord copy() {
 	    //HACK: do a "cheat" clone, see Record.java for more information
-        return (FeatHdrRecord)cloneViaReserialise();
+        return new FeatHdrRecord(this);
     }
 
-    
+
 }

src/java/org/apache/poi/hssf/record/FeatRecord.java

@@ -17,6 +17,8 @@
 
 package org.apache.poi.hssf.record;
 
+import java.util.stream.Stream;
+
 import org.apache.poi.hssf.record.common.FeatFormulaErr2;
 import org.apache.poi.hssf.record.common.FeatProtection;
 import org.apache.poi.hssf.record.common.FeatSmartTag;
@@ -26,6 +28,7 @@ import org.apache.poi.ss.util.CellRangeAddress;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.POILogFactory;
 import org.apache.poi.util.POILogger;
+import org.apache.poi.util.Removal;
 
 /**
  * Title: Feat (Feature) Record
@@ -33,19 +36,17 @@ import org.apache.poi.util.POILogger;
  * This record specifies Shared Features data. It is normally paired
  *  up with a {@link FeatHdrRecord}.
  */
-public final class FeatRecord extends StandardRecord implements Cloneable  {
-    private static POILogger logger = POILogFactory.getLogger(FeatRecord.class);
-    public final static short sid = 0x0868;
+public final class FeatRecord extends StandardRecord {
+    private static final POILogger logger = POILogFactory.getLogger(FeatRecord.class);
+    public static final short sid = 0x0868;
     // SIDs from newer versions
-    public final static short v11_sid = 0x0872;
-    public final static short v12_sid = 0x0878;
-	
-	private FtrHeader futureHeader;
-	
-	/**
-	 * See SHAREDFEATURES_* on {@link FeatHdrRecord}
-	 */
-	private int isf_sharedFeatureType; 
+    public static final short v11_sid = 0x0872;
+    public static final short v12_sid = 0x0878;
+
+	private final FtrHeader futureHeader;
+
+	/** See SHAREDFEATURES_* on {@link FeatHdrRecord} */
+	private int isf_sharedFeatureType;
 	private byte reserved1; // Should always be zero
 	private long reserved2; // Should always be zero
 	/** Only matters if type is ISFFEC2 */
@@ -55,24 +56,33 @@ public final class FeatRecord extends StandardRecord implements Cloneable  {
 
 	/**
 	 * Contents depends on isf_sharedFeatureType :
-	 *  ISFPROTECTION -> FeatProtection 
+	 *  ISFPROTECTION -> FeatProtection
 	 *  ISFFEC2       -> FeatFormulaErr2
 	 *  ISFFACTOID    -> FeatSmartTag
 	 */
-	private SharedFeature sharedFeature; 
-	
+	private SharedFeature sharedFeature;
+
 	public FeatRecord() {
 		futureHeader = new FtrHeader();
 		futureHeader.setRecordType(sid);
 	}
 
-	public short getSid() {
-		return sid;
+	public FeatRecord(FeatRecord other) {
+		super(other);
+		futureHeader = other.futureHeader.copy();
+		isf_sharedFeatureType = other.isf_sharedFeatureType;
+		reserved1 = other.reserved1;
+		reserved2 = other.reserved2;
+		cbFeatData = other.cbFeatData;
+		reserved3 = other.reserved3;
+		cellRefs = (other.cellRefs == null) ? null :
+			Stream.of(other.cellRefs).map(CellRangeAddress::copy).toArray(CellRangeAddress[]::new);
+		sharedFeature = (other.sharedFeature == null) ? null : other.sharedFeature.copy();
 	}
 
 	public FeatRecord(RecordInputStream in) {
 		futureHeader = new FtrHeader(in);
-		
+
 		isf_sharedFeatureType = in.readShort();
 		reserved1 = in.readByte();
 		reserved2 = in.readInt();
@@ -84,7 +94,7 @@ public final class FeatRecord extends StandardRecord implements Cloneable  {
 		for(int i=0; i<cellRefs.length; i++) {
 			cellRefs[i] = new CellRangeAddress(in);
 		}
-		
+
 		switch(isf_sharedFeatureType) {
 		case FeatHdrRecord.SHAREDFEATURES_ISFPROTECTION:
 			sharedFeature = new FeatProtection(in);
@@ -100,30 +110,34 @@ public final class FeatRecord extends StandardRecord implements Cloneable  {
 		}
 	}
 
+	public short getSid() {
+		return sid;
+	}
+
 	public String toString() {
 		StringBuilder buffer = new StringBuilder();
 		buffer.append("[SHARED FEATURE]\n");
-		
+
 		// TODO ...
-		
+
 		buffer.append("[/SHARED FEATURE]\n");
 		return buffer.toString();
 	}
 
 	public void serialize(LittleEndianOutput out) {
 		futureHeader.serialize(out);
-		
+
 		out.writeShort(isf_sharedFeatureType);
 		out.writeByte(reserved1);
 		out.writeInt((int)reserved2);
 		out.writeShort(cellRefs.length);
 		out.writeInt((int)cbFeatData);
 		out.writeShort(reserved3);
-		
+
 		for(int i=0; i<cellRefs.length; i++) {
 			cellRefs[i].serialize(out);
 		}
-		
+
 		sharedFeature.serialize(out);
 	}
 
@@ -156,7 +170,7 @@ public final class FeatRecord extends StandardRecord implements Cloneable  {
 	}
 	public void setSharedFeature(SharedFeature feature) {
 		this.sharedFeature = feature;
-		
+
 		if(feature instanceof FeatProtection) {
 			isf_sharedFeatureType = FeatHdrRecord.SHAREDFEATURES_ISFPROTECTION;
 		}
@@ -166,7 +180,7 @@ public final class FeatRecord extends StandardRecord implements Cloneable  {
 		if(feature instanceof FeatSmartTag) {
 			isf_sharedFeatureType = FeatHdrRecord.SHAREDFEATURES_ISFFACTOID;
 		}
-		
+
 		if(isf_sharedFeatureType == FeatHdrRecord.SHAREDFEATURES_ISFFEC2) {
 			cbFeatData = sharedFeature.getDataSize();
 		} else {
@@ -174,12 +188,16 @@ public final class FeatRecord extends StandardRecord implements Cloneable  {
 		}
 	}
 
-    
 	@Override
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
 	public FeatRecord clone() {
-        //HACK: do a "cheat" clone, see Record.java for more information
-        return (FeatRecord)cloneViaReserialise();
-    }
+		return copy();
+	}
 
-    
+	@Override
+	public FeatRecord copy() {
+        return new FeatRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/FilePassRecord.java

@@ -33,13 +33,14 @@ import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianByteArrayOutputStream;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.LittleEndianOutputStream;
+import org.apache.poi.util.Removal;
 
 /**
- * Title: File Pass Record (0x002F) <p>
+ * File Pass Record (0x002F) <p>
  *
- * Description: Indicates that the record after this record are encrypted.
+ * Indicates that the record after this record are encrypted.
  */
-public final class FilePassRecord extends StandardRecord implements Cloneable {
+public final class FilePassRecord extends StandardRecord {
 	public static final short sid = 0x002F;
     private static final int ENCRYPTION_XOR = 0;
     private static final int ENCRYPTION_OTHER = 1;
@@ -48,12 +49,9 @@ public final class FilePassRecord extends StandardRecord implements Cloneable {
     private EncryptionInfo encryptionInfo;
 
 	private FilePassRecord(FilePassRecord other) {
+        super(other);
 	    encryptionType = other.encryptionType;
-        try {
-            encryptionInfo = other.encryptionInfo.clone();
-        } catch (CloneNotSupportedException e) {
-            throw new EncryptedDocumentException(e);
-        }
+        encryptionInfo = other.encryptionInfo.copy();
 	}
 
 	public FilePassRecord(EncryptionMode encryptionMode) {
@@ -138,8 +136,16 @@ public final class FilePassRecord extends StandardRecord implements Cloneable {
 		return sid;
 	}
 
-	@Override
-	public FilePassRecord clone() {
+    @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
+    public FilePassRecord clone() {
+        return copy();
+    }
+
+    @Override
+	public FilePassRecord copy() {
 		return new FilePassRecord(this);
 	}
 

src/java/org/apache/poi/hssf/record/FileSharingRecord.java

@@ -18,17 +18,16 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 import org.apache.poi.util.StringUtil;
 
 /**
- * Title:        FILESHARING (0x005B) <p>
- * Description:  stores the encrypted readonly for a workbook (write protect) 
- * This functionality is accessed from the options dialog box available when performing 'Save As'.<p>
- * REFERENCE:  PG 314 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
+ * Stores the encrypted readonly for a workbook (write protect).<p>
+ * This functionality is accessed from the options dialog box available when performing 'Save As'.
  */
-public final class FileSharingRecord extends StandardRecord implements Cloneable {
+public final class FileSharingRecord extends StandardRecord {
 
-    public final static short sid = 0x005B;
+    public static final short sid = 0x005B;
     private short             field_1_readonly;
     private short             field_2_password;
     private byte              field_3_username_unicode_options;
@@ -36,14 +35,22 @@ public final class FileSharingRecord extends StandardRecord implements Cloneable
 
     public FileSharingRecord() {}
 
+    public FileSharingRecord(FileSharingRecord other) {
+        super(other);
+        field_1_readonly = other.field_1_readonly;
+        field_2_password = other.field_2_password;
+        field_3_username_unicode_options = other.field_3_username_unicode_options;
+        field_3_username_value = other.field_3_username_value;
+    }
+
     public FileSharingRecord(RecordInputStream in) {
         field_1_readonly = in.readShort();
         field_2_password = in.readShort();
-        
+
         int nameLen = in.readShort();
-        
+
         if(nameLen > 0) {
-            // TODO - Current examples(3) from junits only have zero length username. 
+            // TODO - Current examples(3) from junits only have zero length username.
             field_3_username_unicode_options = in.readByte();
             field_3_username_value = in.readCompressedUnicode(nameLen);
         } else {
@@ -137,11 +144,15 @@ public final class FileSharingRecord extends StandardRecord implements Cloneable
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public FileSharingRecord clone() {
-      FileSharingRecord clone = new FileSharingRecord();
-      clone.setReadOnly(field_1_readonly);
-      clone.setPassword(field_2_password);
-      clone.setUsername(field_3_username_value);
-      return clone;
+        return copy();
+    }
+
+    @Override
+    public FileSharingRecord copy() {
+      return new FileSharingRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/FnGroupCountRecord.java

@@ -15,35 +15,32 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Title: Function Group Count Record<P>
- * Description:  Number of built in function groups in the current version of the
- *               Spreadsheet (probably only used on Windoze)<P>
- * REFERENCE:  PG 315 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
+ * umber of built in function groups in the current version of the Spreadsheet (probably only used on Windows)
+ *
  * @version 2.0-pre
  */
-
-public final class FnGroupCountRecord
-    extends StandardRecord
-{
-    public final static short sid   = 0x9c;
+public final class FnGroupCountRecord extends StandardRecord {
+    public static final short sid   = 0x9c;
 
     /**
      * suggested default (14 dec)
      */
 
-    public final static short COUNT = 14;
+    public static final short COUNT = 14;
     private short             field_1_count;
 
-    public FnGroupCountRecord()
-    {
+    public FnGroupCountRecord() {}
+
+    public FnGroupCountRecord(FnGroupCountRecord other) {
+        super(other);
+        field_1_count = other.field_1_count;
     }
 
     public FnGroupCountRecord(RecordInputStream in)
@@ -96,4 +93,9 @@ public final class FnGroupCountRecord
     {
         return sid;
     }
+
+    @Override
+    public FnGroupCountRecord copy() {
+        return new FnGroupCountRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/FontRecord.java

@@ -25,50 +25,68 @@ import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.StringUtil;
 
-/**
- * Title:        Font Record (0x0031) <p>
- * - describes a font in the workbook (index = 0-3,5-infinity - skip 4)<P>
- * Description:  An element in the Font Table<p>
- * REFERENCE:  PG 315 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
- */
+/** Describes a font in the workbook */
 public final class FontRecord extends StandardRecord {
 	// docs are wrong (0x231 Microsoft Support site article Q184647)
-	public final static short     sid                 = 0x0031;
-	public final static short     SS_NONE             = 0;
-	public final static short     SS_SUPER            = 1;
-	public final static short     SS_SUB              = 2;
-	public final static byte      U_NONE              = 0;
-	public final static byte      U_SINGLE            = 1;
-	public final static byte      U_DOUBLE            = 2;
-	public final static byte      U_SINGLE_ACCOUNTING = 0x21;
-	public final static byte      U_DOUBLE_ACCOUNTING = 0x22;
-	// in units of .05 of a point
-	private short                 field_1_font_height;
-	private short                 field_2_attributes;
+	public static final short sid                = 0x0031;
+	public static final short SS_NONE            = 0;
+	public static final short SS_SUPER           = 1;
+	public static final short SS_SUB             = 2;
+	public static final byte U_NONE              = 0;
+	public static final byte U_SINGLE            = 1;
+	public static final byte U_DOUBLE            = 2;
+	public static final byte U_SINGLE_ACCOUNTING = 0x21;
+	public static final byte U_DOUBLE_ACCOUNTING = 0x22;
 
 	// 0 0x01 - Reserved bit must be 0
-	private static final BitField italic     = BitFieldFactory.getInstance(0x02); // is this font in italics
+	// is this font in italics
+	private static final BitField italic     = BitFieldFactory.getInstance(0x02);
 
 	// 2 0x04 - reserved bit must be 0
-	private static final BitField strikeout  =BitFieldFactory.getInstance(0x08);  // is this font has a line through the center
-	private static final BitField macoutline = BitFieldFactory.getInstance(0x10); // some weird macintosh thing....but who understands those mac people anyhow
-	private static final BitField macshadow  = BitFieldFactory.getInstance(0x20); // some weird macintosh thing....but who understands those mac people anyhow
+	// is this font has a line through the center
+	private static final BitField strikeout  = BitFieldFactory.getInstance(0x08);
+	// some weird macintosh thing....but who understands those mac people anyhow
+	private static final BitField macoutline = BitFieldFactory.getInstance(0x10);
+	private static final BitField macshadow  = BitFieldFactory.getInstance(0x20);
+
+	// in units of .05 of a point
+	private short field_1_font_height;
+	private short field_2_attributes;
 
 	// 7-6 - reserved bits must be 0
 	// the rest is unused
-	private short                 field_3_color_palette_index;
-	private short                 field_4_bold_weight;
-	private short                 field_5_super_sub_script;   // 00none/01super/02sub
-	private byte                  field_6_underline;          // 00none/01single/02double/21singleaccounting/22doubleaccounting
-	private byte                  field_7_family;             // ?? defined by windows api logfont structure?
-	private byte                  field_8_charset;            // ?? defined by windows api logfont structure?
-	private byte                  field_9_zero;           // must be 0
+	private short field_3_color_palette_index;
+	private short field_4_bold_weight;
+	// 00none/01super/02sub
+	private short field_5_super_sub_script;
+	// 00none/01single/02double/21singleaccounting/22doubleaccounting
+	private byte field_6_underline;
+	// ?? defined by windows api logfont structure?
+	private byte field_7_family;
+	// ?? defined by windows api logfont structure?
+	private byte field_8_charset;
+	// must be 0
+	private byte field_9_zero;
 	/** possibly empty string never <code>null</code> */
-	private String                field_11_font_name;
+	private String field_11_font_name;
 
 	public FontRecord() {
 	}
 
+	public FontRecord(FontRecord other) {
+		super(other);
+		field_1_font_height = other.field_1_font_height;
+		field_2_attributes = other.field_2_attributes;
+		field_3_color_palette_index = other.field_3_color_palette_index;
+		field_4_bold_weight = other.field_4_bold_weight;
+		field_5_super_sub_script = other.field_5_super_sub_script;
+		field_6_underline = other.field_6_underline;
+		field_7_family = other.field_7_family;
+		field_8_charset = other.field_8_charset;
+		field_9_zero = other.field_9_zero;
+		field_11_font_name = other.field_11_font_name;
+	}
+
 	public FontRecord(RecordInputStream in) {
 		field_1_font_height         = in.readShort();
 		field_2_attributes          = in.readShort();
@@ -490,4 +508,9 @@ public final class FontRecord extends StandardRecord {
     public boolean equals(Object o) {
         return (o instanceof FontRecord) && sameProperties((FontRecord) o);
     }
+
+	@Override
+	public FontRecord copy() {
+		return new FontRecord(this);
+	}
 }

src/java/org/apache/poi/hssf/record/FooterRecord.java

@@ -17,18 +17,22 @@
 
 package org.apache.poi.hssf.record;
 
+import org.apache.poi.util.Removal;
+
 /**
- * Title:        Footer Record (0x0015)<p>
- * Description:  Specifies the footer for a sheet<p>
- * REFERENCE:  PG 317 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
+ * Specifies the footer for a sheet
  */
-public final class FooterRecord extends HeaderFooterBase implements Cloneable {
-	public final static short sid = 0x0015;
+public final class FooterRecord extends HeaderFooterBase {
+	public static final short sid = 0x0015;
 
 	public FooterRecord(String text) {
 		super(text);
 	}
 
+	public FooterRecord(FooterRecord other) {
+		super(other);
+	}
+
 	public FooterRecord(RecordInputStream in) {
 		super(in);
 	}
@@ -47,7 +51,15 @@ public final class FooterRecord extends HeaderFooterBase implements Cloneable {
 	}
 
 	@Override
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
 	public FooterRecord clone() {
-		return new FooterRecord(getText());
+		return copy();
+	}
+
+	@Override
+	public FooterRecord copy() {
+		return new FooterRecord(this);
 	}
 }

src/java/org/apache/poi/hssf/record/FormatRecord.java

@@ -22,30 +22,29 @@ import org.apache.poi.util.LittleEndianConsts;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.POILogFactory;
 import org.apache.poi.util.POILogger;
+import org.apache.poi.util.Removal;
 import org.apache.poi.util.StringUtil;
 
 /**
- * Title:        Format Record (0x041E)<p>
- * Description:  describes a number format -- those goofy strings like $(#,###)<p>
- *
- * REFERENCE:  PG 317 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
+ * Describes a number format -- those goofy strings like $(#,###)
  */
-public final class FormatRecord extends StandardRecord implements Cloneable {
+public final class FormatRecord extends StandardRecord {
 
     private static final POILogger logger = POILogFactory.getLogger(FormatRecord.class);
 
-    public final static short sid = 0x041E;
+    public static final short sid = 0x041E;
 
     private final int field_1_index_code;
     private final boolean field_3_hasMultibyte;
     private final String field_4_formatstring;
 
     private FormatRecord(FormatRecord other) {
+        super(other);
         field_1_index_code = other.field_1_index_code;
         field_3_hasMultibyte = other.field_3_hasMultibyte;
         field_4_formatstring = other.field_4_formatstring;
     }
-    
+
     public FormatRecord(int indexCode, String fs) {
         field_1_index_code = indexCode;
         field_4_formatstring = fs;
@@ -114,9 +113,17 @@ public final class FormatRecord extends StandardRecord implements Cloneable {
     public short getSid() {
         return sid;
     }
-    
+
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public FormatRecord clone() {
+        return copy();
+    }
+
+    @Override
+    public FormatRecord copy() {
         return new FormatRecord(this);
     }
 

src/java/org/apache/poi/hssf/record/FormulaRecord.java

@@ -18,168 +18,28 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.ss.formula.Formula;
-import org.apache.poi.ss.formula.eval.ErrorEval;
 import org.apache.poi.ss.formula.ptg.Ptg;
 import org.apache.poi.ss.usermodel.CellType;
-import org.apache.poi.util.*;
+import org.apache.poi.util.BitField;
+import org.apache.poi.util.BitFieldFactory;
+import org.apache.poi.util.HexDump;
+import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
  * Formula Record (0x0006).
- * REFERENCE:  PG 317/444 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author Jason Height (jheight at chariot dot net dot au)
  */
-public final class FormulaRecord extends CellRecord implements Cloneable {
+public final class FormulaRecord extends CellRecord {
 
-	public static final short sid = 0x0006;   // docs say 406...because of a bug Microsoft support site article #Q184647)
-	private static int FIXED_SIZE = 14; // double + short + int
+	// docs say 406...because of a bug Microsoft support site article #Q184647)
+	public static final short sid = 0x0006;
+	// double + short + int
+	private static final int FIXED_SIZE = 14;
 
 	private static final BitField alwaysCalc = BitFieldFactory.getInstance(0x0001);
 	private static final BitField calcOnLoad = BitFieldFactory.getInstance(0x0002);
 	private static final BitField sharedFormula = BitFieldFactory.getInstance(0x0008);
 
-	/**
-	 * Manages the cached formula result values of other types besides numeric.
-	 * Excel encodes the same 8 bytes that would be field_4_value with various NaN
-	 * values that are decoded/encoded by this class. 
-	 */
-	static final class SpecialCachedValue {
-		/** deliberately chosen by Excel in order to encode other values within Double NaNs */
-		private static final long BIT_MARKER = 0xFFFF000000000000L;
-		private static final int VARIABLE_DATA_LENGTH = 6;
-		private static final int DATA_INDEX = 2;
-
-		// FIXME: can these be merged with {@link CellType}?
-		// are the numbers specific to the HSSF formula record format or just a poor-man's enum?
-		public static final int STRING = 0;
-		public static final int BOOLEAN = 1;
-		public static final int ERROR_CODE = 2;
-		public static final int EMPTY = 3;
-
-		private final byte[] _variableData;
-
-		private SpecialCachedValue(byte[] data) {
-			_variableData = data;
-		}
-
-		public int getTypeCode() {
-			return _variableData[0];
-		}
-
-		/**
-		 * @return <code>null</code> if the double value encoded by <tt>valueLongBits</tt> 
-		 * is a normal (non NaN) double value.
-		 */
-		public static SpecialCachedValue create(long valueLongBits) {
-			if ((BIT_MARKER & valueLongBits) != BIT_MARKER) {
-				return null;
-			}
-
-			byte[] result = new byte[VARIABLE_DATA_LENGTH];
-			long x = valueLongBits;
-			for (int i=0; i<VARIABLE_DATA_LENGTH; i++) {
-				result[i] = (byte) x;
-				x >>= 8;
-			}
-			switch (result[0]) {
-				case STRING:
-				case BOOLEAN:
-				case ERROR_CODE:
-				case EMPTY:
-					break;
-				default:
-					throw new org.apache.poi.util.RecordFormatException("Bad special value code (" + result[0] + ")");
-			}
-			return new SpecialCachedValue(result);
-		}
-
-		public void serialize(LittleEndianOutput out) {
-			out.write(_variableData);
-			out.writeShort(0xFFFF);
-		}
-
-		public String formatDebugString() {
-			return formatValue() + ' ' + HexDump.toHex(_variableData);
-		}
-
-		private String formatValue() {
-			int typeCode = getTypeCode();
-			switch (typeCode) {
-				case STRING:
-					return "<string>";
-				case BOOLEAN:
-					return getDataValue() == 0 ? "FALSE" : "TRUE";
-				case ERROR_CODE:
-					return ErrorEval.getText(getDataValue());
-				case EMPTY:
-					return "<empty>";
-			}
-			return "#error(type=" + typeCode + ")#";
-		}
-
-		private int getDataValue() {
-			return _variableData[DATA_INDEX];
-		}
-
-		public static SpecialCachedValue createCachedEmptyValue() {
-			return create(EMPTY, 0);
-		}
-
-		public static SpecialCachedValue createForString() {
-			return create(STRING, 0);
-		}
-
-		public static SpecialCachedValue createCachedBoolean(boolean b) {
-			return create(BOOLEAN, b ? 1 : 0);
-		}
-
-		public static SpecialCachedValue createCachedErrorCode(int errorCode) {
-			return create(ERROR_CODE, errorCode);
-		}
-
-		private static SpecialCachedValue create(int code, int data) {
-			byte[] vd = {
-					(byte) code,
-					0,
-					(byte) data,
-					0,
-					0,
-					0,
-			};
-			return new SpecialCachedValue(vd);
-		}
-
-		@Override
-        public String toString() {
-			return getClass().getName() + '[' + formatValue() + ']';
-		}
-
-		public int getValueType() {
-			int typeCode = getTypeCode();
-			switch (typeCode) {
-				case STRING:	 return CellType.STRING.getCode();
-				case BOOLEAN:	return CellType.BOOLEAN.getCode();
-				case ERROR_CODE: return CellType.ERROR.getCode();
-				case EMPTY:	  return CellType.STRING.getCode(); // is this correct?
-			}
-			throw new IllegalStateException("Unexpected type id (" + typeCode + ")");
-		}
-
-		public boolean getBooleanValue() {
-			if (getTypeCode() != BOOLEAN) {
-				throw new IllegalStateException("Not a boolean cached value - " + formatValue());
-			}
-			return getDataValue() != 0;
-		}
-
-		public int getErrorValue() {
-			if (getTypeCode() != ERROR_CODE) {
-				throw new IllegalStateException("Not an error cached value - " + formatValue());
-			}
-			return getDataValue();
-		}
-	}
-
 	private double field_4_value;
 	private short  field_5_options;
 	/**
@@ -193,19 +53,27 @@ public final class FormulaRecord extends CellRecord implements Cloneable {
 	/**
 	 * Since the NaN support seems sketchy (different constants) we'll store and spit it out directly
 	 */
-	private SpecialCachedValue specialCachedValue;
+	private FormulaSpecialCachedValue specialCachedValue;
 
 	/** Creates new FormulaRecord */
-
 	public FormulaRecord() {
 		field_8_parsed_expr = Formula.create(Ptg.EMPTY_PTG_ARRAY);
 	}
 
+	public FormulaRecord(FormulaRecord other) {
+		super(other);
+		field_4_value = other.field_4_value;
+		field_5_options = other.field_5_options;
+		field_6_zero = other.field_6_zero;
+		field_8_parsed_expr = (other.field_8_parsed_expr == null) ? null : new Formula(other.field_8_parsed_expr);
+		specialCachedValue = (other.specialCachedValue == null) ? null : new FormulaSpecialCachedValue(other.specialCachedValue);
+	}
+
 	public FormulaRecord(RecordInputStream ris) {
 		super(ris);
 		long valueLongBits  = ris.readLong();
 		field_5_options = ris.readShort();
-		specialCachedValue = SpecialCachedValue.create(valueLongBits);
+		specialCachedValue = FormulaSpecialCachedValue.create(valueLongBits);
 		if (specialCachedValue == null) {
 			field_4_value = Double.longBitsToDouble(valueLongBits);
 		}
@@ -228,16 +96,16 @@ public final class FormulaRecord extends CellRecord implements Cloneable {
 	}
 
 	public void setCachedResultTypeEmptyString() {
-		specialCachedValue = SpecialCachedValue.createCachedEmptyValue();
+		specialCachedValue = FormulaSpecialCachedValue.createCachedEmptyValue();
 	}
 	public void setCachedResultTypeString() {
-		specialCachedValue = SpecialCachedValue.createForString();
+		specialCachedValue = FormulaSpecialCachedValue.createForString();
 	}
 	public void setCachedResultErrorCode(int errorCode) {
-		specialCachedValue = SpecialCachedValue.createCachedErrorCode(errorCode);
+		specialCachedValue = FormulaSpecialCachedValue.createCachedErrorCode(errorCode);
 	}
 	public void setCachedResultBoolean(boolean value) {
-		specialCachedValue = SpecialCachedValue.createCachedBoolean(value);
+		specialCachedValue = FormulaSpecialCachedValue.createCachedBoolean(value);
 	}
 	/**
 	 * @return <code>true</code> if this {@link FormulaRecord} is followed by a
@@ -246,7 +114,7 @@ public final class FormulaRecord extends CellRecord implements Cloneable {
 	 */
 	public boolean hasCachedResultString() {
 		return specialCachedValue != null &&
-				specialCachedValue.getTypeCode() == SpecialCachedValue.STRING;
+				specialCachedValue.getTypeCode() == FormulaSpecialCachedValue.STRING;
 	}
 
 	public int getCachedResultType() {
@@ -353,12 +221,12 @@ public final class FormulaRecord extends CellRecord implements Cloneable {
 		out.writeInt(field_6_zero); // may as well write original data back so as to minimise differences from original
 		field_8_parsed_expr.serialize(out);
 	}
-	
+
 	@Override
 	protected String getRecordName() {
 		return "FORMULA";
 	}
-	
+
 	@Override
 	protected void appendValueText(StringBuilder sb) {
 		sb.append("  .value	 = ");
@@ -385,15 +253,16 @@ public final class FormulaRecord extends CellRecord implements Cloneable {
 	}
 
 	@Override
-    public FormulaRecord clone() {
-		FormulaRecord rec = new FormulaRecord();
-		copyBaseFields(rec);
-		rec.field_4_value = field_4_value;
-		rec.field_5_options = field_5_options;
-		rec.field_6_zero = field_6_zero;
-		rec.field_8_parsed_expr = field_8_parsed_expr;
-		rec.specialCachedValue = specialCachedValue;
-		return rec;
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
+	public FormulaRecord clone() {
+		return copy();
+	}
+
+	@Override
+	public FormulaRecord copy() {
+		return new FormulaRecord(this);
 	}
 }
 

src/java/org/apache/poi/hssf/record/FormulaSpecialCachedValue.java

@@ -0,0 +1,167 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You under the Apache License, Version 2.0
+   (the "License"); you may not use this file except in compliance with
+   the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+==================================================================== */
+
+package org.apache.poi.hssf.record;
+
+import org.apache.poi.ss.formula.eval.ErrorEval;
+import org.apache.poi.ss.usermodel.CellType;
+import org.apache.poi.util.HexDump;
+import org.apache.poi.util.Internal;
+import org.apache.poi.util.LittleEndianOutput;
+
+/**
+ * Manages the cached formula result values of other types besides numeric.
+ * Excel encodes the same 8 bytes that would be field_4_value with various NaN
+ * values that are decoded/encoded by this class.
+ */
+@Internal
+public final class FormulaSpecialCachedValue {
+    /** deliberately chosen by Excel in order to encode other values within Double NaNs */
+    private static final long BIT_MARKER = 0xFFFF000000000000L;
+    private static final int VARIABLE_DATA_LENGTH = 6;
+    private static final int DATA_INDEX = 2;
+
+    // FIXME: can these be merged with {@link CellType}?
+    // are the numbers specific to the HSSF formula record format or just a poor-man's enum?
+    public static final int STRING = 0;
+    public static final int BOOLEAN = 1;
+    public static final int ERROR_CODE = 2;
+    public static final int EMPTY = 3;
+
+    private final byte[] _variableData;
+
+    FormulaSpecialCachedValue(FormulaSpecialCachedValue other) {
+        _variableData = (other._variableData == null) ? null : other._variableData.clone();
+    }
+
+    private FormulaSpecialCachedValue(byte[] data) {
+        _variableData = data;
+    }
+
+    public int getTypeCode() {
+        return _variableData[0];
+    }
+
+    /**
+     * @return <code>null</code> if the double value encoded by <tt>valueLongBits</tt>
+     * is a normal (non NaN) double value.
+     */
+    public static FormulaSpecialCachedValue create(long valueLongBits) {
+        if ((BIT_MARKER & valueLongBits) != BIT_MARKER) {
+            return null;
+        }
+
+        byte[] result = new byte[VARIABLE_DATA_LENGTH];
+        long x = valueLongBits;
+        for (int i=0; i<VARIABLE_DATA_LENGTH; i++) {
+            result[i] = (byte) x;
+            x >>= 8;
+        }
+        switch (result[0]) {
+            case STRING:
+            case BOOLEAN:
+            case ERROR_CODE:
+            case EMPTY:
+                break;
+            default:
+                throw new org.apache.poi.util.RecordFormatException("Bad special value code (" + result[0] + ")");
+        }
+        return new FormulaSpecialCachedValue(result);
+    }
+
+    public void serialize(LittleEndianOutput out) {
+        out.write(_variableData);
+        out.writeShort(0xFFFF);
+    }
+
+    public String formatDebugString() {
+        return formatValue() + ' ' + HexDump.toHex(_variableData);
+    }
+
+    private String formatValue() {
+        int typeCode = getTypeCode();
+        switch (typeCode) {
+            case STRING:
+                return "<string>";
+            case BOOLEAN:
+                return getDataValue() == 0 ? "FALSE" : "TRUE";
+            case ERROR_CODE:
+                return ErrorEval.getText(getDataValue());
+            case EMPTY:
+                return "<empty>";
+        }
+        return "#error(type=" + typeCode + ")#";
+    }
+
+    private int getDataValue() {
+        return _variableData[DATA_INDEX];
+    }
+
+    public static FormulaSpecialCachedValue createCachedEmptyValue() {
+        return create(EMPTY, 0);
+    }
+
+    public static FormulaSpecialCachedValue createForString() {
+        return create(STRING, 0);
+    }
+
+    public static FormulaSpecialCachedValue createCachedBoolean(boolean b) {
+        return create(BOOLEAN, b ? 1 : 0);
+    }
+
+    public static FormulaSpecialCachedValue createCachedErrorCode(int errorCode) {
+        return create(ERROR_CODE, errorCode);
+    }
+
+    private static FormulaSpecialCachedValue create(int code, int data) {
+        byte[] vd = { (byte) code, 0, (byte) data, 0, 0, 0, };
+        return new FormulaSpecialCachedValue(vd);
+    }
+
+    @Override
+    public String toString() {
+        return getClass().getName() + '[' + formatValue() + ']';
+    }
+
+    public int getValueType() {
+        int typeCode = getTypeCode();
+        switch (typeCode) {
+            case EMPTY: // is this correct?
+            case STRING:
+                return CellType.STRING.getCode();
+            case BOOLEAN:
+                return CellType.BOOLEAN.getCode();
+            case ERROR_CODE:
+                return CellType.ERROR.getCode();
+        }
+        throw new IllegalStateException("Unexpected type id (" + typeCode + ")");
+    }
+
+    public boolean getBooleanValue() {
+        if (getTypeCode() != BOOLEAN) {
+            throw new IllegalStateException("Not a boolean cached value - " + formatValue());
+        }
+        return getDataValue() != 0;
+    }
+
+    public int getErrorValue() {
+        if (getTypeCode() != ERROR_CODE) {
+            throw new IllegalStateException("Not an error cached value - " + formatValue());
+        }
+        return getDataValue();
+    }
+}

src/java/org/apache/poi/hssf/record/FtCblsSubRecord.java

@@ -22,28 +22,31 @@ import org.apache.poi.util.IOUtils;
 import org.apache.poi.util.LittleEndianInput;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.RecordFormatException;
+import org.apache.poi.util.Removal;
 
 
 /**
  * This structure appears as part of an Obj record that represents a checkbox or radio button.
- *
- * @author Yegor Kozlov
  */
-public final class FtCblsSubRecord extends SubRecord implements Cloneable {
-    public final static short sid = 0x0C;
+public final class FtCblsSubRecord extends SubRecord {
+    public static final short sid = 0x0C;
     private static final int ENCODED_SIZE = 20;
 
-    private byte[] reserved;
+    private final byte[] reserved;
 
     /**
      * Construct a new <code>FtCblsSubRecord</code> and
      * fill its data with the default values
      */
-    public FtCblsSubRecord()
-    {
+    public FtCblsSubRecord() {
         reserved = new byte[ENCODED_SIZE];
     }
 
+    public FtCblsSubRecord(FtCblsSubRecord other) {
+        super(other);
+        reserved = other.reserved.clone();
+    }
+
     public FtCblsSubRecord(LittleEndianInput in, int size) {
         if (size != ENCODED_SIZE) {
             throw new RecordFormatException("Unexpected size (" + size + ")");
@@ -93,12 +96,16 @@ public final class FtCblsSubRecord extends SubRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public FtCblsSubRecord clone() {
-        FtCblsSubRecord rec = new FtCblsSubRecord();
-        byte[] recdata = new byte[reserved.length];
-        System.arraycopy(reserved, 0, recdata, 0, recdata.length);
-        rec.reserved = recdata;
-        return rec;
+        return copy();
+    }
+
+    @Override
+    public FtCblsSubRecord copy() {
+        return new FtCblsSubRecord(this);
     }
 
 }

src/java/org/apache/poi/hssf/record/FtCfSubRecord.java

@@ -21,15 +21,16 @@ import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianInput;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.RecordFormatException;
+import org.apache.poi.util.Removal;
 
 
 /**
  * The FtCf structure specifies the clipboard format of the picture-type Obj record containing this FtCf.
  */
-public final class FtCfSubRecord extends SubRecord implements Cloneable {
-    public final static short sid = 0x07;
-    public final static short length = 0x02;
-    
+public final class FtCfSubRecord extends SubRecord {
+    public static final short sid = 0x07;
+    public static final short length = 0x02;
+
     /**
      * Specifies the format of the picture is an enhanced metafile.
      */
@@ -39,20 +40,24 @@ public final class FtCfSubRecord extends SubRecord implements Cloneable {
      * Specifies the format of the picture is a bitmap.
      */
     public static final short BITMAP_BIT      = (short)0x0009;
-    
+
     /**
      * Specifies the picture is in an unspecified format that is
      * neither and enhanced metafile nor a bitmap.
      */
     public static final short UNSPECIFIED_BIT = (short)0xFFFF;
-    
+
     private short flags;
 
     /**
      * Construct a new <code>FtPioGrbitSubRecord</code> and
      * fill its data with the default values
      */
-    public FtCfSubRecord() {
+    public FtCfSubRecord() {}
+
+    public FtCfSubRecord(FtCfSubRecord other) {
+        super(other);
+        flags = other.flags;
     }
 
     public FtCfSubRecord(LittleEndianInput in, int size) {
@@ -99,10 +104,16 @@ public final class FtCfSubRecord extends SubRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public FtCfSubRecord clone() {
-        FtCfSubRecord rec = new FtCfSubRecord();
-        rec.flags = this.flags;
-        return rec;
+        return copy();
+    }
+
+    @Override
+    public FtCfSubRecord copy() {
+        return new FtCfSubRecord(this);
     }
 
  public short getFlags() {

src/java/org/apache/poi/hssf/record/FtPioGrbitSubRecord.java

@@ -21,27 +21,28 @@ import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianInput;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.RecordFormatException;
+import org.apache.poi.util.Removal;
 
 
 /**
  * This structure appears as part of an Obj record that represents image display properties.
  */
-public final class FtPioGrbitSubRecord extends SubRecord implements Cloneable {
-    public final static short sid = 0x08;
-    public final static short length = 0x02;
-    
+public final class FtPioGrbitSubRecord extends SubRecord {
+    public static final short sid = 0x08;
+    public static final short length = 0x02;
+
     /**
-     * A bit that specifies whether the picture's aspect ratio is preserved when rendered in 
+     * A bit that specifies whether the picture's aspect ratio is preserved when rendered in
      * different views (Normal view, Page Break Preview view, Page Layout view and printing).
      */
     public static final int AUTO_PICT_BIT    = 1 << 0;
 
     /**
-     * A bit that specifies whether the pictFmla field of the Obj record that contains 
+     * A bit that specifies whether the pictFmla field of the Obj record that contains
      * this FtPioGrbit specifies a DDE reference.
      */
     public static final int DDE_BIT          = 1 << 1;
-    
+
     /**
      * A bit that specifies whether this object is expected to be updated on print to
      * reflect the values in the cell associated with the object.
@@ -52,44 +53,48 @@ public final class FtPioGrbitSubRecord extends SubRecord implements Cloneable {
      * A bit that specifies whether the picture is displayed as an icon.
      */
     public static final int ICON_BIT         = 1 << 3;
-    
+
     /**
      * A bit that specifies whether this object is an ActiveX control.
      * It MUST NOT be the case that both fCtl and fDde are equal to 1.
      */
     public static final int CTL_BIT          = 1 << 4;
-    
+
     /**
      * A bit that specifies whether the object data are stored in an
      * embedding storage (= 0) or in the controls stream (ctls) (= 1).
      */
     public static final int PRSTM_BIT        = 1 << 5;
-    
+
     /**
      * A bit that specifies whether this is a camera picture.
      */
     public static final int CAMERA_BIT       = 1 << 7;
-    
+
     /**
      * A bit that specifies whether this picture's size has been explicitly set.
      * 0 = picture size has been explicitly set, 1 = has not been set
      */
     public static final int DEFAULT_SIZE_BIT = 1 << 8;
-    
+
     /**
      * A bit that specifies whether the OLE server for the object is called
      * to load the object's data automatically when the parent workbook is opened.
      */
     public static final int AUTO_LOAD_BIT    = 1 << 9;
 
-    
+
     private short flags;
 
     /**
      * Construct a new <code>FtPioGrbitSubRecord</code> and
      * fill its data with the default values
      */
-    public FtPioGrbitSubRecord() {
+    public FtPioGrbitSubRecord() {}
+
+    public FtPioGrbitSubRecord(FtPioGrbitSubRecord other) {
+        super(other);
+        flags = other.flags;
     }
 
     public FtPioGrbitSubRecord(LittleEndianInput in, int size) {
@@ -110,12 +115,12 @@ public final class FtPioGrbitSubRecord extends SubRecord implements Cloneable {
         } else {
             flags &= (0xFFFF ^ bitmask);
         }
-    }    
-    
+    }
+
     public boolean getFlagByBit(int bitmask) {
         return ((flags & bitmask) != 0);
     }
-    
+
     /**
      * Convert this record to string.
      * Used by BiffViewer and other utilities.
@@ -153,10 +158,16 @@ public final class FtPioGrbitSubRecord extends SubRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public FtPioGrbitSubRecord clone() {
-        FtPioGrbitSubRecord rec = new FtPioGrbitSubRecord();
-        rec.flags = this.flags;
-        return rec;
+        return copy();
+    }
+
+    @Override
+    public FtPioGrbitSubRecord copy() {
+        return new FtPioGrbitSubRecord(this);
     }
 
  public short getFlags() {

src/java/org/apache/poi/hssf/record/GridsetRecord.java

@@ -18,28 +18,25 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Gridset Record.<P>
- * Description:  flag denoting whether the user specified that gridlines are used when
- *               printing.<P>
- * REFERENCE:  PG 320 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- *
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author  Glen Stampoultzis (glens at apache.org)
- * @author Jason Height (jheight at chariot dot net dot au)
+ * Flag denoting whether the user specified that gridlines are used when printing.
  *
  * @version 2.0-pre
  */
-public final class GridsetRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x82;
+public final class GridsetRecord extends StandardRecord {
+    public static final short sid = 0x82;
     public short              field_1_gridset_flag;
 
-    public GridsetRecord() {
+    public GridsetRecord() {}
+
+    public GridsetRecord(GridsetRecord other) {
+        super(other);
+        field_1_gridset_flag = other.field_1_gridset_flag;
     }
 
-    public GridsetRecord(RecordInputStream in)
-    {
+    public GridsetRecord(RecordInputStream in) {
         field_1_gridset_flag = in.readShort();
     }
 
@@ -87,9 +84,15 @@ public final class GridsetRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public GridsetRecord clone() {
-      GridsetRecord rec = new GridsetRecord();
-      rec.field_1_gridset_flag = field_1_gridset_flag;
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public GridsetRecord copy() {
+        return new GridsetRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/GroupMarkerSubRecord.java

@@ -21,13 +21,14 @@ import org.apache.poi.util.HexDump;
 import org.apache.poi.util.IOUtils;
 import org.apache.poi.util.LittleEndianInput;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
  * ftGmo (0x0006)<p>
  * The group marker record is used as a position holder for groups.
  */
-public final class GroupMarkerSubRecord extends SubRecord implements Cloneable {
-    public final static short sid = 0x0006;
+public final class GroupMarkerSubRecord extends SubRecord {
+    public static final short sid = 0x0006;
     //arbitrarily selected; may need to increase
     private static final int MAX_RECORD_LENGTH = 100_000;
 
@@ -41,6 +42,11 @@ public final class GroupMarkerSubRecord extends SubRecord implements Cloneable {
         reserved = EMPTY_BYTE_ARRAY;
     }
 
+    public GroupMarkerSubRecord(GroupMarkerSubRecord other) {
+        super(other);
+        reserved = other.reserved.clone();
+    }
+
     public GroupMarkerSubRecord(LittleEndianInput in, int size) {
         byte[] buf = IOUtils.safelyAllocate(size, MAX_RECORD_LENGTH);
         in.readFully(buf);
@@ -74,10 +80,15 @@ public final class GroupMarkerSubRecord extends SubRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public GroupMarkerSubRecord clone() {
-        GroupMarkerSubRecord rec = new GroupMarkerSubRecord();
-        rec.reserved = new byte[reserved.length];
-        System.arraycopy(reserved, 0, rec.reserved, 0, reserved.length);
-        return rec;
+        return copy();
+    }
+
+    @Override
+    public GroupMarkerSubRecord copy() {
+        return new GroupMarkerSubRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/GutsRecord.java

@@ -15,34 +15,41 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Guts Record <P>
- * Description:  Row/column gutter sizes <P>
- * REFERENCE:  PG 320 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author Jason Height (jheight at chariot dot net dot au)
+ * Row/column gutter sizes
+ *
  * @version 2.0-pre
  */
 
-public final class GutsRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x80;
-    private short             field_1_left_row_gutter;   // size of the row gutter to the left of the rows
-    private short             field_2_top_col_gutter;    // size of the column gutter above the columns
-    private short             field_3_row_level_max;     // maximum outline level for row gutters
-    private short             field_4_col_level_max;     // maximum outline level for column gutters
-
-    public GutsRecord()
-    {
+public final class GutsRecord extends StandardRecord {
+    public static final short sid = 0x80;
+    /** size of the row gutter to the left of the rows */
+    private short field_1_left_row_gutter;
+    /** size of the column gutter above the columns */
+    private short field_2_top_col_gutter;
+    /** maximum outline level for row gutters */
+    private short field_3_row_level_max;
+    /** maximum outline level for column gutters */
+    private short field_4_col_level_max;
+
+    public GutsRecord() {}
+
+    public GutsRecord(GutsRecord other) {
+        super(other);
+        field_1_left_row_gutter = other.field_1_left_row_gutter;
+        field_2_top_col_gutter  = other.field_2_top_col_gutter;
+        field_3_row_level_max   = other.field_3_row_level_max;
+        field_4_col_level_max   = other.field_4_col_level_max;
     }
 
-    public GutsRecord(RecordInputStream in)
-    {
+    public GutsRecord(RecordInputStream in) {
         field_1_left_row_gutter = in.readShort();
         field_2_top_col_gutter  = in.readShort();
         field_3_row_level_max   = in.readShort();
@@ -171,12 +178,15 @@ public final class GutsRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public GutsRecord clone() {
-      GutsRecord rec = new GutsRecord();
-      rec.field_1_left_row_gutter = field_1_left_row_gutter;
-      rec.field_2_top_col_gutter = field_2_top_col_gutter;
-      rec.field_3_row_level_max = field_3_row_level_max;
-      rec.field_4_col_level_max = field_4_col_level_max;
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public GutsRecord copy() {
+      return new GutsRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/HCenterRecord.java

@@ -17,24 +17,25 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        HCenter record (0x0083)<P>
- * Description:  whether to center between horizontal margins<P>
- * REFERENCE:  PG 320 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author Jason Height (jheight at chariot dot net dot au)
+ * Whether to center between horizontal margins
+ *
  * @version 2.0-pre
  */
-public final class HCenterRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x0083;
-    private short             field_1_hcenter;
+public final class HCenterRecord extends StandardRecord {
+    public static final short sid = 0x0083;
+    private short field_1_hcenter;
 
-    public HCenterRecord() {
+    public HCenterRecord() {}
+
+    public HCenterRecord(HCenterRecord other) {
+        super(other);
+        field_1_hcenter = other.field_1_hcenter;
     }
 
-    public HCenterRecord(RecordInputStream in)
-    {
+    public HCenterRecord(RecordInputStream in) {
         field_1_hcenter = in.readShort();
     }
 
@@ -43,11 +44,7 @@ public final class HCenterRecord extends StandardRecord implements Cloneable {
      * @param hc  center - t/f
      */
     public void setHCenter(boolean hc) {
-        if (hc) {
-            field_1_hcenter = 1;
-        } else {
-            field_1_hcenter = 0;
-        }
+        field_1_hcenter = (short)(hc ? 1 : 0);
     }
 
     /**
@@ -80,9 +77,15 @@ public final class HCenterRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public HCenterRecord clone() {
-      HCenterRecord rec = new HCenterRecord();
-      rec.field_1_hcenter = field_1_hcenter;
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public HCenterRecord copy() {
+      return new HCenterRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/HeaderFooterBase.java

@@ -22,8 +22,6 @@ import org.apache.poi.util.StringUtil;
 
 /**
  * Common header/footer base class
- *
- * @author Josh Micich
  */
 public abstract class HeaderFooterBase extends StandardRecord {
 	private boolean field_2_hasMultibyte;
@@ -33,6 +31,12 @@ public abstract class HeaderFooterBase extends StandardRecord {
 		setText(text);
 	}
 
+	protected HeaderFooterBase(HeaderFooterBase other) {
+		super(other);
+		field_2_hasMultibyte = other.field_2_hasMultibyte;
+		field_3_text = other.field_3_text;
+	}
+
 	protected HeaderFooterBase(RecordInputStream in) {
 		if (in.remaining() > 0) {
 			int field_1_footer_len = in.readShort();
@@ -107,4 +111,7 @@ public abstract class HeaderFooterBase extends StandardRecord {
 		}
 		return 3 + getTextLength() * (field_2_hasMultibyte ? 2 : 1);
 	}
+
+	@Override
+	public abstract HeaderFooterBase copy();
 }

src/java/org/apache/poi/hssf/record/HeaderFooterRecord.java

@@ -17,28 +17,31 @@
 
 package org.apache.poi.hssf.record;
 
-import org.apache.poi.util.HexDump;
-import org.apache.poi.util.LittleEndianOutput;
-
 import java.util.Arrays;
 import java.util.Locale;
 
+import org.apache.poi.util.HexDump;
+import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
+
 /**
  * The HEADERFOOTER record stores information added in Office Excel 2007 for headers/footers.
- *
- * @author Yegor Kozlov
  */
-public final class HeaderFooterRecord extends StandardRecord implements Cloneable {
-
+public final class HeaderFooterRecord extends StandardRecord {
+    public static final short sid = 0x089C;
     private static final byte[] BLANK_GUID = new byte[16];
 
-    public final static short sid = 0x089C;
 	private byte[] _rawData;
 
     public HeaderFooterRecord(byte[] data) {
         _rawData = data;
     }
 
+    public HeaderFooterRecord(HeaderFooterRecord other) {
+        super(other);
+        _rawData = (other._rawData == null) ? null : other._rawData.clone();
+    }
+
 	/**
 	 * construct a HeaderFooterRecord record.  No fields are interpreted and the record will
 	 * be serialized in its original form more or less
@@ -58,7 +61,7 @@ public final class HeaderFooterRecord extends StandardRecord implements Cloneabl
 	protected int getDataSize() {
 		return _rawData.length;
 	}
-    
+
     public short getSid()
     {
         return sid;
@@ -79,7 +82,7 @@ public final class HeaderFooterRecord extends StandardRecord implements Cloneabl
     }
 
     /**
-     * @return whether this record belongs to the current sheet 
+     * @return whether this record belongs to the current sheet
      */
     public boolean isCurrentSheet(){
         return Arrays.equals(getGuid(), BLANK_GUID);
@@ -96,10 +99,17 @@ public final class HeaderFooterRecord extends StandardRecord implements Cloneabl
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public HeaderFooterRecord clone() {
-        //HACK: do a "cheat" clone, see Record.java for more information
-        return (HeaderFooterRecord)cloneViaReserialise();
+        return copy();
     }
-    
- 
+
+    @Override
+    public HeaderFooterRecord copy() {
+        return new HeaderFooterRecord(this);
+    }
+
+
 }

src/java/org/apache/poi/hssf/record/HeaderRecord.java

@@ -17,21 +17,22 @@
 
 package org.apache.poi.hssf.record;
 
+import org.apache.poi.util.Removal;
+
 /**
- * Title:        Header Record<P>
- * Description:  Specifies a header for a sheet<P>
- * REFERENCE:  PG 321 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author Shawn Laubach (slaubach at apache dot org) Modified 3/14/02
- * @author Jason Height (jheight at chariot dot net dot au)
+ * Specifies a header for a sheet
  */
-public final class HeaderRecord extends HeaderFooterBase implements Cloneable {
-	public final static short sid = 0x0014;
+public final class HeaderRecord extends HeaderFooterBase {
+	public static final short sid = 0x0014;
 
 	public HeaderRecord(String text) {
 		super(text);
 	}
 
+	public HeaderRecord(HeaderRecord other) {
+		super(other);
+	}
+
 	public HeaderRecord(RecordInputStream in) {
 		super(in);
 	}
@@ -50,7 +51,15 @@ public final class HeaderRecord extends HeaderFooterBase implements Cloneable {
 	}
 
 	@Override
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
 	public HeaderRecord clone() {
-		return new HeaderRecord(getText());
+		return copy();
+	}
+
+	@Override
+	public HeaderRecord copy() {
+		return new HeaderRecord(this);
 	}
 }

src/java/org/apache/poi/hssf/record/HideObjRecord.java

@@ -15,35 +15,33 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Title:        Hide Object Record<P>
- * Description:  flag defines whether to hide placeholders and object<P>
- * REFERENCE:  PG 321 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
+ * Flag defines whether to hide placeholders and object
+ *
  * @version 2.0-pre
  */
+public final class HideObjRecord extends StandardRecord {
+    public static final short sid               = 0x8d;
+    public static final short HIDE_ALL          = 2;
+    public static final short SHOW_PLACEHOLDERS = 1;
+    public static final short SHOW_ALL          = 0;
 
-public final class HideObjRecord
-    extends StandardRecord
-{
-    public final static short sid               = 0x8d;
-    public final static short HIDE_ALL          = 2;
-    public final static short SHOW_PLACEHOLDERS = 1;
-    public final static short SHOW_ALL          = 0;
-    private short             field_1_hide_obj;
+    private short field_1_hide_obj;
 
-    public HideObjRecord()
-    {
+    public HideObjRecord() {}
+
+    public HideObjRecord(HideObjRecord other) {
+        super(other);
+        field_1_hide_obj = other.field_1_hide_obj;
     }
 
-    public HideObjRecord(RecordInputStream in)
-    {
+    public HideObjRecord(RecordInputStream in) {
         field_1_hide_obj = in.readShort();
     }
 
@@ -98,4 +96,9 @@ public final class HideObjRecord
     {
         return sid;
     }
+
+    @Override
+    public HideObjRecord copy() {
+        return new HideObjRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/HorizontalPageBreakRecord.java

@@ -17,21 +17,24 @@
 
 package org.apache.poi.hssf.record;
 
-import java.util.Iterator;
+import org.apache.poi.util.Removal;
 
 /**
  * HorizontalPageBreak (0x001B) record that stores page breaks at rows
- * 
+ *
  * @see PageBreakRecord
  */
-public final class HorizontalPageBreakRecord extends PageBreakRecord implements Cloneable {
+public final class HorizontalPageBreakRecord extends PageBreakRecord {
 
 	public static final short sid = 0x001B;
 
 	/**
 	 * Creates an empty horizontal page break record
 	 */
-	public HorizontalPageBreakRecord() {
+	public HorizontalPageBreakRecord() {}
+
+	public HorizontalPageBreakRecord(HorizontalPageBreakRecord other) {
+		super(other);
 	}
 
 	/**
@@ -46,13 +49,15 @@ public final class HorizontalPageBreakRecord extends PageBreakRecord implements
 	}
 
 	@Override
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
 	public PageBreakRecord clone() {
-		PageBreakRecord result = new HorizontalPageBreakRecord();
-		Iterator<Break> iterator = getBreaksIterator();
-		while (iterator.hasNext()) {
-			Break original = iterator.next();
-			result.addBreak(original.main, original.subFrom, original.subTo);
-		}
-		return result;
+		return copy();
+	}
+
+	@Override
+	public HorizontalPageBreakRecord copy() {
+		return new HorizontalPageBreakRecord(this);
 	}
 }

src/java/org/apache/poi/hssf/record/HyperlinkRecord.java

@@ -27,6 +27,7 @@ import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.POILogFactory;
 import org.apache.poi.util.POILogger;
 import org.apache.poi.util.RecordFormatException;
+import org.apache.poi.util.Removal;
 import org.apache.poi.util.StringUtil;
 
 /**
@@ -34,13 +35,14 @@ import org.apache.poi.util.StringUtil;
  *  from the Excel-97 format.
  * Supports only external links for now (eg http://)
  */
-public final class HyperlinkRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x01B8;
+public final class HyperlinkRecord extends StandardRecord {
+    public static final short sid = 0x01B8;
     private static POILogger logger = POILogFactory.getLogger(HyperlinkRecord.class);
     //arbitrarily selected; may need to increase
     private static final int MAX_RECORD_LENGTH = 100_000;
 
 
+    // TODO: replace with ClassID
     static final class GUID {
         /*
          * this class is currently only used here, but could be moved to a
@@ -61,6 +63,13 @@ public final class HyperlinkRecord extends StandardRecord implements Cloneable {
          */
         private final long _d4;
 
+        public GUID(GUID other) {
+            _d1 = other._d1;
+            _d2 = other._d2;
+            _d3 = other._d3;
+            _d4 = other._d4;
+        }
+
         public GUID(LittleEndianInput in) {
             this(in.readInt(), in.readUShort(), in.readUShort(), in.readLong());
         }
@@ -199,24 +208,24 @@ public final class HyperlinkRecord extends StandardRecord implements Cloneable {
         }
     }
 
-    /**
+    /*
      * Link flags
      */
-     static final int  HLINK_URL    = 0x01;  // File link or URL.
-     static final int  HLINK_ABS    = 0x02;  // Absolute path.
-     static final int  HLINK_LABEL  = 0x14;  // Has label/description.
+    static final int HLINK_URL    = 0x01;  // File link or URL.
+    static final int HLINK_ABS    = 0x02;  // Absolute path.
+    static final int HLINK_LABEL  = 0x14;  // Has label/description.
     /** Place in worksheet. If set, the {@link #_textMark} field will be present */
-     static final int  HLINK_PLACE  = 0x08;
+    static final int HLINK_PLACE  = 0x08;
     private static final int  HLINK_TARGET_FRAME  = 0x80;  // has 'target frame'
     private static final int  HLINK_UNC_PATH  = 0x100;  // has UNC path
 
-     final static GUID STD_MONIKER = GUID.parse("79EAC9D0-BAF9-11CE-8C82-00AA004BA90B");
-     final static GUID URL_MONIKER = GUID.parse("79EAC9E0-BAF9-11CE-8C82-00AA004BA90B");
-     final static GUID FILE_MONIKER = GUID.parse("00000303-0000-0000-C000-000000000046");
+    static final GUID STD_MONIKER = GUID.parse("79EAC9D0-BAF9-11CE-8C82-00AA004BA90B");
+    static final GUID URL_MONIKER = GUID.parse("79EAC9E0-BAF9-11CE-8C82-00AA004BA90B");
+    static final GUID FILE_MONIKER = GUID.parse("00000303-0000-0000-C000-000000000046");
     /** expected Tail of a URL link */
-    private final static byte[] URL_TAIL  = HexRead.readFromString("79 58 81 F4  3B 1D 7F 48   AF 2C 82 5D  C4 85 27 63   00 00 00 00  A5 AB 00 00"); 
+    private static final byte[] URL_TAIL  = HexRead.readFromString("79 58 81 F4  3B 1D 7F 48   AF 2C 82 5D  C4 85 27 63   00 00 00 00  A5 AB 00 00");
     /** expected Tail of a file link */
-    private final static byte[] FILE_TAIL = HexRead.readFromString("FF FF AD DE  00 00 00 00   00 00 00 00  00 00 00 00   00 00 00 00  00 00 00 00");
+    private static final byte[] FILE_TAIL = HexRead.readFromString("FF FF AD DE  00 00 00 00   00 00 00 00  00 00 00 00   00 00 00 00  00 00 00 00");
 
     private static final int TAIL_SIZE = FILE_TAIL.length;
 
@@ -246,17 +255,31 @@ public final class HyperlinkRecord extends StandardRecord implements Cloneable {
      * This field is optional.  If present, the {@link #HLINK_PLACE} must be set.
      */
     private String _textMark;
-    
+
     private byte[] _uninterpretedTail;
 
     /**
      * Create a new hyperlink
      */
-    public HyperlinkRecord()
-    {
+    public HyperlinkRecord() {}
 
+
+    public HyperlinkRecord(HyperlinkRecord other) {
+        super(other);
+        _range = (other._range == null) ? null : other._range.copy();
+        _guid = (other._guid == null) ? null : new GUID(other._guid);
+        _fileOpts = other._fileOpts;
+        _linkOpts = other._linkOpts;
+        _label = other._label;
+        _targetFrame = other._targetFrame;
+        _moniker = (other._moniker == null) ? null : new GUID(other._moniker);
+        _shortFilename = other._shortFilename;
+        _address = other._address;
+        _textMark = other._textMark;
+        _uninterpretedTail = (other._uninterpretedTail == null) ? null : other._uninterpretedTail.clone();
     }
 
+
     /**
      * @return the 0-based column of the first cell that contains this hyperlink
      */
@@ -266,7 +289,7 @@ public final class HyperlinkRecord extends StandardRecord implements Cloneable {
 
     /**
      * Set the first column (zero-based) of the range that contains this hyperlink
-     * 
+     *
      * @param firstCol the first column (zero-based)
      */
     public void setFirstColumn(int firstCol) {
@@ -282,7 +305,7 @@ public final class HyperlinkRecord extends StandardRecord implements Cloneable {
 
     /**
      * Set the last column (zero-based) of the range that contains this hyperlink
-     * 
+     *
      * @param lastCol the last column (zero-based)
      */
     public void setLastColumn(int lastCol) {
@@ -298,7 +321,7 @@ public final class HyperlinkRecord extends StandardRecord implements Cloneable {
 
     /**
      * Set the first row (zero-based) of the range that contains this hyperlink
-     * 
+     *
      * @param firstRow the first row (zero-based)
      */
     public void setFirstRow(int firstRow) {
@@ -314,7 +337,7 @@ public final class HyperlinkRecord extends StandardRecord implements Cloneable {
 
     /**
      * Set the last row (zero-based) of the range that contains this hyperlink
-     * 
+     *
      * @param lastRow the last row (zero-based)
      */
     public void setLastRow(int lastRow) {
@@ -423,7 +446,7 @@ public final class HyperlinkRecord extends StandardRecord implements Cloneable {
     /**
      * Link options. Must be a combination of HLINK_* constants.
      * For testing only
-     * 
+     *
      * @return Link options
      */
     int getLinkOptions(){
@@ -541,7 +564,7 @@ public final class HyperlinkRecord extends StandardRecord implements Cloneable {
         }
 
         if (in.remaining() > 0) {
-           logger.log(POILogger.WARN, 
+           logger.log(POILogger.WARN,
                  "Hyperlink data remains: " + in.remaining() +
                  " : " +HexDump.toHex(in.readRemainder())
            );
@@ -699,31 +722,31 @@ public final class HyperlinkRecord extends StandardRecord implements Cloneable {
 
     /**
      * Based on the link options, is this a url?
-     * 
+     *
      * @return true, if this is a url link
      */
     public boolean isUrlLink() {
-       return (_linkOpts & HLINK_URL) > 0 
+       return (_linkOpts & HLINK_URL) > 0
            && (_linkOpts & HLINK_ABS) > 0;
     }
     /**
      * Based on the link options, is this a file?
-     * 
+     *
      * @return true, if this is a file link
      */
     public boolean isFileLink() {
-       return (_linkOpts & HLINK_URL) > 0 
+       return (_linkOpts & HLINK_URL) > 0
            && (_linkOpts & HLINK_ABS) == 0;
     }
     /**
      * Based on the link options, is this a document?
-     * 
+     *
      * @return true, if this is a docment link
      */
     public boolean isDocumentLink() {
-       return (_linkOpts & HLINK_PLACE) > 0; 
+       return (_linkOpts & HLINK_PLACE) > 0;
     }
-    
+
     /**
      * Initialize a new url link
      */
@@ -766,19 +789,15 @@ public final class HyperlinkRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public HyperlinkRecord clone() {
-        HyperlinkRecord rec = new HyperlinkRecord();
-        rec._range = _range.copy();
-        rec._guid = _guid;
-        rec._linkOpts = _linkOpts;
-        rec._fileOpts = _fileOpts;
-        rec._label = _label;
-        rec._address = _address;
-        rec._moniker = _moniker;
-        rec._shortFilename = _shortFilename;
-        rec._targetFrame = _targetFrame;
-        rec._textMark = _textMark;
-        rec._uninterpretedTail = _uninterpretedTail;
-        return rec;
+        return copy();
+    }
+
+    @Override
+    public HyperlinkRecord copy() {
+        return new HyperlinkRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/IndexRecord.java

@@ -20,27 +20,29 @@ package org.apache.poi.hssf.record;
 import org.apache.poi.util.IntList;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.RecordFormatException;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Index Record (0x020B)<p>
- * Description:  Occurs right after BOF, tells you where the DBCELL records are for a sheet
- *               Important for locating cells<p>
- *               
- * REFERENCE:  PG 323 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
+ * Occurs right after BOF, tells you where the DBCELL records are for a sheet Important for locating cells
  */
-public final class IndexRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x020B;
+public final class IndexRecord extends StandardRecord {
+    public static final short sid = 0x020B;
     private int                field_2_first_row;       // first row on the sheet
     private int                field_3_last_row_add1;   // last row
     private int                field_4_zero;            // supposed to be zero
     private IntList            field_5_dbcells;         // array of offsets to DBCELL records
 
-    public IndexRecord()
-    {
+    public IndexRecord() {}
+
+    public IndexRecord(IndexRecord other) {
+        super(other);
+        field_2_first_row = other.field_2_first_row;
+        field_3_last_row_add1 = other.field_3_last_row_add1;
+        field_4_zero = other.field_4_zero;
+        field_5_dbcells = (other.field_5_dbcells == null) ? null : new IntList(other.field_5_dbcells);
     }
 
-    public IndexRecord(RecordInputStream in)
-    {
+    public IndexRecord(RecordInputStream in) {
         int field_1_zero          = in.readInt();
         if (field_1_zero != 0) {
         	throw new RecordFormatException("Expected zero for field 1 but got " + field_1_zero);
@@ -48,7 +50,7 @@ public final class IndexRecord extends StandardRecord implements Cloneable {
         field_2_first_row     = in.readInt();
         field_3_last_row_add1 = in.readInt();
         field_4_zero      = in.readInt();
-        
+
         int nCells = in.remaining() / 4;
         field_5_dbcells = new IntList(nCells);
         for(int i=0; i<nCells; i++) {
@@ -139,14 +141,14 @@ public final class IndexRecord extends StandardRecord implements Cloneable {
         return 16 // 4 ints
         	+ getNumDbcells() * 4;
     }
-    
-    /** 
+
+    /**
      * @param blockCount the number of blocks to be indexed
      * @return the size of an IndexRecord when it needs to index the specified number of blocks
      */
     public static int getRecordSizeForBlockCount(int blockCount) {
         return 20 + 4 * blockCount;
-    }  
+    }
 
     @Override
     public short getSid() {
@@ -154,13 +156,15 @@ public final class IndexRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public IndexRecord clone() {
-      IndexRecord rec = new IndexRecord();
-      rec.field_2_first_row = field_2_first_row;
-      rec.field_3_last_row_add1 = field_3_last_row_add1;
-      rec.field_4_zero = field_4_zero;
-      rec.field_5_dbcells = new IntList();
-      rec.field_5_dbcells.addAll(field_5_dbcells);
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public IndexRecord copy() {
+      return new IndexRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/InterfaceEndRecord.java

@@ -21,11 +21,7 @@ import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.RecordFormatException;
 
 /**
- * Title: Interface End Record (0x00E2)<P>
- * Description: Shows where the Interface Records end (MMS)
- *  (has no fields)<P>
- * REFERENCE:  PG 324 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
+ * Shows where the Interface Records ends (MMS)
  */
 public final class InterfaceEndRecord extends StandardRecord {
 
@@ -61,4 +57,9 @@ public final class InterfaceEndRecord extends StandardRecord {
     public short getSid() {
         return sid;
     }
+
+    @Override
+    public InterfaceEndRecord copy() {
+        return instance;
+    }
 }

src/java/org/apache/poi/hssf/record/InterfaceHdrRecord.java

@@ -21,19 +21,22 @@ import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Title: Interface Header Record (0x00E1)<P>
- * Description: Defines the beginning of Interface records (MMS)<P>
- * REFERENCE:  PG 324 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
+ * Defines the beginning of Interface records (MMS)
  */
 public final class InterfaceHdrRecord extends StandardRecord {
-    public final static short sid = 0x00E1;
-    private final int _codepage;
+    public static final short sid = 0x00E1;
 
     /**
      * suggested (and probably correct) default
      */
-    public final static int CODEPAGE = 0x04B0;
+    public static final int CODEPAGE = 0x04B0;
+
+    private final int _codepage;
+
+    public InterfaceHdrRecord(InterfaceHdrRecord other) {
+        super(other);
+        _codepage = other._codepage;
+    }
 
     public InterfaceHdrRecord(int codePage) {
         _codepage = codePage;
@@ -63,4 +66,9 @@ public final class InterfaceHdrRecord extends StandardRecord {
     public short getSid() {
         return sid;
     }
+
+    @Override
+    public InterfaceHdrRecord copy() {
+        return new InterfaceHdrRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/IterationRecord.java

@@ -21,28 +21,30 @@ import org.apache.poi.util.BitField;
 import org.apache.poi.util.BitFieldFactory;
 import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Iteration Record (0x0011)<p>
- * Description:  Tells whether to iterate over formula calculations or not
- *               (if a formula is dependent upon another formula's result)
- *               (odd feature for something that can only have 32 elements in
- *                a formula!)<p>
- * REFERENCE:  PG 325 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
+ * Tells whether to iterate over formula calculations or not.
+ * If a formula is dependent upon another formula's result.
+ * (odd feature for something that can only have 32 elements in a formula!)
  */
-public final class IterationRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x0011;
+public final class IterationRecord extends StandardRecord {
+    public static final short sid = 0x0011;
 
     private static final BitField iterationOn = BitFieldFactory.getInstance(0x0001);
 
     private int _flags;
 
+    public IterationRecord(IterationRecord other) {
+        super(other);
+        _flags = other._flags;
+    }
+
     public IterationRecord(boolean iterateOn) {
         _flags = iterationOn.setBoolean(0, iterateOn);
     }
 
-    public IterationRecord(RecordInputStream in)
-    {
+    public IterationRecord(RecordInputStream in) {
         _flags = in.readShort();
     }
 
@@ -85,7 +87,15 @@ public final class IterationRecord extends StandardRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public IterationRecord clone() {
-        return new IterationRecord(getIteration());
+        return copy();
+    }
+
+    @Override
+    public IterationRecord copy() {
+        return new IterationRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/LabelRecord.java

@@ -21,36 +21,43 @@ import org.apache.poi.util.HexDump;
 import org.apache.poi.util.POILogFactory;
 import org.apache.poi.util.POILogger;
 import org.apache.poi.util.RecordFormatException;
+import org.apache.poi.util.Removal;
 
 /**
  * Label Record (0x0204) - read only support for strings stored directly in the cell...
- * Don't use this (except to read), use LabelSST instead <P>
- * REFERENCE:  PG 325 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
- * 
+ * Don't use this (except to read), use LabelSST instead
+ *
  * @see org.apache.poi.hssf.record.LabelSSTRecord
  */
-public final class LabelRecord extends Record implements CellValueRecordInterface, Cloneable {
-    private final static POILogger logger = POILogFactory.getLogger(LabelRecord.class);
+public final class LabelRecord extends Record implements CellValueRecordInterface {
+    private static final POILogger logger = POILogFactory.getLogger(LabelRecord.class);
 
-    public final static short sid = 0x0204;
+    public static final short sid = 0x0204;
 
-    private int               field_1_row;
-    private short             field_2_column;
-    private short             field_3_xf_index;
-    private short             field_4_string_len;
-    private byte              field_5_unicode_flag;
-    private String            field_6_value;
+    private int    field_1_row;
+    private short  field_2_column;
+    private short  field_3_xf_index;
+    private short  field_4_string_len;
+    private byte   field_5_unicode_flag;
+    private String field_6_value;
 
     /** Creates new LabelRecord */
-    public LabelRecord()
-    {
+    public LabelRecord() {}
+
+    public LabelRecord(LabelRecord other) {
+        super(other);
+        field_1_row = other.field_1_row;
+        field_2_column = other.field_2_column;
+        field_3_xf_index = other.field_3_xf_index;
+        field_4_string_len = other.field_4_string_len;
+        field_5_unicode_flag = other.field_5_unicode_flag;
+        field_6_value = other.field_6_value;
     }
 
     /**
      * @param in the RecordInputstream to read the record from
      */
-    public LabelRecord(RecordInputStream in)
-    {
+    public LabelRecord(RecordInputStream in) {
         field_1_row          = in.readUShort();
         field_2_column       = in.readShort();
         field_3_xf_index     = in.readShort();
@@ -182,14 +189,15 @@ public final class LabelRecord extends Record implements CellValueRecordInterfac
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public LabelRecord clone() {
-      LabelRecord rec = new LabelRecord();
-      rec.field_1_row = field_1_row;
-      rec.field_2_column = field_2_column;
-      rec.field_3_xf_index = field_3_xf_index;
-      rec.field_4_string_len = field_4_string_len;
-      rec.field_5_unicode_flag = field_5_unicode_flag;
-      rec.field_6_value = field_6_value;
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public LabelRecord copy() {
+        return new LabelRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/LabelSSTRecord.java

@@ -19,18 +19,20 @@ package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Label SST Record<P>
- * Description:  Refers to a string in the shared string table and is a column value.<P>
- * REFERENCE:  PG 325 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
+ * Refers to a string in the shared string table and is a column value.
  */
-public final class LabelSSTRecord extends CellRecord implements Cloneable {
-    public final static short sid = 0xfd;
+public final class LabelSSTRecord extends CellRecord {
+    public static final short sid = 0xfd;
     private int field_4_sst_index;
 
-    public LabelSSTRecord() {
-    	// fields uninitialised
+    public LabelSSTRecord() {}
+
+    public LabelSSTRecord(LabelSSTRecord other) {
+        super(other);
+        field_4_sst_index = other.field_4_sst_index;
     }
 
     public LabelSSTRecord(RecordInputStream in) {
@@ -58,7 +60,7 @@ public final class LabelSSTRecord extends CellRecord implements Cloneable {
     public int getSSTIndex() {
         return field_4_sst_index;
     }
-    
+
     @Override
     protected String getRecordName() {
     	return "LABELSST";
@@ -85,10 +87,15 @@ public final class LabelSSTRecord extends CellRecord implements Cloneable {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public LabelSSTRecord clone() {
-      LabelSSTRecord rec = new LabelSSTRecord();
-      copyBaseFields(rec);
-      rec.field_4_sst_index = field_4_sst_index;
-      return rec;
+        return copy();
+    }
+
+    @Override
+    public LabelSSTRecord copy() {
+        return new LabelSSTRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/LbsDataSubRecord.java

@@ -16,11 +16,13 @@
 ==================================================================== */
 package org.apache.poi.hssf.record;
 
+import org.apache.poi.common.Duplicatable;
 import org.apache.poi.ss.formula.ptg.Ptg;
 import org.apache.poi.util.HexDump;
 import org.apache.poi.util.LittleEndianInput;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.RecordFormatException;
+import org.apache.poi.util.Removal;
 import org.apache.poi.util.StringUtil;
 
 /**
@@ -89,6 +91,24 @@ public class LbsDataSubRecord extends SubRecord {
      */
     private boolean[] _bsels;
 
+    LbsDataSubRecord() {}
+
+    public LbsDataSubRecord(LbsDataSubRecord other) {
+        super(other);
+        _cbFContinued = other._cbFContinued;
+        _unknownPreFormulaInt = other._unknownPreFormulaInt;
+        _linkPtg = (other._linkPtg == null) ? null : other._linkPtg.copy();
+        _unknownPostFormulaByte = other._unknownPostFormulaByte;
+        _cLines = other._cLines;
+        _iSel = other._iSel;
+        _flags = other._flags;
+        _idEdit = other._idEdit;
+        _dropData = (other._dropData == null) ? null : other._dropData.copy();
+        _rgLines = (other._rgLines == null) ? null : other._rgLines.clone();
+        _bsels = (other._bsels == null) ? null : other._bsels.clone();
+    }
+
+
     /**
      * @param in the stream to read data from
      * @param cbFContinued the seconf short in the record header
@@ -154,10 +174,6 @@ public class LbsDataSubRecord extends SubRecord {
 
     }
 
-    LbsDataSubRecord(){
-
-    }
-
     /**
      *
      * @return a new instance of LbsDataSubRecord to construct auto-filters
@@ -259,9 +275,16 @@ public class LbsDataSubRecord extends SubRecord {
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public LbsDataSubRecord clone() {
-        // TODO: is immutable ???
-        return this;
+        return copy();
+    }
+
+    @Override
+    public LbsDataSubRecord copy() {
+        return new LbsDataSubRecord(this);
     }
 
     @Override
@@ -303,7 +326,7 @@ public class LbsDataSubRecord extends SubRecord {
     /**
      * This structure specifies properties of the dropdown list control
      */
-    public static class LbsDropData {
+    public static class LbsDropData implements Duplicatable {
         /**
          * Combo dropdown control
          */
@@ -318,7 +341,7 @@ public class LbsDataSubRecord extends SubRecord {
         public static final int STYLE_COMBO_SIMPLE_DROPDOWN = 2;
 
         /**
-         *  An unsigned integer that specifies the style of this dropdown. 
+         *  An unsigned integer that specifies the style of this dropdown.
          */
         private int _wStyle;
 
@@ -343,12 +366,20 @@ public class LbsDataSubRecord extends SubRecord {
          */
         private Byte _unused;
 
-        public LbsDropData(){
+        public LbsDropData() {
             _str = "";
             _unused = 0;
         }
 
-        public LbsDropData(LittleEndianInput in){
+        public LbsDropData(LbsDropData other) {
+            _wStyle = other._wStyle;
+            _cLine = other._cLine;
+            _dxMin = other._dxMin;
+            _str = other._str;
+            _unused = other._unused;
+        }
+
+        public LbsDropData(LittleEndianInput in) {
             _wStyle = in.readUShort();
             _cLine = in.readUShort();
             _dxMin = in.readUShort();
@@ -367,7 +398,7 @@ public class LbsDataSubRecord extends SubRecord {
          * <li>1: Combo Edit dropdown control</li>
          * <li>2: Simple dropdown control (just the dropdown button)</li>
          * </ul>
-         * 
+         *
          * @param style the style - see possible values
          */
         public void setStyle(int style){
@@ -376,7 +407,7 @@ public class LbsDataSubRecord extends SubRecord {
 
         /**
          * Set the number of lines to be displayed in the dropdown.
-         * 
+         *
          * @param num the number of lines to be displayed in the dropdown
          */
         public void setNumLines(int num){
@@ -417,5 +448,10 @@ public class LbsDataSubRecord extends SubRecord {
 
             return sb.toString();
         }
+
+        @Override
+        public LbsDropData copy() {
+            return new LbsDropData(this);
+        }
     }
 }

src/java/org/apache/poi/hssf/record/LeftMarginRecord.java

@@ -18,18 +18,23 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
  * Record for the left margin.
  */
-public final class LeftMarginRecord extends StandardRecord implements Margin, Cloneable {
-    public final static short sid = 0x0026;
+public final class LeftMarginRecord extends StandardRecord implements Margin {
+    public static final short sid = 0x0026;
     private double field_1_margin;
 
-    public LeftMarginRecord()    {    }
+    public LeftMarginRecord() {}
 
-    public LeftMarginRecord(RecordInputStream in)
-    {
+    public LeftMarginRecord(LeftMarginRecord other) {
+        super(other);
+        field_1_margin = other.field_1_margin;
+    }
+
+    public LeftMarginRecord(RecordInputStream in) {
         field_1_margin = in.readDouble();
     }
 
@@ -70,9 +75,15 @@ public final class LeftMarginRecord extends StandardRecord implements Margin, Cl
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public LeftMarginRecord clone() {
-        LeftMarginRecord rec = new LeftMarginRecord();
-        rec.field_1_margin = this.field_1_margin;
-        return rec;
+        return copy();
+    }
+
+    @Override
+    public LeftMarginRecord copy() {
+        return new LeftMarginRecord(this);
     }
-} 
+}

src/java/org/apache/poi/hssf/record/MMSRecord.java

@@ -15,38 +15,36 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 ==================================================================== */
-        
+
 
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
 
 /**
- * Title: MMS Record<P>
- * Description: defines how many add menu and del menu options are stored
- *                    in the file. Should always be set to 0 for HSSF workbooks<P>
- * REFERENCE:  PG 328 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
+ * defines how many add menu and del menu options are stored in the file.
+ * Should always be set to 0 for HSSF workbooks.
+ *
  * @version 2.0-pre
  */
 
-public final class MMSRecord
-    extends StandardRecord
-{
-    public final static short sid = 0xC1;
-    private byte              field_1_addMenuCount;   // = 0;
-    private byte              field_2_delMenuCount;   // = 0;
+public final class MMSRecord extends StandardRecord {
+    public static final short sid = 0xC1;
+    private byte field_1_addMenuCount;
+    private byte field_2_delMenuCount;
 
-    public MMSRecord()
-    {
+    public MMSRecord() {}
+
+    public MMSRecord(MMSRecord other) {
+        field_1_addMenuCount = other.field_1_addMenuCount;
+        field_2_delMenuCount = other.field_2_delMenuCount;
     }
 
-    public MMSRecord(RecordInputStream in)
-    {
+    public MMSRecord(RecordInputStream in) {
         if (in.remaining()==0) {
             return;
         }
-        
+
         field_1_addMenuCount = in.readByte();
         field_2_delMenuCount = in.readByte();
     }
@@ -117,4 +115,9 @@ public final class MMSRecord
     {
         return sid;
     }
+
+    @Override
+    public MMSRecord copy() {
+        return new MMSRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/MergeCellsRecord.java

@@ -17,22 +17,33 @@
 
 package org.apache.poi.hssf.record;
 
+import java.util.stream.Stream;
+
 import org.apache.poi.ss.util.CellRangeAddress;
 import org.apache.poi.ss.util.CellRangeAddressList;
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title: Merged Cells Record (0x00E5)<p>
- * 
- * Description:  Optional record defining a square area of cells to "merged" into one cell.
+ * Optional record defining a square area of cells to "merged" into one cell.
  */
-public final class MergeCellsRecord extends StandardRecord implements Cloneable {
-    public final static short sid = 0x00E5;
-    /** sometimes the regions array is shared with other MergedCellsRecords */ 
+public final class MergeCellsRecord extends StandardRecord {
+    public static final short sid = 0x00E5;
+
+    /** sometimes the regions array is shared with other MergedCellsRecords */
     private final CellRangeAddress[] _regions;
     private final int _startIndex;
     private final int _numberOfRegions;
 
+    public MergeCellsRecord(MergeCellsRecord other) {
+        super(other);
+        _regions = (other._regions == null) ? null
+            : Stream.of(other._regions).map(CellRangeAddress::copy).toArray(CellRangeAddress[]::new);
+        _startIndex = other._startIndex;
+        _numberOfRegions = other._numberOfRegions;
+    }
+
+
     public MergeCellsRecord(CellRangeAddress[] regions, int startIndex, int numberOfRegions) {
 		_regions = regions;
 		_startIndex = startIndex;
@@ -63,7 +74,7 @@ public final class MergeCellsRecord extends StandardRecord implements Cloneable
 
     /**
      * @param index the n-th MergedRegion
-     * 
+     *
      * @return MergedRegion at the given index representing the area that is Merged (r1,c1 - r2,c2)
      */
     public CellRangeAddress getAreaAt(int index) {
@@ -107,12 +118,15 @@ public final class MergeCellsRecord extends StandardRecord implements Cloneable
     }
 
     @Override
+    @SuppressWarnings("squid:S2975")
+    @Deprecated
+    @Removal(version = "5.0.0")
     public MergeCellsRecord clone() {
-    	int nRegions = _numberOfRegions;
-    	CellRangeAddress[] clonedRegions = new CellRangeAddress[nRegions];
-		for (int i = 0; i < clonedRegions.length; i++) {
-			clonedRegions[i] = _regions[_startIndex + i].copy();
-		}
-        return new MergeCellsRecord(clonedRegions, 0, nRegions);
+        return copy();
+    }
+
+    @Override
+    public MergeCellsRecord copy() {
+        return new MergeCellsRecord(this);
     }
 }

src/java/org/apache/poi/hssf/record/MulBlankRecord.java

@@ -18,17 +18,15 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.LittleEndianOutput;
+import org.apache.poi.util.Removal;
 
 /**
- * Title:        Multiple Blank cell record(0x00BE)<p>
- * Description:  Represents a  set of columns in a row with no value but with styling.<p>
+ * Represents a set of columns in a row with no value but with styling.
  *
- * REFERENCE:  PG 329 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
- * 
  * @see BlankRecord
  */
 public final class MulBlankRecord extends StandardRecord {
-	public final static short sid = 0x00BE;
+	public static final short sid = 0x00BE;
 
 	private final int _row;
 	private final int _firstCol;
@@ -55,7 +53,7 @@ public final class MulBlankRecord extends StandardRecord {
 	public int getFirstColumn() {
 		return _firstCol;
 	}
-	
+
 	/**
 	 * @return ending column (last cell this holds in the row). Zero based
 	 */
@@ -122,8 +120,8 @@ public final class MulBlankRecord extends StandardRecord {
 		out.writeShort(_row);
 		out.writeShort(_firstCol);
 		int nItems = _xfs.length;
-		for (int i = 0; i < nItems; i++) {
-			out.writeShort(_xfs[i]);
+		for (short xf : _xfs) {
+			out.writeShort(xf);
 		}
 		out.writeShort(_lastCol);
 	}
@@ -134,7 +132,15 @@ public final class MulBlankRecord extends StandardRecord {
 	}
 
 	@Override
+	@SuppressWarnings("squid:S2975")
+	@Deprecated
+	@Removal(version = "5.0.0")
 	public MulBlankRecord clone() {
+		return copy();
+	}
+
+	@Override
+	public MulBlankRecord copy() {
 		// immutable - so OK to return this
 		return this;
 	}

src/java/org/apache/poi/hssf/record/MulRKRecord.java

@@ -23,18 +23,15 @@ import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.RecordFormatException;
 
 /**
- * MULRK (0x00BD)<p>
- * 
  * Used to store multiple RK numbers on a row.  1 MulRk = Multiple Cell values.
- * HSSF just converts this into multiple NUMBER records.  READ-ONLY SUPPORT!<P>
- * REFERENCE:  PG 330 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)
- * 
+ * HSSF just converts this into multiple NUMBER records.  READ-ONLY SUPPORT!
+ *
  * @since 2.0-pre
  */
 public final class MulRKRecord extends StandardRecord {
-	public final static short sid = 0x00BD;
+	public static final short sid = 0x00BD;
 
-	private final int	 field_1_row;
+	private final int	  field_1_row;
 	private final short   field_2_first_col;
 	private final RkRec[] field_3_rks;
 	private final short   field_4_last_col;
@@ -69,9 +66,9 @@ public final class MulRKRecord extends StandardRecord {
 
 	/**
 	 * returns the xf index for column (coffset = column - field_2_first_col)
-	 * 
+	 *
      * @param coffset the coffset = column - field_2_first_col
-     * 
+     *
 	 * @return the XF index for the column
 	 */
 	public short getXFAt(int coffset) {
@@ -80,9 +77,9 @@ public final class MulRKRecord extends StandardRecord {
 
 	/**
 	 * returns the rk number for column (coffset = column - field_2_first_col)
-	 * 
+	 *
 	 * @param coffset the coffset = column - field_2_first_col
-	 * 
+	 *
 	 * @return the value (decoded into a double)
 	 */
 	public double getRKNumberAt(int coffset) {
@@ -151,4 +148,10 @@ public final class MulRKRecord extends StandardRecord {
 			return retval;
 		}
 	}
+
+	@Override
+	public MulRKRecord copy() {
+		// immutable - so OK to return this
+		return this;
+	}
 }

src/java/org/apache/poi/hssf/record/NameCommentRecord.java

@@ -18,145 +18,154 @@
 package org.apache.poi.hssf.record;
 
 import org.apache.poi.util.HexDump;
-import org.apache.poi.util.LittleEndianInput;
 import org.apache.poi.util.LittleEndianOutput;
 import org.apache.poi.util.StringUtil;
 
 /**
- * Title: NAMECMT Record (0x0894)<p>
- * 
- * Description: Defines a comment associated with a specified name.
+ * Defines a comment associated with a specified name.
  */
 public final class NameCommentRecord extends StandardRecord {
-  public final static short sid = 0x0894;
-
-  private final short field_1_record_type;
-  private final short field_2_frt_cell_ref_flag;
-  private final long field_3_reserved;
-  //private short             field_4_name_length;
-  //private short             field_5_comment_length;
-  private String field_6_name_text;
-  private String field_7_comment_text;
-
-  public NameCommentRecord(final String name, final String comment) {
-    field_1_record_type = 0;
-    field_2_frt_cell_ref_flag = 0;
-    field_3_reserved = 0;
-    field_6_name_text = name;
-    field_7_comment_text = comment;
-  }
-
-  @Override
-  public void serialize(final LittleEndianOutput out) {
-    final int field_4_name_length = field_6_name_text.length();
-    final int field_5_comment_length = field_7_comment_text.length();
-
-    out.writeShort(field_1_record_type);
-    out.writeShort(field_2_frt_cell_ref_flag);
-    out.writeLong(field_3_reserved);
-    out.writeShort(field_4_name_length);
-    out.writeShort(field_5_comment_length);
-
-    boolean isNameMultiByte = StringUtil.hasMultibyte(field_6_name_text);
-    out.writeByte(isNameMultiByte ? 1 : 0);
-    if (isNameMultiByte) {
-        StringUtil.putUnicodeLE(field_6_name_text, out);
-    } else {
-        StringUtil.putCompressedUnicode(field_6_name_text, out);
+    public static final short sid = 0x0894;
+
+    private final short field_1_record_type;
+    private final short field_2_frt_cell_ref_flag;
+    private final long field_3_reserved;
+    //private short field_4_name_length;
+    //private short field_5_comment_length;
+    private String field_6_name_text;
+    private String field_7_comment_text;
+
+    public NameCommentRecord(NameCommentRecord other) {
+        field_1_record_type = other.field_1_record_type;
+        field_2_frt_cell_ref_flag = other.field_2_frt_cell_ref_flag;
+        field_3_reserved = other.field_3_reserved;
+        field_6_name_text = other.field_6_name_text;
+        field_7_comment_text = other.field_7_comment_text;
     }
-    boolean isCommentMultiByte = StringUtil.hasMultibyte(field_7_comment_text);
-    out.writeByte(isCommentMultiByte ? 1 : 0);
-    if (isCommentMultiByte) {
-        StringUtil.putUnicodeLE(field_7_comment_text, out);
-    } else {
-        StringUtil.putCompressedUnicode(field_7_comment_text, out);
+
+    public NameCommentRecord(final String name, final String comment) {
+        field_1_record_type = 0;
+        field_2_frt_cell_ref_flag = 0;
+        field_3_reserved = 0;
+        field_6_name_text = name;
+        field_7_comment_text = comment;
+    }
+
+    /**
+     * @param ris the RecordInputstream to read the record from
+     */
+    public NameCommentRecord(final RecordInputStream ris) {
+        field_1_record_type = ris.readShort();
+        field_2_frt_cell_ref_flag = ris.readShort();
+        field_3_reserved = ris.readLong();
+        final int field_4_name_length = ris.readShort();
+        final int field_5_comment_length = ris.readShort();
+
+        if (ris.readByte() == 0) {
+            field_6_name_text = StringUtil.readCompressedUnicode(ris, field_4_name_length);
+        } else {
+            field_6_name_text = StringUtil.readUnicodeLE(ris, field_4_name_length);
+        }
+        if (ris.readByte() == 0) {
+            field_7_comment_text = StringUtil.readCompressedUnicode(ris, field_5_comment_length);
+        } else {
+            field_7_comment_text = StringUtil.readUnicodeLE(ris, field_5_comment_length);
+        }
     }
-  }
-
-  @Override
-  protected int getDataSize() {
-    return 18 // 4 shorts + 1 long + 2 spurious 'nul's
-         + (StringUtil.hasMultibyte(field_6_name_text) ? field_6_name_text.length()*2 : field_6_name_text.length())
-         + (StringUtil.hasMultibyte(field_7_comment_text) ? field_7_comment_text.length()*2 : field_7_comment_text.length());
-  }
-
-  /**
-   * @param ris the RecordInputstream to read the record from
-   */
-  public NameCommentRecord(final RecordInputStream ris) {
-      field_1_record_type = ris.readShort();
-    field_2_frt_cell_ref_flag = ris.readShort();
-    field_3_reserved = ris.readLong();
-    final int field_4_name_length = ris.readShort();
-    final int field_5_comment_length = ris.readShort();
-
-    if (ris.readByte() == 0) {
-        field_6_name_text = StringUtil.readCompressedUnicode(ris, field_4_name_length);
-    } else {
-        field_6_name_text = StringUtil.readUnicodeLE(ris, field_4_name_length);
+
+    @Override
+    public void serialize(final LittleEndianOutput out) {
+        final int field_4_name_length = field_6_name_text.length();
+        final int field_5_comment_length = field_7_comment_text.length();
+
+        out.writeShort(field_1_record_type);
+        out.writeShort(field_2_frt_cell_ref_flag);
+        out.writeLong(field_3_reserved);
+        out.writeShort(field_4_name_length);
+        out.writeShort(field_5_comment_length);
+
+        boolean isNameMultiByte = StringUtil.hasMultibyte(field_6_name_text);
+        out.writeByte(isNameMultiByte ? 1 : 0);
+        if (isNameMultiByte) {
+            StringUtil.putUnicodeLE(field_6_name_text, out);
+        } else {
+            StringUtil.putCompressedUnicode(field_6_name_text, out);
+        }
+        boolean isCommentMultiByte = StringUtil.hasMultibyte(field_7_comment_text);
+        out.writeByte(isCommentMultiByte ? 1 : 0);
+        if (isCommentMultiByte) {
+            StringUtil.putUnicodeLE(field_7_comment_text, out);
+        } else {
+            StringUtil.putCompressedUnicode(field_7_comment_text, out);
+        }
+    }
+
+    @Override
+    protected int getDataSize() {
+        return 18 // 4 shorts + 1 long + 2 spurious 'nul's
+                + (StringUtil.hasMultibyte(field_6_name_text) ? field_6_name_text.length() * 2 : field_6_name_text.length())
+                + (StringUtil.hasMultibyte(field_7_comment_text) ? field_7_comment_text.length() * 2 : field_7_comment_text.length());
     }
-    if (ris.readByte() == 0) {
-        field_7_comment_text = StringUtil.readCompressedUnicode(ris, field_5_comment_length);
-    } else {
-        field_7_comment_text = StringUtil.readUnicodeLE(ris, field_5_comment_length);
-    }    
-  }
-
-  /**
-   * return the non static version of the id for this record.
-   */
-  @Override
-  public short getSid() {
-    return sid;
-  }
-
-  @Override
-  public String toString() {
-    final StringBuilder sb = new StringBuilder();
-
-    sb.append("[NAMECMT]\n");
-    sb.append("    .record type            = ").append(HexDump.shortToHex(field_1_record_type)).append("\n");
-    sb.append("    .frt cell ref flag      = ").append(HexDump.byteToHex(field_2_frt_cell_ref_flag)).append("\n");
-    sb.append("    .reserved               = ").append(field_3_reserved).append("\n");
-    sb.append("    .name length            = ").append(field_6_name_text.length()).append("\n");
-    sb.append("    .comment length         = ").append(field_7_comment_text.length()).append("\n");
-    sb.append("    .name                   = ").append(field_6_name_text).append("\n");
-    sb.append("    .comment                = ").append(field_7_comment_text).append("\n");
-    sb.append("[/NAMECMT]\n");
-
-    return sb.toString();
-  }
-
-  /**
-   * @return the name of the NameRecord to which this comment applies.
-   */
-  public String getNameText() {
-    return field_6_name_text;
-  }
-  
-  /**
-   * Updates the name we're associated with, normally used
-   *  when renaming that Name
-   * 
-   * @param newName the new name
-   */
-  public void setNameText(String newName) {
-     field_6_name_text = newName;
-  }
-
-  /**
-   * @return the text of the comment.
-   */
-  public String getCommentText() {
-    return field_7_comment_text;
-  }
-  
-  public void setCommentText(String comment) {
-     field_7_comment_text = comment;
-  }
-
-  public short getRecordType() {
-    return field_1_record_type;
-  }
 
+    /**
+     * return the non static version of the id for this record.
+     */
+    @Override
+    public short getSid() {
+        return sid;
+    }
+
+    @Override
+    public String toString() {
+        final StringBuilder sb = new StringBuilder();
+
+        sb.append("[NAMECMT]\n");
+        sb.append("    .record type            = ").append(HexDump.shortToHex(field_1_record_type)).append("\n");
+        sb.append("    .frt cell ref flag      = ").append(HexDump.byteToHex(field_2_frt_cell_ref_flag)).append("\n");
+        sb.append("    .reserved               = ").append(field_3_reserved).append("\n");
+        sb.append("    .name length            = ").append(field_6_name_text.length()).append("\n");
+        sb.append("    .comment length         = ").append(field_7_comment_text.length()).append("\n");
+        sb.append("    .name                   = ").append(field_6_name_text).append("\n");
+        sb.append("    .comment                = ").append(field_7_comment_text).append("\n");
+        sb.append("[/NAMECMT]\n");
+
+        return sb.toString();
+    }
+
+    /**
+     * @return the name of the NameRecord to which this comment applies.
+     */
+    public String getNameText() {
+        return field_6_name_text;
+    }
+
+    /**
+     * Updates the name we're associated with, normally used
+     * when renaming that Name
+     *
+     * @param newName the new name
+     */
+    public void setNameText(String newName) {
+        field_6_name_text = newName;
+    }
+
+    /**
+     * @return the text of the comment.
+     */
+    public String getCommentText() {
+        return field_7_comment_text;
+    }
+
+    public void setCommentText(String comment) {
+        field_7_comment_text = comment;
+    }
+
+    public short getRecordType() {
+        return field_1_record_type;
+    }
+
+    @Override
+    public NameCommentRecord copy() {
+        return new NameCommentRecord(this);
+    }
 }

src/java/org/apache/poi/hssf/record/NameRecord.java

@@ -19,44 +19,46 @@ package org.apache.poi.hssf.record;
 
 import org.apache.poi.hssf.record.cont.ContinuableRecord;
 import org.apache.poi.hssf.record.cont.ContinuableRecordOutput;
+import org.apache.poi.ss.formula.Formula;
 import org.apache.poi.ss.formula.ptg.Area3DPtg;
 import org.apache.poi.ss.formula.ptg.Ptg;
 import org.apache.poi.ss.formula.ptg.Ref3DPtg;
-import org.apache.poi.ss.formula.Formula;
-import org.apache.poi.util.*;
+import org.apache.poi.util.HexDump;
+import org.apache.poi.util.LittleEndianByteArrayInputStream;
+import org.apache.poi.util.LittleEndianInput;
+import org.apache.poi.util.StringUtil;
 
 /**
- * Title:        DEFINEDNAME Record (0x0018)<p>
- * Description:  Defines a named range within a workbook.
+ * Defines a named range within a workbook.
  */
 public final class NameRecord extends ContinuableRecord {
-    public final static short sid = 0x0018;
+    public static final short sid = 0x0018;
 	/**Included for completeness sake, not implemented */
-	public final static byte  BUILTIN_CONSOLIDATE_AREA      = 1;
+	public static final byte  BUILTIN_CONSOLIDATE_AREA      = 1;
 	/**Included for completeness sake, not implemented */
-	public final static byte  BUILTIN_AUTO_OPEN             = 2;
+	public static final byte  BUILTIN_AUTO_OPEN             = 2;
 	/**Included for completeness sake, not implemented */
-	public final static byte  BUILTIN_AUTO_CLOSE            = 3;
+	public static final byte  BUILTIN_AUTO_CLOSE            = 3;
 	/**Included for completeness sake, not implemented */
-	public final static byte  BUILTIN_DATABASE              = 4;
+	public static final byte  BUILTIN_DATABASE              = 4;
 	/**Included for completeness sake, not implemented */
-	public final static byte  BUILTIN_CRITERIA              = 5;
+	public static final byte  BUILTIN_CRITERIA              = 5;
 
-	public final static byte  BUILTIN_PRINT_AREA            = 6;
-	public final static byte  BUILTIN_PRINT_TITLE           = 7;
+	public static final byte  BUILTIN_PRINT_AREA            = 6;
+	public static final byte  BUILTIN_PRINT_TITLE           = 7;
 
 	/**Included for completeness sake, not implemented */
-	public final static byte  BUILTIN_RECORDER              = 8;
+	public static final byte  BUILTIN_RECORDER              = 8;
 	/**Included for completeness sake, not implemented */
-	public final static byte  BUILTIN_DATA_FORM             = 9;
+	public static final byte  BUILTIN_DATA_FORM             = 9;
 	/**Included for completeness sake, not implemented */
-	public final static byte  BUILTIN_AUTO_ACTIVATE         = 10;
+	public static final byte  BUILTIN_AUTO_ACTIVATE         = 10;
 	/**Included for completeness sake, not implemented */
-	public final static byte  BUILTIN_AUTO_DEACTIVATE       = 11;
+	public static final byte  BUILTIN_AUTO_DEACTIVATE       = 11;
 	/**Included for completeness sake, not implemented */
-	public final static byte  BUILTIN_SHEET_TITLE           = 12;
+	public static final byte  BUILTIN_SHEET_TITLE           = 12;
 
-	public final static byte  BUILTIN_FILTER_DB             = 13;
+	public static final byte  BUILTIN_FILTER_DB             = 13;
 
 	private static final class Option {
 		public static final int OPT_HIDDEN_NAME =   0x0001;
@@ -98,10 +100,26 @@ public final class NameRecord extends ContinuableRecord {
 		field_17_status_bar_text = "";
 	}
 
+	public NameRecord(NameRecord other) {
+		super(other);
+		field_1_option_flag = other.field_1_option_flag;
+		field_2_keyboard_shortcut = other.field_2_keyboard_shortcut;
+		field_5_externSheetIndex_plus1 = other.field_5_externSheetIndex_plus1;
+		field_6_sheetNumber = other.field_6_sheetNumber;
+		field_11_nameIsMultibyte = other.field_11_nameIsMultibyte;
+		field_12_built_in_code = other.field_12_built_in_code;
+		field_12_name_text = other.field_12_name_text;
+		field_13_name_definition = other.field_13_name_definition;
+		field_14_custom_menu_text = other.field_14_custom_menu_text;
+		field_15_description_text = other.field_15_description_text;
+		field_16_help_topic_text = other.field_16_help_topic_text;
+		field_17_status_bar_text = other.field_17_status_bar_text;
+	}
+
 	/**
 	 * Constructor to create a built-in named region
 	 * @param builtin Built-in byte representation for the name record, use the public constants
-	 * @param sheetNumber the sheet which the name applies to 
+	 * @param sheetNumber the sheet which the name applies to
 	 */
 	public NameRecord(byte builtin, int sheetNumber)
 	{
@@ -276,7 +294,7 @@ public final class NameRecord extends ContinuableRecord {
 
 	/**
 	 * Convenience Function to determine if the name is a built-in name
-	 * 
+	 *
 	 * @return true, if the name is a built-in name
 	 */
 	public boolean isBuiltInName()
@@ -590,4 +608,9 @@ public final class NameRecord extends ContinuableRecord {
 
 		return "Unknown";
 	}
+
+	@Override
+	public NameRecord copy() {
+		return new NameRecord(this);
+	}
 }