replace some uses of StringBuffer with StringBuilder

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1870046 13f79535-47bb-0310-9956-ffa450edef68

3 files changed, 18 insertions, 19 deletions

diff --git a/src/examples/src/org/apache/poi/hssf/usermodel/examples/InCellLists.java b/src/examples/src/org/apache/poi/hssf/usermodel/examples/InCellLists.java
index 315481b2e2..1b25c1bd8d 100644
--- a/src/examples/src/org/apache/poi/hssf/usermodel/examples/InCellLists.java
+++ b/src/examples/src/org/apache/poi/hssf/usermodel/examples/InCellLists.java
@@ -220,7 +220,7 @@ public class InCellLists {
             buffer.append(listItem);
             buffer.append("\n");
         }
-        // The StringBuffer's contents are the source for the contents
+        // The StringBuilder's contents are the source for the contents
         // of the cell.
         cell.setCellValue(new HSSFRichTextString(buffer.toString().trim()));
         cell.setCellStyle(wrapStyle);
@@ -260,7 +260,7 @@ public class InCellLists {
             buffer.append("\n");
             itemNumber += increment;
         }
-        // The StringBuffer's contents are the source for the contents
+        // The StringBuilder's contents are the source for the contents
         // of the cell.
         cell.setCellValue(new HSSFRichTextString(buffer.toString().trim()));
         cell.setCellStyle(wrapStyle);
@@ -292,7 +292,7 @@ public class InCellLists {
             buffer.append(listItem);
             buffer.append("\n");
         }
-        // The StringBuffer's contents are the source for the contents
+        // The StringBuilder's contents are the source for the contents
         // of the cell.
         cell.setCellValue(new HSSFRichTextString(buffer.toString().trim()));
         cell.setCellStyle(wrapStyle);
@@ -338,7 +338,7 @@ public class InCellLists {
                 }
             }
         }
-        // The StringBuffer's contents are the source for the contents
+        // The StringBuilder's contents are the source for the contents
         // of the cell.
         cell.setCellValue(new HSSFRichTextString(buffer.toString().trim()));
         cell.setCellStyle(wrapStyle);
@@ -409,7 +409,7 @@ public class InCellLists {
             }
             highLevelItemNumber += highLevelIncrement;
         }
-        // The StringBuffer's contents are the source for the contents
+        // The StringBuilder's contents are the source for the contents
         // of the cell.
         cell.setCellValue(new HSSFRichTextString(buffer.toString().trim()));
         cell.setCellStyle(wrapStyle);
@@ -459,7 +459,7 @@ public class InCellLists {
                 }
             }
         }
-        // The StringBuffer's contents are the source for the contents
+        // The StringBuilder's contents are the source for the contents
         // of the cell.
         cell.setCellValue(new HSSFRichTextString(buffer.toString().trim()));
         cell.setCellStyle(wrapStyle);
diff --git a/src/examples/src/org/apache/poi/hssf/view/SVFractionalFormat.java b/src/examples/src/org/apache/poi/hssf/view/SVFractionalFormat.java
index 4884195880..35cedd0ce9 100644
--- a/src/examples/src/org/apache/poi/hssf/view/SVFractionalFormat.java
+++ b/src/examples/src/org/apache/poi/hssf/view/SVFractionalFormat.java
@@ -140,9 +140,9 @@ public class SVFractionalFormat extends Format {
           break;
         }
         Precision = AllowedError / Diff;
-        // This calcualtion of Precision does not always provide results within
+        // This calculation of Precision does not always provide results within
         // Allowed Error. It compensates for loss of significant digits that occurs.
-        // It helps to round the inprecise reciprocal values to i.
+        // It helps to round the imprecise reciprocal values to i.
         B = A;
         A = Num;
       }
@@ -161,7 +161,7 @@ public class SVFractionalFormat extends Format {
         Whole = -Whole;
       }
     }
-    return new StringBuffer().append(Whole).append(" ").append(Num).append("/").append(Den).toString();
+    return new StringBuilder().append(Whole).append(" ").append(Num).append("/").append(Den).toString();
   }
 
   /** This method formats the double in the units specified.
@@ -173,7 +173,7 @@ public class SVFractionalFormat extends Format {
     f -= Whole;
     long Num = Math.round(f * units);
 
-    return new StringBuffer().append(Whole).append(" ").append(Num).append("/").append(units).toString();
+    return new StringBuilder().append(Whole).append(" ").append(Num).append("/").append(units).toString();
   }
 
   public final String format(double val) {
diff --git a/src/examples/src/org/apache/poi/ss/examples/ToCSV.java b/src/examples/src/org/apache/poi/ss/examples/ToCSV.java
index 8b9ca2822b..af2a1da2fb 100644
--- a/src/examples/src/org/apache/poi/ss/examples/ToCSV.java
+++ b/src/examples/src/org/apache/poi/ss/examples/ToCSV.java
@@ -428,10 +428,9 @@ public class ToCSV {
      * @throws java.io.IOException Thrown to indicate and error occurred in the
      *                             underylying file system.
      */
-    private void saveCSVFile(File file)
-                                     throws FileNotFoundException, IOException {
+    private void saveCSVFile(File file) throws FileNotFoundException, IOException {
         ArrayList<String> line;
-        StringBuffer buffer;
+        StringBuilder buffer;
         String csvLineElement;
 
         // Open a writer onto the CSV file.
@@ -443,20 +442,20 @@ public class ToCSV {
             // all of the data recovered from the Excel workbooks' sheets, rows
             // and cells.
             for(int i = 0; i < this.csvData.size(); i++) {
-                buffer = new StringBuffer();
+                buffer = new StringBuilder();
 
                 // Get an element from the ArrayList that contains the data for
                 // the workbook. This element will itself be an ArrayList
                 // containing Strings and each String will hold the data recovered
                 // from a single cell. The for() loop is used to recover elements
                 // from this 'row' ArrayList one at a time and to write the Strings
-                // away to a StringBuffer thus assembling a single line for inclusion
+                // away to a StringBuilder thus assembling a single line for inclusion
                 // in the CSV file. If a row was empty or if it was short, then
                 // the ArrayList that contains it's data will also be shorter than
                 // some of the others. Therefore, it is necessary to check within
                 // the for loop to ensure that the ArrayList contains data to be
                 // processed. If it does, then an element will be recovered and
-                // appended to the StringBuffer.
+                // appended to the StringBuilder.
                 line = this.csvData.get(i);
                 for(int j = 0; j < this.maxRowWidth; j++) {
                     if(line.size() > j) {
@@ -572,7 +571,7 @@ public class ToCSV {
      *         speech mark characters correctly escaped.
      */
     private String escapeEmbeddedCharacters(String field) {
-        StringBuffer buffer;
+        StringBuilder buffer;
 
         // If the fields contents should be formatted to confrom with Excel's
         // convention....
@@ -584,7 +583,7 @@ public class ToCSV {
             // set of speech marks. Thus, "Yes" he said would become
             // """Yes"" he said"
             if(field.contains("\"")) {
-                buffer = new StringBuffer(field.replaceAll("\"", "\\\"\\\""));
+                buffer = new StringBuilder(field.replaceAll("\"", "\\\"\\\""));
                 buffer.insert(0, "\"");
                 buffer.append("\"");
             }
@@ -592,7 +591,7 @@ public class ToCSV {
                 // If the field contains either embedded separator or EOL
                 // characters, then escape the whole field by surrounding it
                 // with speech marks.
-                buffer = new StringBuffer(field);
+                buffer = new StringBuilder(field);
                 if((buffer.indexOf(this.separator)) > -1 ||
                          (buffer.indexOf("\n")) > -1) {
                     buffer.insert(0, "\"");