Fix a handful of forbidden apis identified problems

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1698198 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/ss/format/CellDateFormatter.java

@@ -23,6 +23,7 @@ import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.Date;
 import java.util.Formatter;
+import java.util.Locale;
 import java.util.regex.Matcher;
 
 /**
@@ -69,22 +70,22 @@ public class CellDateFormatter extends CellFormatter {
                         desc.setCharAt(mStart + i, 'm');
                     mStart = -1;
                 }
-                return part.toLowerCase();
+                return part.toLowerCase(Locale.ROOT);
 
             case 'h':
             case 'H':
                 mStart = -1;
                 hStart = pos;
                 hLen = part.length();
-                return part.toLowerCase();
+                return part.toLowerCase(Locale.ROOT);
 
             case 'd':
             case 'D':
                 mStart = -1;
                 if (part.length() <= 2)
-                    return part.toLowerCase();
+                    return part.toLowerCase(Locale.ROOT);
                 else
-                    return part.toLowerCase().replace('d', 'E');
+                    return part.toLowerCase(Locale.ROOT).replace('d', 'E');
 
             case 'm':
             case 'M':
@@ -92,16 +93,16 @@ public class CellDateFormatter extends CellFormatter {
                 mLen = part.length();
                 // For 'm' after 'h', output minutes ('m') not month ('M')
                 if (hStart >= 0)
-                    return part.toLowerCase();
+                    return part.toLowerCase(Locale.ROOT);
                 else
-                    return part.toUpperCase();
+                    return part.toUpperCase(Locale.ROOT);
 
             case 'y':
             case 'Y':
                 mStart = -1;
                 if (part.length() == 3)
                     part = "yyyy";
-                return part.toLowerCase();
+                return part.toLowerCase(Locale.ROOT);
 
             case '0':
                 mStart = -1;

src/java/org/apache/poi/ss/format/CellTextFormatter.java

@@ -18,6 +18,7 @@ package org.apache.poi.ss.format;
 
 import org.apache.poi.ss.format.CellFormatPart.PartHandler;
 
+import java.util.Locale;
 import java.util.regex.Matcher;
 
 /**
@@ -62,7 +63,7 @@ public class CellTextFormatter extends CellFormatter {
         int start = toAppendTo.length();
         String text = obj.toString();
         if (obj instanceof Boolean) {
-            text = text.toUpperCase();
+            text = text.toUpperCase(Locale.ROOT);
         }
         toAppendTo.append(desc);
         for (int i = 0; i < textPos.length; i++) {

src/java/org/apache/poi/util/HexDump.java

@@ -25,8 +25,11 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.PrintStream;
+import java.nio.charset.Charset;
 import java.text.DecimalFormat;
 
+import org.apache.commons.codec.CharEncoding;
+
 /**
  * dump data in hexadecimal format; derived from a HexDump utility I
  * wrote in June 2001.
@@ -36,6 +39,7 @@ import java.text.DecimalFormat;
  */
 public class HexDump {
     public static final String EOL = System.getProperty("line.separator");
+    private static final Charset UTF8 = Charset.forName(CharEncoding.UTF_8);
     private static final char _hexcodes[] = "0123456789ABCDEF".toCharArray();
     private static final int _shifts[]   =
     {
@@ -70,7 +74,7 @@ public class HexDump {
     {
         if (data.length == 0)
         {
-            stream.write( ("No Data" + EOL).getBytes() );
+            stream.write( ("No Data" + EOL).getBytes(UTF8) );
             stream.flush();
             return;
         }
@@ -125,7 +129,7 @@ public class HexDump {
                 }
             }
             buffer.append(EOL);
-            stream.write(buffer.toString().getBytes());
+            stream.write(buffer.toString().getBytes(UTF8));
             stream.flush();
             buffer.setLength(0);
             display_offset += chars_read;