Replaced StringBuffers with StringBuilders

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/fileupload/trunk@1475836 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/commons/fileupload/util/Streams.java b/src/main/java/org/apache/commons/fileupload/util/Streams.java
index ed8b08c..86a1c8d 100644
--- a/src/main/java/org/apache/commons/fileupload/util/Streams.java
+++ b/src/main/java/org/apache/commons/fileupload/util/Streams.java
@@ -186,7 +186,7 @@
     public static String checkFileName(String pFileName) {
         if (pFileName != null  &&  pFileName.indexOf('\u0000') != -1) {
             // pFileName.replace("\u0000", "\\0")
-            final StringBuffer sb = new StringBuffer();
+            final StringBuilder sb = new StringBuilder();
             for (int i = 0;  i < pFileName.length();  i++) {
                 char c = pFileName.charAt(i);
                 switch (c) {
diff --git a/src/test/java/org/apache/commons/fileupload/DefaultFileItemTest.java b/src/test/java/org/apache/commons/fileupload/DefaultFileItemTest.java
index f6b3174..7470843 100644
--- a/src/test/java/org/apache/commons/fileupload/DefaultFileItemTest.java
+++ b/src/test/java/org/apache/commons/fileupload/DefaultFileItemTest.java
@@ -257,7 +257,7 @@
     };
 
     private static String constructString(int[] unicodeChars) {
-        StringBuffer buffer = new StringBuffer();
+        StringBuilder buffer = new StringBuilder();
         if (unicodeChars != null) {
             for (int i = 0; i < unicodeChars.length; i++) {
                 buffer.append((char) unicodeChars[i]);
diff --git a/src/test/java/org/apache/commons/fileupload/DiskFileItemSerializeTest.java b/src/test/java/org/apache/commons/fileupload/DiskFileItemSerializeTest.java
index 1dfa710..8a77fd6 100644
--- a/src/test/java/org/apache/commons/fileupload/DiskFileItemSerializeTest.java
+++ b/src/test/java/org/apache/commons/fileupload/DiskFileItemSerializeTest.java
@@ -156,7 +156,7 @@
      * Create content bytes of a specified size.
      */
     private byte[] createContentBytes(int size) {
-        StringBuffer buffer = new StringBuffer(size);
+        StringBuilder buffer = new StringBuilder(size);
         byte count = 0;
         for (int i = 0; i < size; i++) {
             buffer.append(count+"");
diff --git a/src/test/java/org/apache/commons/fileupload/HttpServletRequestFactory.java b/src/test/java/org/apache/commons/fileupload/HttpServletRequestFactory.java
index 17609ce..0a56b54 100644
--- a/src/test/java/org/apache/commons/fileupload/HttpServletRequestFactory.java
+++ b/src/test/java/org/apache/commons/fileupload/HttpServletRequestFactory.java
@@ -34,7 +34,7 @@
             final String[] strFileNames) {
         // todo - provide a real implementation
 
-        StringBuffer sbRequestData = new StringBuffer();
+        StringBuilder sbRequestData = new StringBuilder();
 
         for (int i = 0; i < strFileNames.length; i++)
         {