--- old/src/java.xml.ws/share/classes/com/sun/xml/internal/messaging/saaj/packaging/mime/internet/MimeUtility.java	2015-10-16 12:58:14.000000000 +0200
+++ new/src/java.xml.ws/share/classes/com/sun/xml/internal/messaging/saaj/packaging/mime/internet/MimeUtility.java	2015-10-16 12:58:14.000000000 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -510,8 +510,8 @@
         // Encoded words found. Start decoding ...
 
         st = new StringTokenizer(etext, lwsp, true);
-        StringBuffer sb = new StringBuffer();  // decode buffer
-        StringBuffer wsb = new StringBuffer(); // white space buffer
+        StringBuilder sb = new StringBuilder();  // decode buffer
+        StringBuilder wsb = new StringBuilder(); // white space buffer
         boolean prevWasEncoded = false;
 
         while (st.hasMoreTokens()) {
@@ -648,7 +648,7 @@
             throw new UnsupportedEncodingException(
                         "Unknown transfer encoding: " + encoding);
 
-        StringBuffer outb = new StringBuffer(); // the output buffer
+        StringBuilder outb = new StringBuilder(); // the output buffer
         doEncode(string, b64, jcharset,
                  // As per RFC 2047, size of an encoded string should not
                  // exceed 75 bytes.
@@ -662,7 +662,7 @@
 
     private static void doEncode(String string, boolean b64,
                 String jcharset, int avail, String prefix,
-                boolean first, boolean encodingWord, StringBuffer buf)
+                boolean first, boolean encodingWord, StringBuilder buf)
                         throws UnsupportedEncodingException {
 
         // First find out what the length of the encoded version of
@@ -812,7 +812,7 @@
     private static String decodeInnerWords(String word)
                                 throws UnsupportedEncodingException {
         int start = 0, i;
-        StringBuffer buf = new StringBuffer();
+        StringBuilder buf = new StringBuilder();
         while ((i = word.indexOf("=?", start)) >= 0) {
             buf.append(word.substring(start, i));
             int end = word.indexOf("?=", i);
@@ -862,7 +862,7 @@
             char c = word.charAt(i);
             if (c == '"' || c == '\\' || c == '\r' || c == '\n') {
                 // need to escape them and then quote the whole string
-                StringBuffer sb = new StringBuffer(len + 3);
+                StringBuilder sb = new StringBuilder(len + 3);
                 sb.append('"');
                 sb.append(word.substring(0, i));
                 int lastc = 0;
@@ -885,7 +885,7 @@
         }
 
         if (needQuoting) {
-            StringBuffer sb = new StringBuffer(len + 2);
+            StringBuilder sb = new StringBuilder(len + 2);
             sb.append('"').append(word).append('"');
             return sb.toString();
         } else
@@ -927,7 +927,7 @@
             return s;
 
         // have to actually fold the string
-        StringBuffer sb = new StringBuffer(s.length() + 4);
+        StringBuilder sb = new StringBuilder(s.length() + 4);
         char lastc = 0;
         while (used + s.length() > 76) {
             int lastspace = -1;
@@ -969,7 +969,7 @@
         if (!foldText)
             return s;
 
-        StringBuffer sb = null;
+        StringBuilder sb = null;
         int i;
         while ((i = indexOfAny(s, "\r\n")) >= 0) {
             int start = i;
@@ -986,7 +986,7 @@
                     while (i < l && ((c = s.charAt(i)) == ' ' || c == '\t'))
                         i++;
                     if (sb == null)
-                        sb = new StringBuffer(s.length());
+                        sb = new StringBuilder(s.length());
                     if (start != 0) {
                         sb.append(s.substring(0, start));
                         sb.append(' ');
@@ -996,14 +996,14 @@
                 }
                 // it's not a continuation line, just leave it in
                 if (sb == null)
-                    sb = new StringBuffer(s.length());
+                    sb = new StringBuilder(s.length());
                 sb.append(s.substring(0, i));
                 s = s.substring(i);
             } else {
                 // there's a backslash at "start - 1"
                 // strip it out, but leave in the line break
                 if (sb == null)
-                    sb = new StringBuffer(s.length());
+                    sb = new StringBuilder(s.length());
                 sb.append(s.substring(0, start - 1));
                 sb.append(s.substring(start, i));
                 s = s.substring(i);
@@ -1051,7 +1051,7 @@
             // no mapping table, or charset parameter is null
             return charset;
 
-        String alias = (String)mime2java.get(charset.toLowerCase());
+        String alias = mime2java.get(charset.toLowerCase());
         return alias == null ? charset : alias;
     }
 
@@ -1073,7 +1073,7 @@
             // no mapping table or charset param is null
             return charset;
 
-        String alias = (String)java2mime.get(charset.toLowerCase());
+        String alias = java2mime.get(charset.toLowerCase());
         return alias == null ? charset : alias;
     }
 
@@ -1140,12 +1140,12 @@
 
     // Tables to map MIME charset names to Java names and vice versa.
     // XXX - Should eventually use J2SE 1.4 java.nio.charset.Charset
-    private static Hashtable mime2java;
-    private static Hashtable java2mime;
+    private static Hashtable<String, String> mime2java;
+    private static Hashtable<String, String> java2mime;
 
     static {
-        java2mime = new Hashtable(40);
-        mime2java = new Hashtable(10);
+        java2mime = new Hashtable<String, String>(40);
+        mime2java = new Hashtable<String, String>(10);
 
         try {
             // Use this class's classloader to load the mapping file
@@ -1229,7 +1229,7 @@
         }
     }
 
-    private static void loadMappings(LineInputStream is, Hashtable table) {
+    private static void loadMappings(LineInputStream is, Hashtable<String, String> table) {
         String currLine;
 
         while (true) {