src/java.xml.ws/share/classes/com/sun/xml/internal/messaging/saaj/packaging/mime/internet/UniqueValue.java

@@ -1,7 +1,7 @@
 /*
- * 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
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -58,11 +58,11 @@
      * This implementation generates it by concatenating a global
      * part number, a newly created object's <code>hashCode()</code>,
      * and the current time (in milliseconds).
      */
     public static String getUniqueBoundaryValue() {
-        StringBuffer s = new StringBuffer();
+        StringBuilder s = new StringBuilder();
 
         // Unique string is ----=_Part_<part>_<hashcode>.<currentTime>
         s.append("----=_Part_").append(part++).append("_").
           append(s.hashCode()).append('.').
           append(System.currentTimeMillis());