--- a/jdk/src/share/classes/java/text/ChoiceFormat.java	Mon Jun 16 08:09:30 2014 -0700
+++ b/jdk/src/share/classes/java/text/ChoiceFormat.java	Mon Jun 16 17:45:26 2014 +0100
@@ -259,7 +259,7 @@
      * @return the pattern string
      */
     public String toPattern() {
-        StringBuffer result = new StringBuffer();
+        StringBuilder result = new StringBuilder();
         for (int i = 0; i < choiceLimits.length; ++i) {
             if (i != 0) {
                 result.append('|');