--- a/jdk/src/share/classes/javax/print/MimeType.java	Mon Jun 16 08:09:30 2014 -0700
+++ b/jdk/src/share/classes/javax/print/MimeType.java	Mon Jun 16 17:45:26 2014 +0100
@@ -285,7 +285,7 @@
      */
     private String getStringValue() {
         if (myStringValue == null) {
-            StringBuffer result = new StringBuffer();
+            StringBuilder result = new StringBuilder();
             result.append (myPieces[0]);
             result.append ('/');
             result.append (myPieces[1]);
@@ -510,7 +510,7 @@
         int n = s.length();
         int i;
         char c;
-        StringBuffer result = new StringBuffer (n+2);
+        StringBuilder result = new StringBuilder (n+2);
         result.append ('\"');
         for (i = 0; i < n; ++ i) {
             c = s.charAt (i);