--- old/src/share/classes/jdk/internal/org/objectweb/asm/commons/Method.java	Fri May 30 13:40:29 2014
+++ new/src/share/classes/jdk/internal/org/objectweb/asm/commons/Method.java	Fri May 30 13:40:29 2014
@@ -205,7 +205,7 @@
         }
         String returnType = method.substring(0, space);
         String methodName = method.substring(space + 1, start - 1).trim();
-        StringBuffer sb = new StringBuffer();
+        StringBuilder sb = new StringBuilder();
         sb.append('(');
         int p;
         do {
@@ -229,7 +229,7 @@
             return type;
         }
 
-        StringBuffer sb = new StringBuffer();
+        StringBuilder sb = new StringBuilder();
         int index = 0;
         while ((index = type.indexOf("[]", index) + 1) > 0) {
             sb.append('[');