diff -r 6af860e04527 -r eb4fcf73ee99 jdk/src/share/classes/javax/swing/text/TabSet.java
--- a/jdk/src/share/classes/javax/swing/text/TabSet.java	Tue Nov 02 15:08:56 2010 +0900
+++ b/jdk/src/share/classes/javax/swing/text/TabSet.java	Tue Nov 02 13:32:00 2010 +0300
@@ -199,7 +199,7 @@
      */
     public String toString() {
         int            tabCount = getTabCount();
-        StringBuffer   buffer = new StringBuffer("[ ");
+        StringBuilder buffer = new StringBuilder("[ ");
 
         for(int counter = 0; counter < tabCount; counter++) {
             if(counter > 0)