--- a/jdk/src/share/classes/java/util/AbstractMap.java	Wed Dec 01 13:01:53 2010 -0800
+++ b/jdk/src/share/classes/java/util/AbstractMap.java	Wed Dec 01 21:46:52 2010 +0000
@@ -523,7 +523,7 @@
             sb.append(value == this ? "(this Map)" : value);
             if (! i.hasNext())
                 return sb.append('}').toString();
-            sb.append(", ");
+            sb.append(',').append(' ');
         }
     }