--- old/src/java.management/share/classes/javax/management/relation/RoleUnresolved.java	2014-08-27 10:00:40.000000000 +0800
+++ new/src/java.management/share/classes/javax/management/relation/RoleUnresolved.java	2014-08-27 10:00:39.000000000 +0800
@@ -282,7 +282,7 @@
      */
     public String toString() {
         StringBuilder result = new StringBuilder();
-        result.append("role name: " + roleName);
+        result.append("role name: ").append(roleName);
         if (roleValue != null) {
             result.append("; value: ");
             for (Iterator<ObjectName> objNameIter = roleValue.iterator();
@@ -294,7 +294,7 @@
                 }
             }
         }
-        result.append("; problem type: " + problemType);
+        result.append("; problem type: ").append(problemType);
         return result.toString();
     }