--- old/src/jdk.jcmd/share/classes/sun/tools/jstat/SyntaxException.java	2014-08-26 11:23:00.000000000 +0800
+++ new/src/jdk.jcmd/share/classes/sun/tools/jstat/SyntaxException.java	2014-08-26 11:23:00.000000000 +0800
@@ -65,7 +65,7 @@
     public SyntaxException(int lineno, Set<String> expected, Token found) {
         StringBuilder msg = new StringBuilder();
 
-        msg.append("Syntax error at line " + lineno + ": Expected one of \'");
+        msg.append("Syntax error at line ").append(lineno).append(": Expected one of \'");
 
         boolean first = true;
         for (Iterator<String> i = expected.iterator(); i.hasNext(); /* empty */) {
@@ -74,11 +74,11 @@
                 msg.append(keyWord);
                 first = false;
             } else {
-                msg.append("|" + keyWord);
+                msg.append('|').append(keyWord);
             }
         }
 
-        msg.append("\', Found " + found.toMessage());
+        msg.append("\', Found ").append(found.toMessage());
         message = msg.toString();
     }