--- old/src/jdk.jconsole/share/classes/sun/tools/jconsole/ThreadTab.java	2014-08-27 22:09:52.000000000 +0800
+++ new/src/jdk.jconsole/share/classes/sun/tools/jconsole/ThreadTab.java	2014-08-27 22:09:51.000000000 +0800
@@ -368,7 +368,7 @@
                             sb.append(Messages.STACK_TRACE);
                             int index = 0;
                             for (StackTraceElement e : ti.getStackTrace()) {
-                                sb.append(e.toString()+"\n");
+                                sb.append(e).append('\n');
                                 if (monitors != null) {
                                     for (MonitorInfo mi : monitors) {
                                         if (mi.getLockedStackDepth() == index) {