--- old/src/java.base/share/classes/sun/security/ssl/HandshakeMessage.java	2014-08-27 22:08:41.000000000 +0800
+++ new/src/java.base/share/classes/sun/security/ssl/HandshakeMessage.java	2014-08-27 22:08:41.000000000 +0800
@@ -1478,7 +1478,7 @@
                 boolean opened = false;
                 for (SignatureAndHashAlgorithm signAlg : algorithms) {
                     if (opened) {
-                        sb.append(", " + signAlg.getAlgorithmName());
+                        sb.append(", ").append(signAlg.getAlgorithmName());
                     } else {
                         sb.append(signAlg.getAlgorithmName());
                         opened = true;