--- old/src/java.security.jgss/share/classes/sun/security/krb5/internal/crypto/dk/DkCrypto.java	2014-08-27 10:01:13.000000000 +0800
+++ new/src/java.security.jgss/share/classes/sun/security/krb5/internal/crypto/dk/DkCrypto.java	2014-08-27 10:01:12.000000000 +0800
@@ -640,8 +640,7 @@
 
         for (int i = 0; i < digest.length; i++) {
             if ((digest[i] & 0x000000ff) < 0x10) {
-                digestString.append("0" +
-                    Integer.toHexString(digest[i] & 0x000000ff));
+                digestString.append('0').append(Integer.toHexString(digest[i] & 0x000000ff));
             } else {
                 digestString.append(
                     Integer.toHexString(digest[i] & 0x000000ff));