--- old/src/java.security.sasl/share/classes/com/sun/security/sasl/CramMD5Base.java	2014-08-27 10:01:16.000000000 +0800
+++ new/src/java.security.sasl/share/classes/com/sun/security/sasl/CramMD5Base.java	2014-08-27 10:01:15.000000000 +0800
@@ -196,8 +196,7 @@
 
         for (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));