src/java.security.sasl/share/classes/com/sun/security/sasl/CramMD5Base.java

rev 10793 : 8055723: Replace concat String to append in StringBuilder parameters

@@ -194,12 +194,11 @@
         // Get character representation of digest
         StringBuilder digestString = new StringBuilder();
 
         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));
             }
         }