--- old/src/java.naming/share/classes/javax/naming/BinaryRefAddr.java	2014-08-27 22:09:17.000000000 +0800
+++ new/src/java.naming/share/classes/javax/naming/BinaryRefAddr.java	2014-08-27 22:09:17.000000000 +0800
@@ -165,11 +165,11 @@
       * @return The non-null string representation of this address.
       */
     public String toString(){
-        StringBuilder str = new StringBuilder("Address Type: " + addrType + "\n");
-
+        StringBuilder str = new StringBuilder();
+        str.append("Address Type: ").append(addrType).append('\n');
         str.append("AddressContents: ");
         for (int i = 0; i<buf.length && i < 32; i++) {
-            str.append(Integer.toHexString(buf[i]) +" ");
+            str.append(Integer.toHexString(buf[i])).append(' ');
         }
         if (buf.length >= 32)
             str.append(" ...\n");