--- a/jdk/test/com/sun/crypto/provider/Cipher/DES/TestUtility.java	Tue Jan 06 13:58:24 2015 +0000
+++ b/jdk/test/com/sun/crypto/provider/Cipher/DES/TestUtility.java	Wed Jan 07 03:59:06 2015 +0000
@@ -27,39 +27,52 @@
 
 public class TestUtility {
 
-    private static final String digits = "0123456789abcdef";
+    private static final String DIGITS = "0123456789abcdef";
 
-    public TestUtility() {
+    private TestUtility() {
 
     }
 
     public static String hexDump(byte[] bytes) {
 
-        StringBuffer buf = new StringBuffer (bytes.length * 2);
-        int  i;
+        StringBuilder buf = new StringBuilder(bytes.length * 2);
+        int i;
 
-        buf.append ("    ");                    // four spaces
+        buf.append("    "); // four spaces
         for (i = 0; i < bytes.length; i++) {
-            buf.append (digits.charAt ((bytes[i] >> 4) & 0x0f));
-            buf.append (digits.charAt (bytes[i] & 0x0f));
-            if (((i + 1) % 32) == 0) {
-                if ((i +  1) != bytes.length)
-                    buf.append ("\n    ");      // line after four words
-            } else if (((i + 1) % 4) == 0)
-                buf.append (' ');               // space between words
+            buf.append(DIGITS.charAt(bytes[i] >> 4 & 0x0f));
+            buf.append(DIGITS.charAt(bytes[i] & 0x0f));
+            if ((i + 1) % 32 == 0) {
+                if (i + 1 != bytes.length) {
+                    buf.append("\n    "); // line after four words
+                }
+            } else if ((i + 1) % 4 == 0) {
+                buf.append(' '); // space between words
+            }
         }
-        return buf.toString ();
+        return buf.toString();
     }
 
+    public static String hexDump(byte[] bytes, int index) {
+        StringBuilder buf = new StringBuilder(bytes.length * 2);
+        int i;
+
+        buf.append("    "); // four spaces
+        buf.append(DIGITS.charAt(bytes[index] >> 4 & 0x0f));
+        buf.append(DIGITS.charAt(bytes[index] & 0x0f));
+        return buf.toString();
+    }
 
     public static boolean equalsBlock(byte[] b1, byte[] b2) {
 
-        if (b1.length != b2.length)
+        if (b1.length != b2.length) {
             return false;
+        }
 
-        for (int i=0; i<b1.length; i++) {
-            if (b1[i] != b2[i])
+        for (int i = 0; i < b1.length; i++) {
+            if (b1[i] != b2[i]) {
                 return false;
+            }
         }
 
         return true;
@@ -67,9 +80,10 @@
 
     public static boolean equalsBlock(byte[] b1, byte[] b2, int len) {
 
-        for (int i=0; i<len; i++) {
-            if (b1[i] != b2[i])
+        for (int i = 0; i < len; i++) {
+            if (b1[i] != b2[i]) {
                 return false;
+            }
         }
 
         return true;