public static String createMD5Hash(String md5) {
        try {
             java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
             byte[] array = md.digest(md5.getBytes());
             StringBuffer sb = new StringBuffer();
             for (int i = 0; i < array.length; ++i) {
               sb.append(Integer.toHexString((array[i] & 0xFF) | 0x100).substring(1,3));
            }
             return sb.toString();
         } catch (java.security.NoSuchAlgorithmException e) {
         }
         return null;
     }