怎样c# java md5值保持一致

/// <summary>
        /// 获得字符串md5.
        /// </summary>
        /// <param name="myString"></param>
        /// <returns></returns>
        public static string GetMD5(string myString)
        {
            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] fromData = System.Text.Encoding.UTF8.GetBytes(myString);
            byte[] targetData = md5.ComputeHash(fromData);
            string byte2String = null;
            
            for (int i = 0; i < targetData.Length; i++)
            {
                byte2String += targetData[i].ToString("x");
            }
        
            return byte2String;
        }

public static String md5(String url) throws NoSuchAlgorithmException, UnsupportedEncodingException {
        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(url.getBytes("utf-8"));
        byte[] result = md.digest();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < result.length; i++) {
            int val = result[i] & 0xff;
            sb.append(Integer.toHexString(val));
        }
        return sb.toString();
    }