public static void main(String args[]) throws NoSuchAlgorithmException {

        String s = new String("dsajgbqignbopuadhbgnhpjaunaob");

        MessageDigest md5 = MessageDigest.getInstance("MD5");

        md5.update(s.getBytes());

        System.out.println(bytes2Hex(md5.digest())); 

    }

    private static String bytes2Hex(byte[] bts) {

        String des = "";

        String tmp = null;

        for (int i = 0; i < bts.length; i++) {

            tmp = (Integer.toHexString(bts[i] & 0xFF));

            if (tmp.length() == 1) {

                des += "0";

            }

            des += tmp;

        }

        return des;

    }

private static String byteToHex(final byte[] hash) {

        Formatter formatter = new Formatter();

        for (byte b : hash)

        {

            formatter.format("%02x", b);

        }

        String result = formatter.toString();

        formatter.close();

        return result;

    }