private byte[] encryptDES() throws Exception
    {
        byte[] inputBytes = new byte[] { 81, 87, 69, 82, 84, 89, 32, 32};
        byte[] keyValue = new byte[] { 81, 87, 69, 82, 84, 89, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32 };
        String algorithm = "DES";
        String transformation = "DES";
        DESKeySpec keySpec = new DESKeySpec(keyValue);
        SecretKey key = SecretKeyFactory.getInstance(algorithm).generateSecret(keySpec);
        Cipher encrypter = Cipher.getInstance(transformation);
        encrypter.init(Cipher.ENCRYPT_MODE, key);
        return encrypter.doFinal(inputBytes);
    }

 encrypter.doFinal(inputBytes);