@Test
public void testDESede() throws Exception {
    String str = "helloooo";
    byte[] originalKey = Base64.decodeBase64("WVqcvjGqaD7XBVBlXYbJYw==\n");

    byte[] key = new byte[24];
    System.arraycopy(originalKey, 0, key, 0, 16);
    // We're trying to use Two Key key (8 bytes each = 16 bytes), but java DESede only take 24 byte keys.
    // We need to repeat the first 8 bytes on the end of the key, to make a 24 bytes Two key
    // http://tripoverit.blogspot.com.br/2009/06/tripledes-encryption-compatibility.html
    System.arraycopy(originalKey, 0, key, 16, 8);

    final SecretKey secretKey = new SecretKeySpec(key, "DESede"); 
    String enc = encrypt(str.getBytes(), secretKey, "DESede/ECB/NoPadding");
    String dec = new String(Base64.decodeBase64(decrypt(Base64.decodeBase64(enc), secretKey, "DESede/ECB/NoPadding")));

    System.out.println(str);
    System.out.println(enc);
    System.out.println(dec);
    assertEquals(str, dec);
    // MRI Result for same key and input
    assertEquals("7r9gHRoTpGs=", enc);
}

private Cipher createCipher(String transformation) throws Exception {
    Cipher cipher = Cipher.getInstance(transformation);
    return cipher;
}

private String encrypt(byte[] data, Key secretKey, String transformation) throws Exception {
    Cipher cipher = createCipher(transformation);
    cipher.init(Cipher.ENCRYPT_MODE, secretKey);

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    baos.write(cipher.update(data));
    baos.write(cipher.doFinal());
    String dec = Base64.encodeBase64String(baos.toByteArray());
    return dec;
}

private String decrypt(byte[] data, Key secretKey, String transformation) throws Exception {
    Cipher cipher = createCipher(transformation);
    cipher.init(Cipher.DECRYPT_MODE, secretKey);

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    baos.write(cipher.update(data));
    baos.write(cipher.doFinal());
    return Base64.encodeBase64String(baos.toByteArray());
}