private void encrptString()
 {
    sample = "<xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
    String encrypt = Encoder.BuilderAES()
            .message(sample)
            .method(AES.Method.AES_ECB_PKCS5PADDING)
            .key("qwertyuiopasdfgh")
            .keySize(AES.Key.SIZE_128)
            .encrypt();

    System.out.println("encrypt"+encrypt);

    String stringFromBase = new String(Base64.decode(encrypt,Base64.DEFAULT));
    System.out.println("base64"+stringFromBase.trim());



   String hex= null;
   try {
       hex = toHex(stringFromBase);
   } catch (UnsupportedEncodingException e) {
       e.printStackTrace();
   }
   Toast.makeText(this, hex, Toast.LENGTH_SHORT).show();
   System.out.println("hex"+hex.trim());


   }

public String toHex(String arg) throws UnsupportedEncodingException {
    return String.format("%040x", new BigInteger(1, arg.getBytes("UTF-8")));


}