PayPal NVP Java Library

is an implementation of PayPal’s Express Checkout API written in Java; with emphasis on ease-of-use and simplicity.

We didn't want to reinvent the wheel, but PayPal's SDK is a bit outdated and their documentation is not updated regularly. We wanted to create something that was a lot easier to work with, written in Java and we believe that this should be community driven.

/* create new instance of paypal nvp */
PayPal pp = new PayPal(user,
    Environment.SANDBOX);

// ... 

/* sends request and sets response */
pp.setResponse(setExpressCheckout);

/* get the response */
Map<String, String> response =
    setExpressCheckout.getNVPResponse();