PayPal NVP Example

/* set user - these are your credentials from paypal */
Profile user = new BaseProfile.Builder("user name",
    "password").signature("AfcWX...").build();

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

/* create items (items from a shopping basket) */
PaymentItem item1 = new PaymentItem();
item1.setAmount("12.00");

PaymentItem item2 = new PaymentItem();
item2.setAmount("4.30");
item2.setDescription("Suya");

PaymentItem[] items = {item1, item2};

/* create payment (now you can create payment from the items) */
Payment payment = new Payment(items);
payment.setCurrency(Currency.GBP);

/* create set express checkout - the first paypal request */
SetExpressCheckout setEC = new SetExpressCheckout(payment,
    "https://www.return_url.com", "https://www.cancel_url.com");

/* send request and set response */
pp.setResponse(setEc);

/* now you have set express checkout containting */
/* request and response as well */
Map<String, String> response = setEC.getNVPResponse();
                

/* set user, create instance of paypal - same as above */
// ... 

/* create get balance */
GetBalance balance = new Balance();

/* send request and set response */
pp.setResponse(balance);

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