Save a credit card using PayPal's REST APIs. Code snippet uses the rest-api-sdk-java SDK from PayPal

CreateCreditCard.java

import com.paypal.api.payments.CreditCard;
import com.paypal.core.rest.APIContext;
import com.paypal.core.rest.PayPalRESTException;
import java.util.HashMap;

CreditCard cc = new CreditCard();
cc.setExpireMonth(11)
  .setExpireYear(2018).setFirstName("Joe")
  .setLastName("Shopper").setNumber("4111111111111111").setType("visa")
  .setCvv2("874");
  
// Collect configuration values for the API call.
Map<String, String> configurationMap = new HashMap<String, String>();
configurationMap.put("service.EndPoint", "http://api.mydomain.com");

try {

    // Create an APIContext with optional OAuth access token for API calls
    // that require authentication.
    String accessToken = new OAuthTokenCredential("clientID", "clientSecret").getAccessToken();
    APIContext apiContext = new APIContext(accessToken);

    // Carry out the create credit card API operation.
    CreditCard creditCard = cc.create(apiContext);
    
} catch (PayPalRESTException exe) {
    // Handle Error
}