Shopping Cart API for any payment gateway? (PayPal at least required)

Question

I\'m trying to find a java based API that wraps up the details of processing a credit card transaction or purchase via PayPal at a minimum, and other gateways as a plus in an IP

Answer 1

I know only this product (commercial): IBM WebSphere Commerce Payment There is a tutorial to integrate also with PayPal: Integration with PayPal

I dont know the license cost, you must contact IBM for this.