I am writing a desktop application using Java Swings. I need to simulate credit card payments so that with sample credit card numbers a real payment (card apparently processed and response received) could be simulated. Is there any free tool or software that I can use to do this?

1 Answer 1


You can do that via Paypal Developer Tools.

Specifically with a Sandbox Test Account and the paypal API.

It will be from your end the same as a real paypal credit card transaction. I haven't used it with Java so I can't comment on any specific tricks to make it work best for that. If after reading those docs you get stuck at all I'd suggest asking a question on SO.

  • Souncds greta, and I will use it, but, even though it was accepted as the ansewer, it doesn't answer the OP's question. Do you know of anything similar for credit cards? Thanks in advance.
    – Mawg
    Commented Sep 22, 2016 at 12:24

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