Kmal4li/JAWARA ? reverse-engineered prompt

Build me a Java desktop app called JAWARA for a school style project.

It should have a simple, clean GUI and work with a database, because I want users to be able to manage data from the app instead of doing everything manually. Based on the project files, there is already something about payment methods, so please include a screen for viewing, adding, editing, and deleting payment method data, and make sure it saves properly to the database.

I want it to feel like a finished student project, not a rough demo, so please wire up the main flow, basic navigation, and make the interface easy to use. If you need to check anything about Java desktop best practices or database setup, look up the current docs online and use what fits best.

Keep the code organized and make the app run cleanly from the main project without extra manual steps.