erdahuja/InstitueManagementSystem ? reverse-engineered prompt

Build me a simple institute management system for an educational center.

I want a desktop app in Java that helps manage students, fees, expenses, and basic admin tasks in one place. The app should let staff add and update student details, record fee payments, track unpaid dues, and enter expenses with dates and notes. It should also have a clean way to view payment history and expense records so someone can quickly check what has been paid and what is still pending.

Please make it easy to use, with forms for entering data and screens for viewing lists and summaries. Keep the design practical for office staff, not technical users. If it makes sense, include login access for admin or staff, and make the data persistent so it does not disappear when the app closes.

Use the existing Java code in the project if it helps, and fill in anything missing so it feels like a complete working institute management tool. If you need to, look up current docs online while building it.