marcosfba/JAVA — reverse-engineered prompt

Build me a simple Java study project collection that feels like a set of classroom exercises for desktop apps.

I want a few small apps or modules that show the basics step by step, like opening JavaFX windows, forms for cadastro, simple tables and buttons, saving data to a database, and a small ecommerce style example with products, customers, and orders. It should also include a few report screens or outputs so I can see summaries and practice with listings.

Please keep it beginner friendly and organized like lessons, so each part builds on the previous one and I can run them separately if needed. Use clear sample data, basic validation, and comments that explain what each example is trying to teach. If some pieces make more sense as persistence exercises or report exercises, that is fine.

The goal is not a polished product, it is a practical Java learning repo with working examples I can open, run, and study. If you need to, look up current docs online and make sensible choices.