sandovaldiegoulises/tp-integrador-poo ? reverse-engineered prompt

Build me a simple Java object oriented school project for practicing classes and objects.

I want it to be organized cleanly in a Classes folder, with a few example classes that show good use of constructors, attributes, methods, encapsulation, and basic relationships between objects. Make it easy to run and easy to understand, like something a student could present as a final assignment.

If you need to choose a small example domain, pick something common and realistic, like a library, store, or classroom system, but keep it simple and fully working. Add a clear main class that shows the program in action with sample data.

Please keep the code readable, use Spanish or simple English comments if helpful, and make sure everything compiles without missing pieces. If there are any small decisions to make, choose the most practical option and look up current docs online if needed.