You need to have the following things in the zip file that you hand in for your final project. This is nessasary for the game to work on the arcade machine.

All objects and methods must be clearly commented. These comments will create Java Docs style APIs.

This is code that may help you with your final projects.  Many common objects have been created for you.

Java includes a way to create APIs for your own classes. This process is actually very simple once you learn how to do it.