This project will be a Java application, it will be developed in NetBeans, and must employ the following:
Implement at least one Superclass and two Subclasses.
Implement at least one Arrays Structure.
Implement File I/O: the ability for your application to write to and read from a file or, simply put, save and open a datafile (covered in week 8).
At least one User interface using JFrame, Swing, and AWT components (covered in week 9). You will be required to use at least one list component, one button component, several TextField components, and the Menu Component.
Add error handling (e.g. if the user entering letters instead of numbers).