You are to create a complete Java application. This application must be approved by your instructor; however, you will decide what this application is about. This application must include at a...

You are to create a complete Java application. This application must be approved by your instructor; however, you will decide what this application is about. This application must include at a minimum:

Three classes minimum

At least one class must use inheritance

At least one class must be abstract

JavaFX front end – as you will see, JavaFX will allow you to create a GUI user interface.

The User Interface must respond to events.

If your application requires a data backend, you can choose to use a database or to use text files.

Error handling - The application should be able to handle invalid data.