Final answer:
This question is about creating three classes in Java and implementing various methods in the main class. The program should be well-documented and user-friendly with the use of JavaFX for a graphical interface.
Step-by-step explanation:
This question is related to computer programming and requires the creation of three classes in Java. One of the classes is the main class that includes two fields that are objects from the other two classes. Each class needs to have at least two fields, multiple constructors, accessor and mutator methods, and a toString method.
In the main class, you need to implement the following methods:
- equals: This method compares two objects for equality.
- copy: This method creates a copy of an object.
- One that passes an object other than the copy method: This method takes an object as a parameter and performs some operation on it.
- One that returns an object: This method returns an object.
- toString that calls the toString methods from the other classes: This method calls the toString methods of the other two classes and returns a string representation of the main class object.
To make the program user-friendly, you can use JavaFX to create a graphical interface with a bit of pizzazz.
Remember to document your code well both internally and externally.