Answer the following questions:

- ArrayStack is a public class. What does this mean in terms of the overall visibility of the class? Why is this a good design decision? [2]

- All class variables are of type protected. What does this mean in terms of their overall visibility? [1]

- ArrayStack stores objects of type Object rather than specific types like int or float. Why is this good idea? How is this design decision linked to the concept of an explicit cast as a means to store and retrieve any kind of object types on such a stack? [3]

public class ArrayStack implements Stack actual capacity of the stack array protected int capacity; protected static final int CAPACITY protected Object S: protected int top =-1; 1000;// default array capacity II array used to implement the stack II index for the top of the stack public ArrayStacko II default constructor: creates stack with default capacity this(CAPACITY); public void push(Object element) f if (isFullO) return; top++ S[top]- element