JAVA QUESTION:

Consider the following code

Calling Class:

Classes

Envelope e = new Envelope(0); e.etype++; System.out.println(e.getWeight()); GiftBox g = new GiftBox(); System.out.println(p.getWeight());

public class Package { public int getWeight(int a , int b) { return a*b; } } public class Envelope extends Package { public int etype; public Envelope(int a) { etype =a; } public int getWeight() { if (etype == 1) {return 6;} return 7; } } public class Box extends Package{ int w,h; public Box (int a , int b) { w=a; h=b; } public Box () { w = 5; h = 2; } public int getWeight() { return w*h; } } public class GiftBox extends Box { public GiftBox() { super(); } public int getWeight() { return super.getWeight() - 2 ; } } public class Customer { protected ArrayList boxes; public Customer(Box inbox) { boxes = new ArrayList(); boxes.add(inbox); } }

- What would be the output of the Calling class execution?

- Draw the UML diagram for these classes showing relationships and association. Use class names only, do not list properites or methods.

- Name all parent-child combinations.

- Should the annotation @Override be applied to the getWeight method overridden in the Envelope class?