1. Which line should be added into the removeCard method of class GroupOfCards?

public class GroupOfCards

{

private ArrayList cards; // list of cards

// Remove and return a card object at a specified location

public Card removeCard(int index) {

________________

} // end removeCard

} // end class GroupOfCards

A. cards[index] = null;

B. Card = cards.get(index);

return card;

C. cards.remove(index);

D. return cards.remove(index);

E. Cant decide as we dont know the detail of class Card

2. Explain the difference between the this keyword and the super keyword. When should each be used? Illustrate with code segment examples.

3. What is overriding, the purpose, and how to override? What is overloading, the purpose, and how to overload? Illustrate with code segment examples.
4. Explain the purpose of the final keyword on each of the following three code segments, each is from a different program.
5. // example 1

6. private final int MAX_SIZE;

   // example 2

   public class Employee extends Person

   {

   ...

   public final void display()

   {

   System.out.println("name: " + getName());

   System.out.println("id: " + id);

   } // end display()

   } // end class Employee

   // example 3

   public final class FullTime extends Employee

   {

   ...

   } // end class FullTime