Start of Tutorial > Start of Trail > Start of Lesson

Search Feedback Form

Questions and Exercises: Managing Inheritance

Questions

1. Consider the following two classes:

public class ClassA {
    public void methodOne(int i) {
    }
    public void methodTwo(int i) {
    }
    public static void methodThree(int i) {
    }
    public static void methodFour(int i) {
    }
}

public class ClassB extends ClassA {
    public static void methodOne(int i) {
    }
    public void methodTwo(int i) {
    }
    public void methodThree(int i) {
    }
    public static void methodFour(int i) {
    }
}

a. Which method overrides a method in the superclass?
b. Which method hides a method in the superclass?
c. What do the other methods do?

2. Consider the Card, Deck, and DisplayDeck classes you wrote in the previous exercise. What Object methods should each of these classes override?

Exercises

1. Write the implementations for the methods that you answered in question 2.

2. Write an abstract class. Write at least two of its nonabstract subclasses.

Check your answers.

Start of Tutorial > Start of Trail > Start of Lesson

Search Feedback Form

Copyright 1995-2001 Sun Microsystems, Inc. All rights reserved.