Trail: Learning the Java Language
Lesson: Interfaces and Inheritance
Questions and Exercises
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Questions and Exercises: 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 Questions and Exercises: Classes. What Object methods should each of these classes override?

Exercises

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


Check your answers.


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