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Java 6 Illuminated: An Active Learning Approach, 2nd Edition
book

Java 6 Illuminated: An Active Learning Approach, 2nd Edition

by Julie Anderson, Herve J. Franceschi
February 2008
Intermediate to advanced content levelIntermediate to advanced
1288 pages
39h 39m
English
Jones & Bartlett Learning
Content preview from Java 6 Illuminated: An Active Learning Approach, 2nd Edition
Figure 10.2
The RollABall Class
Hierarchy
Object
Component
Container
Panel
Applet
JApplet
RollABall
656 CHAPTER 10 Object-Oriented Programming,Part 3: Inheritance,Polymorphism,and Interfaces
Lets look at an example of inheritance that weve already used. Weve used
the extends keyword whenever we wrote an applet. For example, we defined
our rolling ball applet in Chapter 6 as:
public class RollABall extends JApplet
This means that the RollABall class inherits from the JApplet class.
Because our RollABall class extends JApplet, it inherits more than 275 meth-
ods and more than 15 fields. Thats because the JApplet class is a subclass of
Applet, which is a subclass ...
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Publisher Resources

ISBN: 9780763749637