June 2004
Intermediate to advanced
848 pages
21h 28m
English
Content preview from Just Java™ 2
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Chapter 8. More OOP—Extending Classes
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Polymorphism
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The Class Whose Name Is
Class -
Exercises
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Some Light Relief—The Nerd Detection System
We now come to the main part of object-oriented programming, covering inheritance and polymorphism. Despite the unusual names, they describe some clean concepts. You need a solid understanding of inheritance and polymorphism to program in an object-oriented language and to use some of the Java library routines.
As we have seen several times, inheritance means basing a new class on a class that is already defined. The new class will extend the existing class in some way. Just as inheritance in real life is “what you get from a parent,” inheritance in OOP is “what you get from a parent ...
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