| 5. Polymorphism | ||
|---|---|---|
 | Chapter 1. Object Oriented Programming |  |
| 5. Polymorphism | ||
|---|---|---|
| | Chapter 1. Object Oriented Programming | |
Polymorphism means that the sender of a message does not need to be aware of which class the receiving object belongs to. The receiving instance can belong to an arbitrary class .
A sender object needs only to know that another object can perform a certain behaviour, not which class it belongs to nor which operations will perform that behaviour.
Flexible and modification resistant systems can be implemented. When a new object from a new class is added, this modification should only affect this new object not those who send messages to it.
Copyright © 1998-2009 Dilvan Moreira
| |  | |
| 4. Inheritance |  | Chapter 2. The Java Software |
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