Introduction to Object Oriented Programming, 3rd Ed
Chapter 17
The Polymorphic Variable 
Outline
-  Roadmap 
 -  Simple Polymorphic Variables 
 -  The Receiver Variable 
-  The Receiver Variable In Frameworks 
 -  Example, Repainting a Window 
 
 -  Self and Super 
 -  Downcasting (Reverse Polymorphism) 
 -  Pure Polymorphism 
-  Another Example of Pure Polymorphism 
 
 -  Chapter Summary 
 
Other Material