Review
Inheritance
Syntax
An Example of Inheritance
HeaterController Super Class
Extending HeaterController
A VariableController Object
The Is-A Relationship
Is-A versus Has-A
Issues in Inheritance
Inappropriate Inheritance
Multiple Inheritance?
Downcasts and Upcasts
Inheritance for Specialization
Sub Class Initialization
Super Class Construction (cont.)
Default No-Arg Constructor
Access Control Issues
Access Control Rules
Overriding Methods
PPT Slide
Rules on Overriding
Method Selection
Selecting the Super Class Version of a Method
Usage of super
Restrictions on Overriding
Super Class Behavior and Overriding
Example
Final Classes and Methods
Email: zhou@sci.brooklyn.cuny.edu
Home Page: www.sci.brooklyn.cuny.edu/~zhou