Inherited Capabilities
lExtension:
The derived class can potentially use all data components and methods from the base class, and add more of its own.
The derived class can potentially use all data components and methods from the base class, and add more of its own.
lOver-Riding:
It can also selectively re-define or
Òover-rideÓ methods of the same name.
(It is a good idea to keep the same approximate meaning.)
It can also selectively re-define or
Òover-rideÓ methods of the same name.
(It is a good idea to keep the same approximate meaning.)