Polymorphism of subclasses

A function inherited by a subclass may behave differently than the function of the superclass.

The subclass is said to override the function of the superclass.

• Otherwise, subclasses would just augment the data and behavior of superclasses.

• In this way, two subclasses can behave differently from one another and from their superclass.

• Code describing shared behavior of subclasses is written only once, in the superclass.

• Code for subclass is only about things that make that subclass special.

• Diagram

• Examples