We can use the same method—that is, the same name and arguments—to cause different things to happen according to the class on which we invoke the method. In object-oriented programming, this feature is known as polymorphism.
For example, consider that we defined a
talk method in the
Animal class. The different subclasses of
Animal must override this method to provide their own implementation of
Dog class overrode this method to print the representation of a dog barking—that is, a
Woof message. On the other hand, a
Cat class will override this method to print the representation of a cat meowing—that is, a
Now, let's think about a
CartoonDog class that represents a dog that can really ...