ITPEC FE Morning April 2020 Question 8

Overriding for Polymorphism — subclass redefines a superclass method to achieve runtime polymorphism.

Overriding means a subclass provides its own implementation of a method already defined in its superclass, with the same signature.

This enables polymorphism: the same method call behaves differently depending on the actual object type at runtime.

Why not others:
- (b) Generalization — creating a class by abstracting common properties from multiple classes
- (c) Overloading — same method name, different parameter lists (compile-time, not polymorphism via overriding)
- (d) Encapsulation — hiding internal structure behind an external interface

Key rule: Overriding = same signature, different class (runtime). Overloading = same name, different params (compile-time).

AI-generated — may contain errors