samiksc

 Profile Answers by samiksc 

• Jan 12th, 2006

 

Polymorphism is different implementations of methods with same signatures in a class hierarchy.

Ploymorphisms may be classified as

1. Interface based  -- achieved when two classes implement the same interface providing different implementations of the interface methods
2. Inheritance based -- achieved when a derived class provides a different implementation of a overridable method of a base class.

OR

1. Compile time polymorphism -- achieved when a derived class overrides a base class method or implements an interface method.
2. Runtime polymorphism -- achieved when a derived class provides a different implementation of a 'virtual' method of the base class.