#50-SOLID -Liskov Substitution Principle

Liskov Substitution Principle: SubType (Child Class)Must be Substitutable For Base Type(Base Class).

LSP comes into use when you use inheritance/Abstraction.

Rules:

1.Child Class Should not remove Base Class Behaviour.

2.Child Class Should not violate base class invariants.

In short,the Calling code should not know whether it is calling the base class or derived class.