Best OOPS Concepts with examples

OOPS Concepts are mainly 4
 1.Abstraction
 2.Encapsulation
 3.Inheritance
 4.Polymorphisam
Abstraction:-Hidding non-essential features and showing the
essential features

              (or)
Hidding unnecessary data from the users details,is called
abstraction.
Real Time example:TV Remote Button

in that number format and power buttons and other buttons
there.just we are seeing the butttons,we don't see the
button circuits.i.e buttons circutes and wirings all are
hidden.so i think its good example.

Encapsulation:

    Writing Operations and methods stored in a single
class.This is Called Encapsulation

Real Time Example:Medical Capsuals
i.e one drug is stored in buttom layer and another drug is
stored in Upper layer these two layers are combined in
single capsual.

Inheritance:
   The New Class is Existing from Old Class,i.e SubClass is
Existing from Super Class.

Real Time Example:
      Father and Son Relationship

Polymorphisam:

          Sinle Form behaving diffreantly in diffreant
Situations.
  Example:-
            Person
Person in Home act is husband/son,
       in Office acts Employer.
       in Public Good Cityzen.