Object Oriented Programming Concept

Object Oriented Programming Concept:

Object-Oriented Programming is a methodology to design a program using.............

1.Object

2.Class

3.Inheritance

4.Polymorphism

5.Abstraction

6.Encapsulation

Object:

In real world there is everything which we see has its state and behavior is called object. Such as book, room, table etc.

Class:

Class is collection of objects.

Inheritance:

It is just like parents and child.
In real word, we know that child can access all the properties from parents.

But parents can’t access child’s properties.
This concept is basically called Inheritance. It provides code reusability.

Polymorphism:

Poly means many and morphos means forms.

Polymorphism means many forms or ways.

Java use method overloading and method overriding to achieve polymorphism.

Abstraction:

Abstraction means hiding internal activity and showing functionality.

For example: File save, we just click save but we don't know the internal processing.

Java use abstract class and interface to achieve abstraction.

Encapsulation:

Encapsulation means code and data together into a single unit.

For example: capsule, it is bonded with different medicines.

Class is the example of encapsulation.

We all know that in a class all the resource or code stay together.