Q 01) What is OOP What Are The Concepts In It ?

Object Oriented Programming :

      It is a programming paradigm used to combine data and procedures in a package called “OBJECTS”.

     The object oriented programming language directly represents the real life objects like a car, jeep, customer, account, etc..

There are 3 main concepts of OOPS they are:

1. Encapsulation
2. Inheritance
3. Polymorphism

These features of Object Oriented programming languages

( ie, PIE ) which make Java Powerful .And they are the Pillars of OOPL.

PIE : Short form to remember 3 concepts of OOPL.

Where P -  Polymorphism.

            I -   Inheritance.

            E -  Encapsulation.