Basic Concept of Object Oriented Programming (OOP) in Java

CLASS

• A class is a collection of Common properties and Common actions of group of objects.
• A class can be considered as blue print or a plan for creating an object.
• For a class , we can create any number of objects.

OBJECT

• An Entity that exist physically in real world which require some memory will be called as an object
• Every object will contain some "properties" and some "actions".
• Actions are the tasked performed by the object they are represented by methods

ENCAPSULATION

• Encapsulation is the process of binding the variables and methods into single Entity.
• Wrapping of variable(data) and methods(code) into single unit.

ABSTRACTION

• Abstraction refers to hiding the implementation details of a code and exposing only the necessary information to the user.

INHERITANCE

• Inheritance is the process of acquiring the members from one class to another class

POLYMORPHISM

• If Single entity shows multiple behaviours,then it is called as "Polymorphism"
• (eg): Method Overloading and Method Overriding