Basic Definitions

Basic Definitions

Class :

    A class is a blueprint or prototype from which objects are created.
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A Class is a template or Blue print is used to bind or group the related data members along with its related functionalities
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    A class is a prototype that defines the variables and the methods common to all objects of a certain kind. Member Functions operate upon the member variables of the class.

Object : 

Objects is instance of a class it contains state and behaviors, State is nothing but variables and behavior is nothing but methods.

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The concept of allocating memory space for non-static members of a class dynamically at run-time is know as object.

Encapsulation :

Hiding internal data from the outside world, and accessing it only through publicly exposed methods is known as data encapsulation.

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    Encapsulation is a way to obtain "information hiding". Encapsulation is to hide the variables or something inside a class, preventing unauthorized parties to use. So the public methods like getter and setter access it and the other classes call these  methods for accessing".

Polymorphism : 

The concept defining multiple functioinalities or logics with the same name to perform the same operations.

Inheritance :

The concept of using the properties of one class into another class without using class or ref variable.

Interface :

    A collection of methods with no implementation is called an interface. An Interface is contract between a class and the outside world. When a class implements a interface, it promises to provide the behavior published by that interface.
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  Interface is a syntax or structure is used to provide specifications and default implementations.

Abstract Class :

  An abstract class is a class that is declared abstract. It may or may not include abstract methods. Abstract class cannot be instantiated, but they can be subclassed.  
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    Abstract class is a syntax or structure is used to provide both specifications (Abstract Methods) and implementations (Concrete methods).

Multi Threading :

     The concept of crating multiple functionalities or logic's as a threads and executing those threads simultaneously one with the other is known as Multi threading.