What is a interface?

People Keep on Speaking About interface now let us sees what interface is all about.

I have a class called sportscar

public class sportscar

        {

            public void ProduceHighSpeed()

            {//somecode }

            public void MaintainGoodcc()

            {//somecode }

        }

Now I have one more class called luxurycar

  public class LuxuryCar

        {

            public void ProvideComfort()

            { //somecode }

            public void FitAircooler()

            { //somecode }

        }

Now I want a have a car which should be of both sports and luxury

How can I achieve in c#

If I need to achieve this I should create a class which should have  methods of sportscar and luxury car.

So I should inherit the  both the classes sportscar and luxury car for making my newcar

 

This  the concept of MULTIPLE INHERITANCE is not possible in c# ,So now what is my alternative way to make my newcar.

INTERFACE comes to my rescue to create mynewcar.let us see how this does.

Interface sportscar

        {

            void ProduceHighSpeed();

           

            void MaintainGoodcc();

        }

Interface Luxurycar

        {

           void ProvideComfort();

            void FitAircooler();

        }

Now if we  compare the classes sportscar,Luxurycar and Interfaces  sportscar,Luxurycar we don’t have any implementations for the methods in interface,but only the function declartion.

Interfaces is a contract where we declare only the functions and don’t have any implementation.

Now let us see how do I create a mynewcar

public class myNewCar:sportscar,Luxurycar

        {

            public void ProduceHighSpeed()

            {//somecode }

            public void MaintainGoodcc()

            {//somecode }

            public void ProvideComfort()

            { //somecode }

            public void FitAircooler()

            { //somecode }

Public static void Main()

{

myNewCar TataKanth=new myNewCar();

TataKanth. ProduceHighSpeed();

TataKanth. MaintainGoodcc ();

TataKanth. ProvideComfort ();

TataKanth. FitAircooler ();

}

        }

Points To Rememeber:

1.       When we inherit the interface its mandatory to implement the methods in the interface