Write a java program to illustrate the interfaces concept.

Write a java program to illustrate the interfaces concept.

Program Algorithm:

Step 1: Create a class with the main function

Step 2: Create an interface ‘Show' with an abstract method. Create an interface ‘Greater' which extends this interface.

Step 3: Create a class'Doo' which implements this interface and it also defines all the abstract methods of this interface.

Step 4: Create an object of this class and call these redefined methods.

Program Code:

import java.io.*;

class Cv

{

public static void main(String args[])throws IOException

{

Doo d=new Doo();

BufferedReader b=new BufferedReader(new InputStreamReader(System.in));

System.out.println("Enter value of x:");

d.x=Integer.parseInt(b.readLine());

System.out.println("Enter value of y:");

d.y=Integer.parseInt(b.readLine());

System.out.println("Output:");

d.print();

d.check();

}

}

class Doo implements Greater

{

int x;

int y;

public void print()

{

System.out.println("x:"+x+"\ny:"+y);

}

public void check()

{

System.out.println("Greater out of x and y:"+((x>y)?x:y));

}

}

interface Show

{

void print();

}

interface Greater extends Show

{

void check();

}

Sample Inputs and Outputs:

Enter value of x:

21

Enter value of y:

2

Output:

x:21

y:2

Greater out of x and y :21