Program to find area of rectangle and circle using interfaces.

CODE:

interface area

{ final int r=3;

final int l=10;

final int b=20;

public void calarea();

}

class circle implements area

{

public void calarea(){System.out.println("Area of circle: "+(3.14*r*r));}

}

class rect implements area

{

public void calarea(){System.out.println("Area of rectangle: "+(l*b));}

}

class EXP19Q1

{

public static void main(String args[])

{

circle c1=new circle();

rect r1=new rect();

c1.calarea();

r1.calarea();

} }

OUTPUT:

Comments

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