Single inheritance

 Write a program using single inheritance which Is base class is shape and derived class is circle and calculate the area of circle

class shape

{

    public void area()

    {

        System.out.println("Display area");

    }

}

class cirle extends shape

{

    public void area (float r)

    {

       

        System.out.println(3.14*r*r);

    }

}

public class singleinheritance

{

    public static void main (String args [])

    {

        cirle t = new cirle();

        t.area(5);

    }

}

OUTPUT: 78.5