BCA JAVA 2015 SLIP 15

import java.util.*;

abstract class Shape

{

      abstract public void area();

      abstract public void vol();

}

class Cone extends Shape

{

      int r,s,h;

      Cone(int r,int s,int h)

      {

            this.r=r;

            this.s=s;

            this.h=h;

      }

      public void area()

      {

            System.out.println("Area of Cone = "+(3.14*r*s));

      }

      public void vol()

      {

            System.out.println("volume of Cone = "+(3.14*r*r*h)/3);

      }

}

class Cylinder extends Shape

{     int r,h;

      Cylinder(int r,int h)

      {     this.r=r;

            this.h=h;

      }

      public void area()

      {     System.out.println("Area of Cylinder = "+(2*3.14*r*h));

      }

      public void vol()

      {

            System.out.println("volume of Cylinder  = "+(3.14*r*r*h));

      }

}

class Slip15

{     public static void main(String a[])

      {     Scanner sc = new Scanner(System.in);

            System.out.println("Enter radius, side and height for cone");

            int r =sc.nextInt();

            int s1 =sc.nextInt();

            int h =sc.nextInt();

            Shape s;

            s=new Cone(r,s1,h);

            s.area();

            s.vol();

            System.out.println("Enter radius, height for cylinder");

            r =sc.nextInt();

             h =sc.nextInt();

            s=new Cylinder(r,h);

            s.area();

            s.vol();

      }

}