SLIP 15. Define an abstract class
Shape with abstract methods area() and volume(). Write a java program to
calculate area and volume of Cone and Cylinder.
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();
}
}
