/** Driver.java -- Let's practice using objects of inherited classes.
 *  For example, both rectangles and spheres are specific kinds of shapes.
 *  
 *  One interesting feature of inheritance is that when we declare our
 *  shape objects s1 and s2 below (not terrific names for variables!)
 *  we could have declared them to be of type Shape.  However, to call the
 *  proper findArea or findVolume functions, we would need to use a cast
 *  like this:  ((Rectangle) s1).findArea().
 */
public class Driver
{
  public static void main(String [] args)
  {
    Rectangle s1 = new Rectangle("office", 14, 18);
    Sphere s2 = new Sphere("volleyball", 4.5);

    System.out.println("The " + s1 + " has an area of " + s1.findArea());
    System.out.println("The " + s2 + " has a volume of " + s2.findVolume());
  }
}