//package chapter8.example8_2;

/**
 * Title:        Chapter 8, "Class Inheritance and Interfaces"
 * Description:  Examples for Chapter 8
 * Copyright:    Copyright (c) 2000
 * Company:      Armstrong Atlantic State University
 * @author Y. Daniel Liang
 * @version 1.0
 */

// Cylinder.java: New cylinder class that overrides the findArea()
// method defined in the circle class
// Place in the package chapter8.example8_2 to avoid naming conflict

import chapter6.CircleWithAccessors;

public class Cylinder extends CircleWithAccessors
{
  /**length of this cylinder*/
  private double length;

  /**Default constructor*/
  public Cylinder()
  {
    super();
    length = 1.0;
  }

  /**Construct a cylinder with specified radius and length*/
  public Cylinder(double r, double l)
  {
    super(r);
    length = l;
  }

  /**Return length*/
  public double getLength()
  {
    return length;
  }

  /**Return the surface area of this cylinder. The formula is
   * 2*circle area + cylinder body area
   */
  public double findArea()
  {
    return 2*super.findArea()+(2*getRadius()*Math.PI)*length;
  }

  /**Return the volume of this cylinder*/
  public double findVolume()
  {
    return super.findArea()*length;
  }
}