1  import java.awt.Rectangle;

  2  

  3  /**

  4     This program demonstrates the use of a Measurer.

  5  */

  6  public class MeasurerTester

  7  {

  8     public static void main(String[] args)

  9     {

 10        Measurer areaMeas = new AreaMeasurer();

 11  

 12        Rectangle[] rects = new Rectangle[] 

 13           {

 14              new Rectangle(5, 10, 20, 30),

 15              new Rectangle(10, 20, 30, 40),

 16              new Rectangle(20, 30, 5, 15)

 17           };

 18  

 19        double averageArea = Data.average(rects, areaMeas);

 20        System.out.println("Average area: " + averageArea);

 21        System.out.println("Expected: 625");

 22     }

 23  }