01: import java.awt.Rectangle;
02: 
03: /**
04:    Objects of this class measure rectangles by area.
05: */
06: public class RectangleMeasurer implements Measurer
07: {
08:    public double measure(Object anObject)
09:    {
10:       Rectangle aRectangle = (Rectangle) anObject;
11:       double area = aRectangle.getWidth() * aRectangle.getHeight();
12:       return area;
13:    }
14: }
15: