import java.awt.Rectangle;
import javax.swing.JFrame;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JComponent;
import java.awt.Color;


/**
     This class exercises the Rectangle class of
       the Java API
 */


public class RectangleTester extends JComponent
 {
      
      // Rectangle objects used for testing      

      private static Rectangle r1, r2, r3, r4;
 
      
/**
     A test method for the RectangleTester class
 */

      public void test()                                           { 
       JFrame frame = new JFrame();
       frame.setSize(500, 400);
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       frame.add(this);
       frame.setVisible(true);                                   }

 
/**
     Paints the Rectangles r1 through r4 onto
       a given Graphics object
     @param g the Graphics object         
 */

     public void paintComponent(Graphics g)            {

         // RecoverGraphics2D
       Graphics2D g2 = (Graphics2D) g;

       g2.setColor(Color.RED);
       g2.fill(r1);
       g2.setColor(Color.ORANGE);
       g2.fill(r2);
       g2.setColor(Color.GREEN);
       g2.fill(r3);
       g2.setColor(Color.BLUE);
       g2.fill(r4);                                    }

   

/**
     This <code>main</code> method invokes a test method 
       for the RectangleTester class
 */
    
    public static void main(String args[])                  {
      RectangleTester rt = new RectangleTester();
 
      r1 = new Rectangle(110,20,80,40);
      r2 = r1;
      r3 = new Rectangle(100,120,240,160);
      r1.translate(40,20);       
      r4 = new Rectangle(r1);
      r4.translate(-60,50);

      rt.test();
                                                            }


}