buttontest.java

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/**
   @version 1.00 2004-08-17
   @author Cay Horstmann
*/

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ButtonTest
{  
   public static void main(String[] args)
   {  
      ButtonFrame frame = new ButtonFrame();
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.setVisible(true);
   }
}

/**
   A frame with a button panel
*/
class ButtonFrame extends JFrame
{
   public ButtonFrame()
   {
      setTitle("ButtonTest");
      setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

      panel = new JPanel();
      add(panel);

      // create buttons

      yellowButton = new JButton("Yellow");
      blueButton = new JButton("Blue");
      redButton = new JButton("Red");

      // add buttons to panel

      panel.add(yellowButton);
      panel.add(blueButton);
      panel.add(redButton);

      ActionListenerInstaller.processAnnotations(this);
   }


   @ActionListenerFor(source="yellowButton")
   public void yellowBackground()
   {
      panel.setBackground(Color.YELLOW);
   }

   @ActionListenerFor(source="blueButton")
   public void blueBackground()
   {
      panel.setBackground(Color.BLUE);
   }

   @ActionListenerFor(source="redButton")
   public void redBackground()
   {
      panel.setBackground(Color.RED);
   }

   public static final int DEFAULT_WIDTH = 300;
   public static final int DEFAULT_HEIGHT = 200;  

   private JPanel panel;
   private JButton yellowButton;
   private JButton blueButton;
   private JButton redButton;
}