// Fig. 12.10: ButtonTest.java

// Creating JButtons.

// Java core packages

import java.awt.*;

import java.awt.event.*;

// Java extension packages

import javax.swing.*;

public class ButtonTest extends JFrame {

private JButton plainButton, fancyButton;

// set up GUI

public ButtonTest()

{

super( "Testing Buttons" );

// get content pane and set its layout

Container container = getContentPane();

container.setLayout( new FlowLayout() );

// create buttons

plainButton = new JButton( "Plain Button" );

container.add( plainButton );

Icon bug1 = new ImageIcon( "bug1.gif" );

Icon bug2 = new ImageIcon( "bug2.gif" );

fancyButton = new JButton( "Fancy Button", bug1 );

fancyButton.setRolloverIcon( bug2 );

container.add( fancyButton );

// create an instance of inner class ButtonHandler

// to use for button event handling

ButtonHandler handler = new ButtonHandler();

fancyButton.addActionListener( handler );

plainButton.addActionListener( handler );

setSize( 275, 100 );

setVisible( true );

}

// execute application

public static void main( String args[] )

{

ButtonTest application = new ButtonTest();

application.addWindowListener(new WindowAdapter()

{ public void windowClosing( WindowEvent event )

{

System.exit( 0 );

}

}

);

}

// inner class for button event handling

private class ButtonHandler implements ActionListener {

// handle button event

public void actionPerformed( ActionEvent event )

{

JOptionPane.showMessageDialog( null,

"You pressed: " + event.getActionCommand() );

}

} // end private inner class ButtonHandler

} // end class ButtonTest