Java tutorial
// : c14:Faces.java // Icon behavior in Jbuttons. // <applet code=Faces width=400 height=100></applet> // From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002 // www.BruceEckel.com. See copyright notice in CopyRight.txt. import java.awt.Container; import java.awt.FlowLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.JApplet; import javax.swing.JButton; import javax.swing.JFrame; public class Faces extends JApplet { private static Icon[] faces; private JButton jb, jb2 = new JButton("Disable"); private boolean mad = false; public void init() { faces = new Icon[] { new ImageIcon(getClass().getResource("Face0.gif")), new ImageIcon(getClass().getResource("Face1.gif")), new ImageIcon(getClass().getResource("Face2.gif")), new ImageIcon(getClass().getResource("Face3.gif")), new ImageIcon(getClass().getResource("Face4.gif")), }; jb = new JButton("JButton", faces[3]); Container cp = getContentPane(); cp.setLayout(new FlowLayout()); jb.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if (mad) { jb.setIcon(faces[3]); mad = false; } else { jb.setIcon(faces[0]); mad = true; } jb.setVerticalAlignment(JButton.TOP); jb.setHorizontalAlignment(JButton.LEFT); } }); jb.setRolloverEnabled(true); jb.setRolloverIcon(faces[1]); jb.setPressedIcon(faces[2]); jb.setDisabledIcon(faces[4]); jb.setToolTipText("Yow!"); cp.add(jb); jb2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if (jb.isEnabled()) { jb.setEnabled(false); jb2.setText("Enable"); } else { jb.setEnabled(true); jb2.setText("Disable"); } } }); cp.add(jb2); } public static void main(String[] args) { run(new Faces(), 400, 200); } public static void run(JApplet applet, int width, int height) { JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.getContentPane().add(applet); frame.setSize(width, height); applet.init(); applet.start(); frame.setVisible(true); } } ///:~