Java tutorial
import java.awt.FlowLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JFrame; public class Main { public static void main(String args[]) { ImageIcon iconA = new ImageIcon("IconA.gif"); ImageIcon iconDiable = new ImageIcon("disable.gif"); ImageIcon iconOver = new ImageIcon("over.gif"); ImageIcon iconPressed = new ImageIcon("IconAPressed.gif"); final JButton jbtnA = new JButton("Alpha", iconA); JFrame jfrm = new JFrame(); jfrm.setLayout(new FlowLayout()); jfrm.setSize(300, 300); jfrm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jbtnA.setRolloverIcon(iconOver); jbtnA.setPressedIcon(iconPressed); jbtnA.setDisabledIcon(iconDiable); jfrm.getRootPane().setDefaultButton(jbtnA); jbtnA.setMnemonic(KeyEvent.VK_A); jbtnA.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { System.out.println("Alpha pressed. Beta is enabled."); jbtnA.setEnabled(!jbtnA.isEnabled()); } }); jfrm.add(jbtnA); jfrm.setVisible(true); } }