Java tutorial
import java.awt.BorderLayout; import java.awt.Color; import java.awt.Component; import java.awt.Container; import java.awt.Graphics; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.Icon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JToolBar; public class Main { public static void main(String args[]) { JFrame f = new JFrame(); Container pane = f.getContentPane(); Icon icon = new RedOvalIcon(); final Action action = new MyAction("Hello", icon); // Add tooltip action.putValue(Action.SHORT_DESCRIPTION, "World"); JToolBar jt1 = new JToolBar(); JButton b1 = new JButton(action); jt1.add(b1); pane.add(jt1, BorderLayout.NORTH); JToolBar jt2 = new JToolBar(); JButton b2 = new JButton(action); jt2.add(b2); pane.add(jt2, BorderLayout.SOUTH); JButton jb = new JButton("Toggle Action"); jb.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { action.setEnabled(!action.isEnabled()); } }); pane.add(jb, BorderLayout.CENTER); f.setSize(200, 200); f.show(); } } class MyAction extends AbstractAction { public MyAction(String name, Icon icon) { super(name, icon); } public void actionPerformed(ActionEvent e) { System.out.println("Selected: " + getValue(Action.NAME)); } } class RedOvalIcon implements Icon { public void paintIcon(Component c, Graphics g, int x, int y) { g.setColor(Color.RED); if (c.isEnabled()) { g.fillOval(x, y, getIconWidth(), getIconHeight()); } else { g.drawOval(x, y, getIconWidth(), getIconHeight()); } } public int getIconWidth() { return 20; } public int getIconHeight() { return 30; } }