How to create a button with an attached menu?

Question

I don't know how these buttons are called but I'll try to explain what I want to do. I have a toolbar where I have a button that cycles through several functions on every action - I use it to cycle through display modes. Because I do not want to switch through all other posibilties I want a menu next to it where I can directly switch to the desired display mode. Clicking on the button cycles through the modes and clicking on the attached menu provides a direct selection. What I have in mind is something like the "show images / show no images / show cached images only" Button in the Opera webbrowser, see
http://img32.imagevenue.com/img.php?loc=loc74ℑ=a33_button_menu.jpg
Currently I'm using a group of JToggleButtons but since I'm going to add new display modes adding new buttons would make the toolbar look too crowded.

Answer 1

See if this is useful
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
class SwingA implements ActionListener
JPopupMenu pop;
JFrame frame;
JPanel panel;
JButton cmdPop;
JDialog dlgFrame;
int times_clicked = 0;
     public static void main(String[] args)
     SwingA A=new SwingA();
     SwingA()
                try
          UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
                  frame=new JFrame("PopUp");
                  frame.setSize(600,480);
                  frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
                  pop=new JPopupMenu();
                  cmdPop=new JButton("Click");
                 cmdPop.addActionListener(this);
               JMenuItem item = new JMenuItem("First");
               JMenuItem item1 = new JMenuItem("Second");
               pop.add(item);
               pop.add(item1);
                 panel=new JPanel();
                  panel.add(cmdPop);
                  frame.getContentPane().add(panel);
                  frame.setVisible(true);
          catch(Exception E)
     public void actionPerformed(ActionEvent source)
       pop.show(cmdPop, cmdPop.getWidth(), 0);
}