Java Swing How to - Handle change event on JMenu with ChangeListener

Question

We would like to know how to handle change event on JMenu with ChangeListener.

Answer

//from   w  w  w  .  ja  v  a2 s . com
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class ContructMenuWithAction {
  public static void main(final String args[]) {
    JFrame frame = new JFrame("MenuSample Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JMenuBar menuBar = new JMenuBar();

    // File Menu, F - Mnemonic
    JMenu fileMenu = new JMenu("File");
    fileMenu.setMnemonic(KeyEvent.VK_F);
    menuBar.add(fileMenu);

    fileMenu.addChangeListener(new ChangeListener() {

      public void stateChanged(ChangeEvent e) {
        System.out.println("File Menu Changed");

      }
    });

    // File->New, N - Mnemonic
    JMenuItem newMenuItem = new JMenuItem("New");
    fileMenu.add(newMenuItem);

    newMenuItem.addChangeListener(new ChangeListener() {

      public void stateChanged(ChangeEvent e) {
        System.out.println("new menu item changed");

      }
    });

    frame.setJMenuBar(menuBar);
    frame.setSize(350, 250);
    frame.setVisible(true);
  }
}