Creating a Menu Item That Listens for Changes to Its Selection Status : JMenuItem « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JMenuItem

import javax.swing.JMenuItem;

public class Main {
  public static void main(String[] argv) throws Exception {
    JMenuItem item = new JMenuItem("Label") {
      public void menuSelectionChanged(boolean isSelected) {
        super.menuSelectionChanged(isSelected);
        if (isSelected) {
          System.out.println("The menu item is selected"); 
        } else {
          System.out.println("The menu item is no longer selected"); 
        }
      }
    };
  }
}

14.23.JMenuItem
	14.23.1.	Creating JMenuItem Components
	14.23.2.	Creating Menuitem from Action class
	14.23.3.	Adding Drop-Down Menus
	14.23.4.	Disable Menuitem
	14.23.5.	Adding Mnemonic and Accelerator to Menuitem
	14.23.6.	Using Function key as Accelerator
	14.23.7.	Listening to JMenuItem Events with an ActionListener
	14.23.8.	Listening to JMenuItem Events with a MenuDragMouseListener
	14.23.9.	Listening to JMenuItem Events with a MenuKeyListener
	14.23.10.	Separating Menu Items in a Menu
	14.23.11.	Creating an About Menu Item
	14.23.12.	Creating a Menu Item That Listens for Changes to Its Selection Status
	14.23.13.	Customizing JMenuItem Look and Feel