Java Swing - 如何检查是否在其项目更改侦听器中选择了JCheckBoxMenuItem...

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"); 
        }
      }
    };
  }
}