[Java-gnome-developer] Something maybe wrong in the Second.java!

[bbskill <bb...@to...>]

in Chapter 3. Adding Menus of the java-gnome-tutorial,

Second.java

  private void createMainWindow() {
    app = new App("Second", "Second App");
    app.setDefaultSize(200, 200);
    app.addListener(new LifeCycleListener() {
      public void lifeCycleEvent(LifeCycleEvent event) {	
        public void lifeCycleEvent(LifeCycleEvent event) {}
        public boolean lifeCycleQuery(LifeCycleEvent event) {
          Gtk.mainQuit();
          return false;
        }
      }
    });
  }

Why should lifeCycleEvent and lifeCycleQuery be included in the lifeCycleEvent function ???
I think it is a clerical error,isn't it ?