public Class CheckMenuItem

A MenuItem that can be toggled between selected and unselected states. It is intended that CheckMenuItem be used in conjunction with the Menu or ContextMenu controls.

Creating and inserting a CheckMenuItem into a Menu is shown below.

CheckMenuItem subsystem1 = new CheckMenuItem("Enabled");
subsystem1.setOnAction(e -> System.out.println("subsystem1 #1 Enabled!"));

Menu menu = new Menu("Subsystems");
menu.getItems().add(subsystem1);
MenuBar menuBar = new MenuBar(menu);

Of course, the approach shown above separates out the definition of the CheckMenuItem from the Menu, but this needn't be so.

To ascertain the current state of the CheckMenuItem, you should refer to the selected boolean. An example use case may be the following example:

final checkMenuItem = new CheckMenuItem("Show Widget");
subsystem1.setOnAction(e -> System.out.println("Show the widget!"));
private final BooleanProperty widgetShowing();
public final boolean isWidgetShowing() { return widgetShowing.get(); )
public final void setWidgetShowing(boolean value) {
    widgetShowingProperty().set(value);
}
public final BooleanProperty widgetShowingProperty() {
    if (widgetShowing == null) {
        widgetShowing = new SimpleBooleanProperty(this, "widgetShowing", true);
    }
    return widgetShowing;
}

widgetShowing.bind(checkMenuItem.selected);

Typically a CheckMenuItem will be rendered such that, when selected, it shows a check (or tick) mark in the area normally reserved for the MenuItem graphic. Of course, this will vary depending on the skin and styling specified.