java.lang.Object
|
+----java.awt.MenuComponent
|
+----java.awt.MenuItem
|
+----java.awt.CheckboxMenuItem
public class CheckboxMenuItem
extends MenuItem
implements ItemSelectable
This class represents a check box that can be included in a menu. Clicking on the check box in the menu changes its state from "on" to "off" or from "off" to "on."
The following picture depicts a menu which contains an instance of CheckBoxMenuItem:
The item labeled Check shows a check box menu item in its "off" state.
When a check box menu item is selected, AWT sends an item event to the item. Since the event is an instance of ItemEvent, the processEvent method examines the event and passes it along to processItemEvent. The latter method redirects the event to any ItemListener objects that have registered an interest in item events generated by this menu item.