Package Summary Overview Summary

### class:JMenuItem [NONE]
- All Implemented Interfaces: ImageObserver, ItemSelectable, MenuContainer, Serializable, Accessible, MenuElement, SwingConstants Direct Known Subclasses: JCheckBoxMenuItem, JMenu, JRadioButtonMenuItem
      public class JMenuItem
      extends AbstractButton
      implements Accessible, MenuElement
An implementation of an item in a menu. A menu item is essentially a button sitting in a list. When the user selects the "button", the action associated with the menu item is performed. A `JMenuItem` contained in a `JPopupMenu` performs exactly that function. Menu items can be configured, and to some degree controlled, by `Action`s. Using an `Action` with a menu item has many benefits beyond directly configuring a menu item. Refer to Swing Components Supporting `Action` for more details, and you can find more information in How to Use Actions , a section in The Java Tutorial . For further documentation and for examples, see How to Use Menus in The Java Tutorial. Warning: Swing is not thread safe. For more information see Swing's Threading Policy . Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the `java.beans` package. Please see `XMLEncoder`. Since: 1.2 See Also: `JPopupMenu`, `JMenu`, `JCheckBoxMenuItem`, `JRadioButtonMenuItem`

### constructor:JMenuItem() [NONE]
- #### JMenuItem
      public JMenuItem()
Creates a `JMenuItem` with no set text or icon.

### constructor:JMenuItem(javax.swing.Icon) [NONE]
- #### JMenuItem
      public JMenuItem(Icon icon)
Creates a `JMenuItem` with the specified icon. Parameters: `icon` - the icon of the `JMenuItem`

### constructor:JMenuItem(java.lang.String) [NONE]
- #### JMenuItem
      public JMenuItem(String text)
Creates a `JMenuItem` with the specified text. Parameters: `text` - the text of the `JMenuItem`

### constructor:JMenuItem(javax.swing.Action) [NONE]
- #### JMenuItem
      public JMenuItem(Action a)
Creates a menu item whose properties are taken from the specified `Action`. Parameters: `a` - the action of the `JMenuItem` Since: 1.3

### constructor:JMenuItem(java.lang.String, javax.swing.Icon) [NONE]
- #### JMenuItem
      public JMenuItem(String text,
                       Icon icon)
Creates a `JMenuItem` with the specified text and icon. Parameters: `text` - the text of the `JMenuItem` `icon` - the icon of the `JMenuItem`

### constructor:JMenuItem(java.lang.String, int) [NONE]
- #### JMenuItem
      public JMenuItem(String text,
                       int mnemonic)
Creates a `JMenuItem` with the specified text and keyboard mnemonic. Parameters: `text` - the text of the `JMenuItem` `mnemonic` - the keyboard mnemonic for the `JMenuItem`

### method:setModel(javax.swing.ButtonModel) [NONE]
- #### setModel
      public void setModel(ButtonModel newModel)
Sets the model that this button represents. Overrides: `setModel` in class `AbstractButton` Parameters: `newModel` - the new `ButtonModel` See Also: `AbstractButton.getModel()`

### method:init(java.lang.String, javax.swing.Icon) [NONE]
- #### init
      protected void init(String text,
                          Icon icon)
Initializes the menu item with the specified text and icon. Overrides: `init` in class `AbstractButton` Parameters: `text` - the text of the `JMenuItem` `icon` - the icon of the `JMenuItem`

### method:setUI(javax.swing.plaf.MenuItemUI) [NONE]
- #### setUI
      public void setUI(MenuItemUI ui)
Sets the look and feel object that renders this component. Parameters: `ui` - the `JMenuItemUI` L&F object See Also: `UIDefaults.getUI(javax.swing.JComponent)`

### method:updateUI() [NONE]
- #### updateUI
      public void updateUI()
Resets the UI property with a value from the current look and feel. Overrides: `updateUI` in class `AbstractButton` See Also: `JComponent.updateUI()`

### method:getUIClassID() [NONE]
- #### getUIClassID
      public String getUIClassID()
Returns the suffix used to construct the name of the L&F class used to render this component. Overrides: `getUIClassID` in class `JComponent` Returns: the string "MenuItemUI" See Also: `JComponent.getUIClassID()`, `UIDefaults.getUI(javax.swing.JComponent)`

### method:setArmed(boolean) [NONE]
- #### setArmed
      public void setArmed(boolean b)
Identifies the menu item as "armed". If the mouse button is released while it is over this item, the menu's action event will fire. If the mouse button is released elsewhere, the event will not fire and the menu item will be disarmed. Parameters: `b` - true to arm the menu item so it can be selected

### method:isArmed() [NONE]
- #### isArmed
      public boolean isArmed()
Returns whether the menu item is "armed". Returns: true if the menu item is armed, and it can be selected See Also: `setArmed(boolean)`

### method:setEnabled(boolean) [NONE]
- #### setEnabled
      public void setEnabled(boolean b)
Enables or disables the menu item. Overrides: `setEnabled` in class `AbstractButton` Parameters: `b` - true to enable the item See Also: `Component.isEnabled()`, `Component.isLightweight()`

### method:setAccelerator(javax.swing.KeyStroke) [NONE]
- #### setAccelerator
      public void setAccelerator(KeyStroke keyStroke)
Sets the key combination which invokes the menu item's action listeners without navigating the menu hierarchy. It is the UI's responsibility to install the correct action. Note that when the keyboard accelerator is typed, it will work whether or not the menu is currently displayed. Parameters: `keyStroke` - the `KeyStroke` which will serve as an accelerator

### method:getAccelerator() [NONE]
- #### getAccelerator
      public KeyStroke getAccelerator()
Returns the `KeyStroke` which serves as an accelerator for the menu item. Returns: a `KeyStroke` object identifying the accelerator key

### method:configurePropertiesFromAction(javax.swing.Action) [NONE]
- #### configurePropertiesFromAction
      protected void configurePropertiesFromAction(Action a)
Sets the properties on this button to match those in the specified `Action`. Refer to Swing Components Supporting `Action` for more details as to which properties this sets. Overrides: `configurePropertiesFromAction` in class `AbstractButton` Parameters: `a` - the `Action` from which to get the properties, or `null` Since: 1.3 See Also: `Action`, `AbstractButton.setAction(javax.swing.Action)`

### method:actionPropertyChanged(javax.swing.Action, java.lang.String) [NONE]
- #### actionPropertyChanged
      protected void actionPropertyChanged(Action action,
                                           String propertyName)
Updates the button's state in response to property changes in the associated action. This method is invoked from the `PropertyChangeListener` returned from `createActionPropertyChangeListener`. Subclasses do not normally need to invoke this. Subclasses that support additional `Action` properties should override this and `configurePropertiesFromAction`. Refer to the table at Swing Components Supporting `Action` for a list of the properties this method sets. Overrides: `actionPropertyChanged` in class `AbstractButton` Parameters: `action` - the `Action` associated with this button `propertyName` - the name of the property that changed Since: 1.6 See Also: `Action`, `AbstractButton.configurePropertiesFromAction(javax.swing.Action)`

### method:processMouseEvent(java.awt.event.MouseEvent, javax.swing.MenuElement[], javax.swing.MenuSelectionManager) [NONE]
- #### processMouseEvent
      public void processMouseEvent(MouseEvent e,
                                    MenuElement[] path,
                                    MenuSelectionManager manager)
Processes a mouse event forwarded from the `MenuSelectionManager` and changes the menu selection, if necessary, by using the `MenuSelectionManager`'s API. Note: you do not have to forward the event to sub-components. This is done automatically by the `MenuSelectionManager`. Specified by: `processMouseEvent` in interface `MenuElement` Parameters: `e` - a `MouseEvent` `path` - the `MenuElement` path array `manager` - the `MenuSelectionManager`

### method:processKeyEvent(java.awt.event.KeyEvent, javax.swing.MenuElement[], javax.swing.MenuSelectionManager) [NONE]
- #### processKeyEvent
      public void processKeyEvent(KeyEvent e,
                                  MenuElement[] path,
                                  MenuSelectionManager manager)
Processes a key event forwarded from the `MenuSelectionManager` and changes the menu selection, if necessary, by using `MenuSelectionManager`'s API. Note: you do not have to forward the event to sub-components. This is done automatically by the `MenuSelectionManager`. Specified by: `processKeyEvent` in interface `MenuElement` Parameters: `e` - a `KeyEvent` `path` - the `MenuElement` path array `manager` - the `MenuSelectionManager`

### method:processMenuDragMouseEvent(javax.swing.event.MenuDragMouseEvent) [NONE]
- #### processMenuDragMouseEvent
      public void processMenuDragMouseEvent(MenuDragMouseEvent e)
Handles mouse drag in a menu. Parameters: `e` - a `MenuDragMouseEvent` object

### method:processMenuKeyEvent(javax.swing.event.MenuKeyEvent) [NONE]
- #### processMenuKeyEvent
      public void processMenuKeyEvent(MenuKeyEvent e)
Handles a keystroke in a menu. Parameters: `e` - a `MenuKeyEvent` object

### method:fireMenuDragMouseEntered(javax.swing.event.MenuDragMouseEvent) [NONE]
- #### fireMenuDragMouseEntered
      protected void fireMenuDragMouseEntered(MenuDragMouseEvent event)
Notifies all listeners that have registered interest for notification on this event type. Parameters: `event` - a `MenuMouseDragEvent` See Also: `EventListenerList`

### method:fireMenuDragMouseExited(javax.swing.event.MenuDragMouseEvent) [NONE]
- #### fireMenuDragMouseExited
      protected void fireMenuDragMouseExited(MenuDragMouseEvent event)
Notifies all listeners that have registered interest for notification on this event type. Parameters: `event` - a `MenuDragMouseEvent` See Also: `EventListenerList`

### method:fireMenuDragMouseDragged(javax.swing.event.MenuDragMouseEvent) [NONE]
- #### fireMenuDragMouseDragged
      protected void fireMenuDragMouseDragged(MenuDragMouseEvent event)
Notifies all listeners that have registered interest for notification on this event type. Parameters: `event` - a `MenuDragMouseEvent` See Also: `EventListenerList`

### method:fireMenuDragMouseReleased(javax.swing.event.MenuDragMouseEvent) [NONE]
- #### fireMenuDragMouseReleased
      protected void fireMenuDragMouseReleased(MenuDragMouseEvent event)
Notifies all listeners that have registered interest for notification on this event type. Parameters: `event` - a `MenuDragMouseEvent` See Also: `EventListenerList`

### method:fireMenuKeyPressed(javax.swing.event.MenuKeyEvent) [NONE]
- #### fireMenuKeyPressed
      protected void fireMenuKeyPressed(MenuKeyEvent event)
Notifies all listeners that have registered interest for notification on this event type. Parameters: `event` - a `MenuKeyEvent` See Also: `EventListenerList`

### method:fireMenuKeyReleased(javax.swing.event.MenuKeyEvent) [NONE]
- #### fireMenuKeyReleased
      protected void fireMenuKeyReleased(MenuKeyEvent event)
Notifies all listeners that have registered interest for notification on this event type. Parameters: `event` - a `MenuKeyEvent` See Also: `EventListenerList`

### method:fireMenuKeyTyped(javax.swing.event.MenuKeyEvent) [NONE]
- #### fireMenuKeyTyped
      protected void fireMenuKeyTyped(MenuKeyEvent event)
Notifies all listeners that have registered interest for notification on this event type. Parameters: `event` - a `MenuKeyEvent` See Also: `EventListenerList`

### method:menuSelectionChanged(boolean) [NONE]
- #### menuSelectionChanged
      public void menuSelectionChanged(boolean isIncluded)
Called by the `MenuSelectionManager` when the `MenuElement` is selected or unselected. Specified by: `menuSelectionChanged` in interface `MenuElement` Parameters: `isIncluded` - true if this menu item is on the part of the menu path that changed, false if this menu is part of the a menu path that changed, but this particular part of that path is still the same See Also: `MenuSelectionManager.setSelectedPath(MenuElement[])`

### method:getSubElements() [NONE]
- #### getSubElements
      public MenuElement[] getSubElements()
This method returns an array containing the sub-menu components for this menu component. Specified by: `getSubElements` in interface `MenuElement` Returns: an array of `MenuElement`s

### method:getComponent() [NONE]
- #### getComponent
      public Component getComponent()
Returns the `java.awt.Component` used to paint this object. The returned component will be used to convert events and detect if an event is inside a menu component. Specified by: `getComponent` in interface `MenuElement` Returns: the `Component` that paints this menu item

### method:addMenuDragMouseListener(javax.swing.event.MenuDragMouseListener) [NONE]
- #### addMenuDragMouseListener
      public void addMenuDragMouseListener(MenuDragMouseListener l)
Adds a `MenuDragMouseListener` to the menu item. Parameters: `l` - the `MenuDragMouseListener` to be added

### method:removeMenuDragMouseListener(javax.swing.event.MenuDragMouseListener) [NONE]
- #### removeMenuDragMouseListener
      public void removeMenuDragMouseListener(MenuDragMouseListener l)
Removes a `MenuDragMouseListener` from the menu item. Parameters: `l` - the `MenuDragMouseListener` to be removed

### method:getMenuDragMouseListeners() [NONE]
- #### getMenuDragMouseListeners
      public MenuDragMouseListener[] getMenuDragMouseListeners()
Returns an array of all the `MenuDragMouseListener`s added to this JMenuItem with addMenuDragMouseListener(). Returns: all of the `MenuDragMouseListener`s added or an empty array if no listeners have been added Since: 1.4

### method:addMenuKeyListener(javax.swing.event.MenuKeyListener) [NONE]
- #### addMenuKeyListener
      public void addMenuKeyListener(MenuKeyListener l)
Adds a `MenuKeyListener` to the menu item. Parameters: `l` - the `MenuKeyListener` to be added

### method:removeMenuKeyListener(javax.swing.event.MenuKeyListener) [NONE]
- #### removeMenuKeyListener
      public void removeMenuKeyListener(MenuKeyListener l)
Removes a `MenuKeyListener` from the menu item. Parameters: `l` - the `MenuKeyListener` to be removed

### method:getMenuKeyListeners() [NONE]
- #### getMenuKeyListeners
      public MenuKeyListener[] getMenuKeyListeners()
Returns an array of all the `MenuKeyListener`s added to this JMenuItem with addMenuKeyListener(). Returns: all of the `MenuKeyListener`s added or an empty array if no listeners have been added Since: 1.4

### method:paramString() [NONE]
- #### paramString
      protected String paramString()
Returns a string representation of this `JMenuItem`. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be `null`. Overrides: `paramString` in class `AbstractButton` Returns: a string representation of this `JMenuItem`

### method:getAccessibleContext() [NONE]
- #### getAccessibleContext
      public AccessibleContext getAccessibleContext()
Returns the `AccessibleContext` associated with this `JMenuItem`. For `JMenuItem`s, the `AccessibleContext` takes the form of an `AccessibleJMenuItem`. A new AccessibleJMenuItme instance is created if necessary. Specified by: `getAccessibleContext` in interface `Accessible` Overrides: `getAccessibleContext` in class `Component` Returns: an `AccessibleJMenuItem` that serves as the `AccessibleContext` of this `JMenuItem`