JavaTM 2 Platform
Std. Ed. v1.4.2

javax.swing
Class JMenuItem

java.lang.Object
  extended byjava.awt.Component
      extended byjava.awt.Container
          extended byjavax.swing.JComponent
              extended byjavax.swing.AbstractButton
                  extended byjavax.swing.JMenuItem
All Implemented Interfaces:
Accessible, ImageObserver, ItemSelectable, MenuContainer, MenuElement, Serializable, 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.

For further documentation and for examples, see How to Use Menus in The Java Tutorial. For the keyboard keys used by this component in the standard Look and Feel (L&F) renditions, see the JMenuItem key assignments.

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 JavaBeansTM has been added to the java.beans package. Please see XMLEncoder.

See Also:
JPopupMenu, JMenu, JCheckBoxMenuItem, JRadioButtonMenuItem

Nested Class Summary
protected  class JMenuItem.AccessibleJMenuItem
          This class implements accessibility support for the JMenuItem class.
 
Nested classes inherited from class javax.swing.AbstractButton
AbstractButton.AccessibleAbstractButton, AbstractButton.ButtonChangeListener
 
Nested classes inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent
 
Nested classes inherited from class java.awt.Container
Container.AccessibleAWTContainer
 
Nested classes inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy
 
Field Summary
 
Fields inherited from class javax.swing.AbstractButton
actionListener, BORDER_PAINTED_CHANGED_PROPERTY, changeEvent, changeListener, CONTENT_AREA_FILLED_CHANGED_PROPERTY, DISABLED_ICON_CHANGED_PROPERTY, DISABLED_SELECTED_ICON_CHANGED_PROPERTY, FOCUS_PAINTED_CHANGED_PROPERTY, HORIZONTAL_ALIGNMENT_CHANGED_PROPERTY, HORIZONTAL_TEXT_POSITION_CHANGED_PROPERTY, ICON_CHANGED_PROPERTY, itemListener, MARGIN_CHANGED_PROPERTY, MNEMONIC_CHANGED_PROPERTY, model, MODEL_CHANGED_PROPERTY, PRESSED_ICON_CHANGED_PROPERTY, ROLLOVER_ENABLED_CHANGED_PROPERTY, ROLLOVER_ICON_CHANGED_PROPERTY, ROLLOVER_SELECTED_ICON_CHANGED_PROPERTY, SELECTED_ICON_CHANGED_PROPERTY, TEXT_CHANGED_PROPERTY, VERTICAL_ALIGNMENT_CHANGED_PROPERTY, VERTICAL_TEXT_POSITION_CHANGED_PROPERTY
 
Fields inherited from class javax.swing.JComponent
accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW
 
Fields inherited from class java.awt.Component
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
 
Fields inherited from interface javax.swing.SwingConstants
BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST
 
Fields inherited from interface java.awt.image.ImageObserver
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH
 
Constructor Summary
JMenuItem()
          Creates a JMenuItem with no set text or icon.
JMenuItem(Action a)
          Creates a menu item whose properties are taken from the specified Action.
JMenuItem(Icon icon)
          Creates a JMenuItem with the specified icon.
JMenuItem(String text)
          Creates a JMenuItem with the specified text.
JMenuItem(String text, Icon icon)
          Creates a JMenuItem with the specified text and icon.
JMenuItem(String text, int mnemonic)
          Creates a JMenuItem with the specified text and keyboard mnemonic.
 
Method Summary
 void addMenuDragMouseListener(MenuDragMouseListener l)
          Adds a MenuDragMouseListener to the menu item.
 void addMenuKeyListener(MenuKeyListener l)
          Adds a MenuKeyListener to the menu item.
protected  void configurePropertiesFromAction(Action a)
          Factory method which sets the ActionEvent source's properties according to values from the Action instance.
protected  PropertyChangeListener createActionPropertyChangeListener(Action a)
          Factory method which creates the PropertyChangeListener used to update the ActionEvent source as properties change on its Action instance.
protected  void fireMenuDragMouseDragged(MenuDragMouseEvent event)
          Notifies all listeners that have registered interest for notification on this event type.
protected  void fireMenuDragMouseEntered(MenuDragMouseEvent event)
          Notifies all listeners that have registered interest for notification on this event type.
protected  void fireMenuDragMouseExited(MenuDragMouseEvent event)
          Notifies all listeners that have registered interest for notification on this event type.
protected  void fireMenuDragMouseReleased(MenuDragMouseEvent event)
          Notifies all listeners that have registered interest for notification on this event type.
protected  void fireMenuKeyPressed(MenuKeyEvent event)
          Notifies all listeners that have registered interest for notification on this event type.
protected  void fireMenuKeyReleased(MenuKeyEvent event)
          Notifies all listeners that have registered interest for notification on this event type.
protected  void fireMenuKeyTyped(MenuKeyEvent event)
          Notifies all listeners that have registered interest for notification on this event type.
 KeyStroke getAccelerator()
          Returns the KeyStroke which serves as an accelerator for the menu item.
 AccessibleContext getAccessibleContext()
          Returns the AccessibleContext associated with this JMenuItem.
 Component getComponent()
          Returns the java.awt.Component used to paint this object.
 MenuDragMouseListener[] getMenuDragMouseListeners()
          Returns an array of all the MenuDragMouseListeners added to this JMenuItem with addMenuDragMouseListener().
 MenuKeyListener[] getMenuKeyListeners()
          Returns an array of all the MenuKeyListeners added to this JMenuItem with addMenuKeyListener().
 MenuElement[] getSubElements()
          This method returns an array containing the sub-menu components for this menu component.
 String getUIClassID()
          Returns the suffix used to construct the name of the L&F class used to render this component.
protected  void init(String text, Icon icon)
          Initializes the menu item with the specified text and icon.
 boolean isArmed()
          Returns whether the menu item is "armed".
 void menuSelectionChanged(boolean isIncluded)
          Called by the MenuSelectionManager when the MenuElement is selected or unselected.
protected  String paramString()
          Returns a string representation of this JMenuItem.
 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.
 void processMenuDragMouseEvent(MenuDragMouseEvent e)
          Handles mouse drag in a menu.
 void processMenuKeyEvent(MenuKeyEvent e)
          Handles a keystroke in a menu.
 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.
 void removeMenuDragMouseListener(MenuDragMouseListener l)
          Removes a MenuDragMouseListener from the menu item.
 void removeMenuKeyListener(MenuKeyListener l)
          Removes a MenuKeyListener from the menu item.
 void setAccelerator(KeyStroke keyStroke)
          Sets the key combination which invokes the menu item's action listeners without navigating the menu hierarchy.
 void setArmed(boolean b)
          Identifies the menu item as "armed".
 void setEnabled(boolean b)
          Enables or disables the menu item.
 void setUI(MenuItemUI ui)
          Sets the look and feel object that renders this component.
 void updateUI()
          Resets the UI property with a value from the current look and feel.
 
Methods inherited from class javax.swing.AbstractButton
addActionListener, addChangeListener, addItemListener, checkHorizontalKey, checkVerticalKey, createActionListener, createChangeListener, createItemListener, doClick, doClick, fireActionPerformed, fireItemStateChanged, fireStateChanged, getAction, getActionCommand, getActionListeners, getChangeListeners, getDisabledIcon, getDisabledSelectedIcon, getDisplayedMnemonicIndex, getHorizontalAlignment, getHorizontalTextPosition, getIcon, getIconTextGap, getItemListeners, getLabel, getMargin, getMnemonic, getModel, getMultiClickThreshhold, getPressedIcon, getRolloverIcon, getRolloverSelectedIcon, getSelectedIcon, getSelectedObjects, getText, getUI, getVerticalAlignment, getVerticalTextPosition, imageUpdate, isBorderPainted, isContentAreaFilled, isFocusPainted, isRolloverEnabled, isSelected, paintBorder, removeActionListener, removeChangeListener, removeItemListener, setAction, setActionCommand, setBorderPainted, setContentAreaFilled, setDisabledIcon, setDisabledSelectedIcon, setDisplayedMnemonicIndex, setFocusPainted, setHorizontalAlignment, setHorizontalTextPosition, setIcon, setIconTextGap, setLabel, setMargin, setMnemonic, setMnemonic, setModel, setMultiClickThreshhold, setPressedIcon, setRolloverEnabled, setRolloverIcon, setRolloverSelectedIcon, setSelected, setSelectedIcon, setText, setUI, setVerticalAlignment, setVerticalTextPosition
 
Methods inherited from class javax.swing.JComponent
addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paint, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setFont, setForeground, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update
 
Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, addImpl, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree
 
Methods inherited from class java.awt.Component
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

JMenuItem

public JMenuItem()
Creates a JMenuItem with no set text or icon.


JMenuItem

public JMenuItem(Icon icon)
Creates a JMenuItem with the specified icon.

Parameters:
icon - the icon of the JMenuItem

JMenuItem

public JMenuItem(String text)
Creates a JMenuItem with the specified text.

Parameters:
text - the text of the JMenuItem

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

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

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 Detail

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

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)

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()

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)

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

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)

setEnabled

public void setEnabled(boolean b)
Enables or disables the menu item.

Overrides:
setEnabled in class AbstractButton
Parameters:
b - true to enable the item

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

getAccelerator

public KeyStroke getAccelerator()
Returns the KeyStroke which serves as an accelerator for the menu item.

Returns:
a KeyStroke object identifying the accelerator key

configurePropertiesFromAction

protected void configurePropertiesFromAction(Action a)
Factory method which sets the ActionEvent source's properties according to values from the Action instance. The properties which are set may differ for subclasses. By default, this method sets the same properties as AbstractButton.configurePropertiesFromAction(), plus Accelerator.

Overrides:
configurePropertiesFromAction in class AbstractButton
Parameters:
a - the Action from which to get the properties, or null
Since:
1.3
See Also:
Action

createActionPropertyChangeListener

protected PropertyChangeListener createActionPropertyChangeListener(Action a)
Factory method which creates the PropertyChangeListener used to update the ActionEvent source as properties change on its Action instance. Subclasses may override this in order to provide their own PropertyChangeListener if the set of properties which should be kept up to date differs.

Note that PropertyChangeListeners should avoid holding strong references to the ActionEvent source, as this may hinder garbage collection of the ActionEvent source and all components in its containment hierarchy.

Overrides:
createActionPropertyChangeListener in class AbstractButton
Parameters:
a - the Action from which to get the properties, or null
Since:
1.3
See Also:
Action

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

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

processMenuDragMouseEvent

public void processMenuDragMouseEvent(MenuDragMouseEvent e)
Handles mouse drag in a menu.

Parameters:
e - a MenuDragMouseEvent object

processMenuKeyEvent

public void processMenuKeyEvent(MenuKeyEvent e)
Handles a keystroke in a menu.

Parameters:
e - a MenuKeyEvent object

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

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

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

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

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

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

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

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[])

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 MenuElements

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

addMenuDragMouseListener

public void addMenuDragMouseListener(MenuDragMouseListener l)
Adds a MenuDragMouseListener to the menu item.

Parameters:
l - the MenuDragMouseListener to be added

removeMenuDragMouseListener

public void removeMenuDragMouseListener(MenuDragMouseListener l)
Removes a MenuDragMouseListener from the menu item.

Parameters:
l - the MenuDragMouseListener to be removed

getMenuDragMouseListeners

public MenuDragMouseListener[] getMenuDragMouseListeners()
Returns an array of all the MenuDragMouseListeners added to this JMenuItem with addMenuDragMouseListener().

Returns:
all of the MenuDragMouseListeners added or an empty array if no listeners have been added
Since:
1.4

addMenuKeyListener

public void addMenuKeyListener(MenuKeyListener l)
Adds a MenuKeyListener to the menu item.

Parameters:
l - the MenuKeyListener to be added

removeMenuKeyListener

public void removeMenuKeyListener(MenuKeyListener l)
Removes a MenuKeyListener from the menu item.

Parameters:
l - the MenuKeyListener to be removed

getMenuKeyListeners

public MenuKeyListener[] getMenuKeyListeners()
Returns an array of all the MenuKeyListeners added to this JMenuItem with addMenuKeyListener().

Returns:
all of the MenuKeyListeners added or an empty array if no listeners have been added
Since:
1.4

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

getAccessibleContext

public AccessibleContext getAccessibleContext()
Returns the AccessibleContext associated with this JMenuItem. For JMenuItems, 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 JComponent
Returns:
an AccessibleJMenuItem that serves as the AccessibleContext of this JMenuItem

JavaTM 2 Platform
Std. Ed. v1.4.2

Submit a bug or feature
For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2003 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.


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