javax.swing
Class JMenuBar

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--javax.swing.JComponent
                    |
                    +--javax.swing.JMenuBar

All Implemented Interfaces:

Accessible, ImageObserver, MenuContainer, MenuElement, Serializable

Direct Known Subclasses:

BasicInternalFrameTitlePane.SystemMenuBar

public class JMenuBar

extends JComponent

implements Accessible, MenuElement

An implementation of a menu bar. You add JMenu objects to the menu bar to construct a menu. When the user selects a JMenu object, its associated JPopupMenu is displayed, allowing the user to select one of the JMenuItems on it.

For information and examples of using menu bars see How to Use Menus, a section in The Java Tutorial. For the keyboard keys used by this component in the standard Look and Feel (L&F) renditions, see the JMenuBar 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 JavaBeans^TM has been added to the java.beans package. Please see XMLEncoder.

See Also:

JMenu, JPopupMenu, JMenuItem

Nested Class Summary
protected  class	JMenuBar.AccessibleJMenuBar     This class implements accessibility support for the JMenuBar class.

 

Nested classes inherited from class javax.swing.JComponent

 

Nested classes inherited from class java.awt.Container

 

Nested classes inherited from class java.awt.Component

Component.BltBufferStrategy, Component.FlipBufferStrategy

 

Field Summary

 

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 java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

 

Constructor Summary
JMenuBar()     Creates a new menu bar.

 

Method Summary
JMenu	add(JMenu c)     Appends the specified menu to the end of the menu bar.
void	addNotify()     Overrides JComponent.addNotify to register this menu bar with the current keyboard manager.
AccessibleContext	getAccessibleContext()     Gets the AccessibleContext associated with this JMenuBar.
Component	getComponent()     Implemented to be a MenuElement.
Component	getComponentAtIndex(int i)     Deprecated. replaced by getComponent(int i)
int	getComponentIndex(Component c)     Returns the index of the specified component.
JMenu	getHelpMenu()     Gets the help menu for the menu bar.
Insets	getMargin()     Returns the margin between the menubar's border and its menus.
JMenu	getMenu(int index)     Returns the menu at the specified position in the menu bar.
int	getMenuCount()     Returns the number of items in the menu bar.
SingleSelectionModel	getSelectionModel()     Returns the model object that handles single selections.
MenuElement[]	getSubElements()     Implemented to be a MenuElement -- returns the menus in this menu bar.
MenuBarUI	getUI()     Returns the menubar's current UI.
String	getUIClassID()     Returns the name of the L&F class that renders this component.
boolean	isBorderPainted()     Returns true if the menu bars border should be painted.
boolean	isSelected()     Returns true if the menu bar currently has a component selected.
void	menuSelectionChanged(boolean isIncluded)     Implemented to be a MenuElement -- does nothing.
protected  void	paintBorder(Graphics g)     Paints the menubar's border if BorderPainted property is true.
protected  String	paramString()     Returns a string representation of this JMenuBar.
protected  boolean	processKeyBinding(KeyStroke ks, KeyEvent e, int condition, boolean pressed)     Subclassed to check all the child menus.
void	processKeyEvent(KeyEvent e, MenuElement[] path, MenuSelectionManager manager)     Implemented to be a MenuElement -- does nothing.
void	processMouseEvent(MouseEvent event, MenuElement[] path, MenuSelectionManager manager)     Implemented to be a MenuElement -- does nothing.
void	removeNotify()     Overrides JComponent.removeNotify to unregister this menu bar with the current keyboard manager.
void	setBorderPainted(boolean b)     Sets whether the border should be painted.
void	setHelpMenu(JMenu menu)     Sets the help menu that appears when the user selects the "help" option in the menu bar.
void	setMargin(Insets m)     Sets the margin between the menubar's border and its menus.
void	setSelected(Component sel)     Sets the currently selected component, producing a a change to the selection model.
void	setSelectionModel(SingleSelectionModel model)     Sets the model object to handle single selections.
void	setUI(MenuBarUI ui)     Sets the L&F 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.JComponent

addAncestorListener, 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, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls,