java.lang.Object java.awt.MenuComponent java.awt.MenuBar
The MenuBar class encapsulates the platform's concept of a menu bar bound to a frame. In order to associate the menu bar with a Frame object, call the frame's setMenuBar method.
This is what a menu bar might look like:
ALIGN=center HSPACE=10 VSPACE=7>
A menu bar handles keyboard shortcuts for menu items, passing them along to its child menus. (Keyboard shortcuts, which are optional, provide the user with an alternative to the mouse for invoking a menu item and the action that is associated with it.) Each menu item can maintain an instance of MenuShortcut. The MenuBar class defines several methods, shortcuts() and getShortcutMenuItem(java.awt.MenuShortcut) that retrieve information about the shortcuts a given menu bar is managing.
Nested Class Summary | |
---|---|
protected class |
MenuBar.AccessibleAWTMenuBar
Inner class of MenuBar used to provide default support for accessibility. |
Nested classes inherited from class java.awt. MenuComponent |
---|
MenuComponent.AccessibleAWTMenuComponent |
Constructor Summary | |
---|---|
MenuBar
() Creates a new menu bar. |
Method Summary | |
---|---|
Menu |
add
(
Menu
m) Adds the specified menu to the menu bar. |
void |
addNotify
() Creates the menu bar's peer. |
int |
countMenus
() Deprecated. As of JDK version 1.1, replaced by getMenuCount(). |
void |
deleteShortcut
(
MenuShortcut
s) Deletes the specified menu shortcut. |
AccessibleContext |
getAccessibleContext
() Gets the AccessibleContext associated with this MenuBar. |
Menu |
getHelpMenu
() Gets the help menu on the menu bar. |
Menu |
getMenu
(int i) Gets the specified menu. |
int |
getMenuCount
() Gets the number of menus on the menu bar. |
MenuItem |
getShortcutMenuItem
(
MenuShortcut
s) Gets the instance of MenuItem associated with the specified MenuShortcut object, or null if none of the menu items being managed by this menu bar is associated with the specified menu shortcut. |
void |
remove
(int index) Removes the menu located at the specified index from this menu bar. |
void |
remove
(
MenuComponent
m) Removes the specified menu component from this menu bar. |
void |
removeNotify
() Removes the menu bar's peer. |
void |
setHelpMenu
(
Menu
m) Sets the specified menu to be this menu bar's help menu. |
Enumeration |
shortcuts
() Gets an enumeration of all menu shortcuts this menu bar is managing. |
Methods inherited from class java.awt. MenuComponent |
---|
dispatchEvent , getFont , getName , getParent , getPeer , getTreeLock , paramString , postEvent , processEvent , setFont , setName , toString |
Methods inherited from class java.lang. Object |
---|
clone , equals , finalize , getClass , hashCode , notify , notifyAll , wait , wait , wait |
Methods inherited from interface java.awt. MenuContainer |
---|
getFont , postEvent |
Constructor Detail |
---|
public MenuBar() throws HeadlessException
Method Detail |
---|
public void addNotify()
public void removeNotify()
public Menu getHelpMenu()
public void setHelpMenu(Menu m)
public Menu add(Menu m)
public void remove(int index)
public void remove(MenuComponent m)
public int getMenuCount()
public int countMenus()
public Menu getMenu(int i)
public Enumeration shortcuts()
public MenuItem getShortcutMenuItem(MenuShortcut s)
public void deleteShortcut(MenuShortcut s)
public AccessibleContext getAccessibleContext()