Menu class in java

Menu class in java

A Menu object is a pull-down menu component that is deployed from a menu bar. A menu can optionally be a tear-off menu. A tear-off menu can be opened and dragged away from its parent menu bar or menu. It remains on the screen after the mouse button has been released. The mechanism for tearing off a menu is platform dependent, since the look and feel of the tear-off menu is determined by its peer. On platforms that do not support tear-off menus, the tear-off property is ignored. Each item in a menu must belong to the MenuItem class. It can be an instance of MenuItem , a submenu (an instance of Menu ), or a check box (an instance of CheckboxMenuItem ).

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.MenuItem

Nested classes/interfaces inherited from class java.awt.MenuComponent

Constructor Summary

Method Summary

Methods inherited from class java.awt.MenuItem

Methods inherited from class java.awt.MenuComponent

Methods inherited from class java.lang.Object

Methods inherited from interface java.awt.MenuContainer

Constructor Detail

Menu

Menu

public Menu(String label) throws HeadlessException

Menu

public Menu(String label, boolean tearOff) throws HeadlessException

Constructs a new menu with the specified label, indicating whether the menu can be torn off. Tear-off functionality may not be supported by all implementations of AWT. If a particular implementation doesn’t support tear-off menus, this value is silently ignored.

Method Detail

addNotify

Creates the menu’s peer. The peer allows us to modify the appearance of the menu without changing its functionality.

removeNotify

Removes the menu’s peer. The peer allows us to modify the appearance of the menu without changing its functionality.

isTearOff

Indicates whether this menu is a tear-off menu. Tear-off functionality may not be supported by all implementations of AWT. If a particular implementation doesn’t support tear-off menus, this value is silently ignored.

getItemCount

countItems

getItem

add

Adds the specified menu item to this menu. If the menu item has been part of another menu, removes it from that menu.

add

insert

insert

Inserts a menu item with the specified label into this menu at the specified position. This is a convenience method for insert(menuItem, index) .

addSeparator

insertSeparator

public void insertSeparator(int index)

remove

public void remove(int index)

remove

removeAll

paramString

Returns a string representing the state of this Menu . 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 .

getAccessibleContext

Gets the AccessibleContext associated with this Menu. For menus, the AccessibleContext takes the form of an AccessibleAWTMenu. A new AccessibleAWTMenu instance is created if necessary.

Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2023, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.

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Class Menu

A menu can optionally be a tear-off menu. A tear-off menu can be opened and dragged away from its parent menu bar or menu. It remains on the screen after the mouse button has been released. The mechanism for tearing off a menu is platform dependent, since the look and feel of the tear-off menu is determined by its peer. On platforms that do not support tear-off menus, the tear-off property is ignored.

Each item in a menu must belong to the MenuItem class. It can be an instance of MenuItem , a submenu (an instance of Menu ), or a check box (an instance of CheckboxMenuItem ).

Nested Class Summary

Nested classes/interfaces declared in class java.awt.MenuItem

Nested classes/interfaces declared in class java.awt.MenuComponent

Constructor Summary

Method Summary

Methods declared in class java.awt.MenuItem

Methods declared in class java.awt.MenuComponent

Methods declared in class java.lang.Object

Methods declared in interface java.awt.MenuContainer

Constructor Details

Menu

Menu

Menu

Constructs a new menu with the specified label, indicating whether the menu can be torn off. Tear-off functionality may not be supported by all implementations of AWT. If a particular implementation doesn’t support tear-off menus, this value is silently ignored.

Method Details

addNotify

Creates the menu’s peer. The peer allows us to modify the appearance of the menu without changing its functionality.

removeNotify

Removes the menu’s peer. The peer allows us to modify the appearance of the menu without changing its functionality.

isTearOff

Indicates whether this menu is a tear-off menu. Tear-off functionality may not be supported by all implementations of AWT. If a particular implementation doesn’t support tear-off menus, this value is silently ignored.

getItemCount

countItems

getItem

add

Adds the specified menu item to this menu. If the menu item has been part of another menu, removes it from that menu.

add

insert

insert

Inserts a menu item with the specified label into this menu at the specified position. This is a convenience method for insert(menuItem, index) .

addSeparator

insertSeparator

remove

remove

removeAll

paramString

Returns a string representing the state of this Menu . 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 .

getAccessibleContext

Gets the AccessibleContext associated with this Menu. For menus, the AccessibleContext takes the form of an AccessibleAWTMenu. A new AccessibleAWTMenu instance is created if necessary.

Report a bug or suggest an enhancement
For further API reference and developer documentation see the Java SE Documentation, which contains more detailed, developer-targeted descriptions with conceptual overviews, definitions of terms, workarounds, and working code examples. Other versions.
Java is a trademark or registered trademark of Oracle and/or its affiliates in the US and other countries.
Copyright © 1993, 2023, Oracle and/or its affiliates, 500 Oracle Parkway, Redwood Shores, CA 94065 USA.
All rights reserved. Use is subject to license terms and the documentation redistribution policy.

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