A menu is a list of choices. A menu bar displays a list of top-level menu choices. In Java, for implementing
menu, a number of classes are provided like Menu, MenuBar and MenuItem.
A Menubar contains a number of instances of Menu each of which further contains a number of
instances of MenuItem . Only Frames can have menu since they implement the MenuContainer
interface. Therefore, an applet must create a frame in order to use menu.
A Menu class has MenuItem as its super class. A Menu object is a pull-down menu component that is
deployed from a menu bar. Each item in a menu must belong to the ...
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