[Chapter 10] 10.2 MenuContainer

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## 10.2 MenuContainer

`MenuContainer` is an interface implemented by the three menu containers: `Frame`, `Menu`, and `MenuBar`; Java 1.1 adds a fourth, `Component`. You should never need to worry about the interface since it does all its work behind the scenes for you. You will notice that the interface does not define an `add()` method. Each type of `MenuContainer` defines its own `add()` method to add menus to itself.

### MenuContainer Methods

public abstract Font getFont ()

  The `getFont()` method should provide an object's font. `MenuItem` implements this method, so all of its subclasses inherit it. `MenuBar` implements it, too, while `Frame` gets the method from `Component`.

public abstract boolean postEvent (Event e)

  The `postEvent()` method should post `Event` `e` to the object. `MenuComponent` implements this method, so all of its subclasses inherit it. (`Frame` gets the method from `Component`.)

public abstract void remove (MenuComponent component)

  The `remove()` method should remove the `MenuComponent` `component` from the object. If `component` was not contained within the object, nothing should happen.

MenuComponent |  | MenuShortcut