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getContentPane() and getRootPane()

eugene007
eugene007 asked
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Last Modified: 2012-05-07
Top level containers are such as the JFrame, JPanel and so on. Now we cannot directly add a component to a swing container (top level container). We can only add components to the container ContentPane by calling the getContentPane() method. Also a RootPane cannot have children. Therefore we cannot add components to the RootPane. Instead we can add components to the ContentPane of the RootPane. A RootPane is used to manage the interior of a frame such as the ContentPane, LayeredPane, GlassPane and MenuBar. Is this why we can set a JMenuBar on a RootPane?.
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