Key Swing Containers
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JFrame
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Is a window with a title bar, menu bar, and border(inset)
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Can be iconified
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Is free-floating
Ie cannot be nested inside another container
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Consists of several layers
Has a JRootPane
Each JRootPane has a jLayeredPane, JMenuBar, JContentPane, and JGlassPane
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Add components to the content pane
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JPanel
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Is A generic container, always inside some other container
Cannot float freely on the screen
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Used to group controls together
You can nest several JPanels inside another JPanel
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Can also e used as an area to draw on
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You must extend the class, and override pointComponent()
Layout Manager
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Are classes that determine where components are placed inside a container
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Do not determine exact placement, but implement a general layout policy
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If you resize the container, the components may be repositioned or change in size
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Use setLayout() to set a container’s layout manager
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Eg: myContainer.setLayout(new FlowLayout());
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Set the layout first, then add components
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With some layouts, the order in which you add is important
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FlowLayout
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- Fall '09
- Li
- container, new JButton, Layout manager, size
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