22.8 JTabbedPane
A JTabbedPane arranges GUI components into layers, of which only one is visible at a time. Users access each layer via a tab—similar to folders in a file cabinet. When the user clicks a tab, the appropriate layer is displayed. The tabs appear at the top by default but also can be positioned at the left, right or bottom of the JTabbedPane. Any component can be placed on a tab. If the component is a container, such as a panel, it can use any layout manager to lay out several components on the tab. Class JTabbedPane is a subclass of JComponent. The application in Figs. 22.13–22.14 creates one tabbed pane with three tabs. Each tab displays one of the JPanels—panel1, panel2 or panel3.
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