The Java Developers Almanac 1.4

e613. Modifying the Focus Traversal Order

    JFrame frame = new JFrame();
    JButton component1 = new JButton("1");
    JButton component2 = new JButton("2");
    JButton component3 = new JButton("3");
    
    // By default, the focus traversal order is the same as the insertion order
    frame.getContentPane().setLayout(new FlowLayout());
    frame.getContentPane().add(component1);
    frame.getContentPane().add(component2);
    frame.getContentPane().add(component3);
    
    // Change the order from 1,2,3 to 1,3,2
    component1.setNextFocusableComponent(component3);
    component3.setNextFocusableComponent(component2);
    component2.setNextFocusableComponent(component1);
    
    // Restore the order to 1,2,3
    component1.setNextFocusableComponent(null);
    component2.setNextFocusableComponent(null);
    component3.setNextFocusableComponent(null);

Related Examples

e606. Determining Which Component or Window Has the Focus
e607. Preventing a Component from Gaining the Focus
e608. Preventing a Window from Gaining the Focus
e609. Listening to All Focus Changes Between Components in an Application
e610. Setting Focus Traversal Keys in a Component
e611. Setting Focus Traversal Keys for the Entire Application
e612. Moving the Focus to the Next or Previous Focusable Component
e614. Setting the Initial Focused Component in a Window
e615. Finding the Next Focusable Component
e616. Determining If a Focus Lost Is Temporary or Permanent
e617. Determining the Opposite Component of a Focus Event
e618. Validating a JTextField When Permanently Losing the Focus
e619. Removing the Focus from the Application
e620. Activating a Keystroke When Any Component in the Window Has Focus
e621. Activating a Keystroke When Any Child Component Has Focus

See also: Colors    Components    Containers    Cursors    Drawing    Events    Frames    GridBagLayout    Images    Shapes    Simulating Events    Text    The Screen

© 2002 Addison-Wesley.