e606. Determining Which Component or Window Has the Focus
// null is returned if none of the components in this application has the focus
Component compFocusOwner =
KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
// null is returned if none of the windows in this application has the focus
Window windowFocusOwner =
KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusedWindow();
// Use this method to determine whether a particular component has the focus
boolean b = component.isFocusOwner();
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
e613.
Modifying the Focus Traversal Order
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
© 2002 Addison-Wesley.
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