e606. Determining Which Component or Window Has the Focus

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    // 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();

 

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e606. Determining Which Component or Window Has the Focus