Since 1.4 is missing for WINDOW_GAINED_FOCUS and WINDOW_LOST_FOCUS events in java.awt.event.WindowEvent


Here is the related url:

http://java.sun.com/j2se/1.4/docs/api/java/awt/event/WindowEvent.html


WINDOW_GAINED_FOCUS

public static final int WINDOW_GAINED_FOCUS

The window-gained-focus event type. This event is delivered when the Window becomes the focused Window, which means that the Window, or one of its subcomponents, will receive keyboard events.


WINDOW_LOST_FOCUS

public static final int WINDOW_LOST_FOCUS

The window-lost-focus event type. This event is delivered when a Window is no longer the focused Window, which means keyboard events will no longer be delivered to the Window or any of its subcomponents.