Class java.awt.event.WindowAdapter

Added interfaces java.awt.event.WindowFocusListener, java.awt.event.WindowStateListener.

Added Methods
void windowGainedFocus(WindowEvent)	Invoked when the Window is set to be the focused Window which means that the Window or one of its subcomponents will receive keyboard events.
void windowLostFocus(WindowEvent)	Invoked when the Window is no longer the focused Window which means that keyboard events will no longer be delivered to the Window or any of its subcomponents.
void windowStateChanged(WindowEvent)	Invoked when a window state is changed.