WindowStateListener (Java SE 11 & JDK 11 )
Keywords: java.awt.event.WindowStateListener interface

Module java.desktop
Package java.awt.event

## Interface WindowStateListener

- All Superinterfaces:
    `EventListener`
  All Known Implementing Classes:
    `AWTEventMulticaster`, `BasicToolBarUI.FrameListener`, `JMenu.WinListener`, `WindowAdapter`

      public interface WindowStateListener
      extends EventListener

  The listener interface for receiving window state events.

  The class that is interested in processing a window state event either implements this interface (and all the methods it contains) or extends the abstract `WindowAdapter` class (overriding only the methods of interest).

  The listener object created from that class is then registered with a window using the `Window`'s `addWindowStateListener` method. When the window's state changes by virtue of being iconified, maximized etc., the `windowStateChanged` method in the listener object is invoked, and the `WindowEvent` is passed to it.

  Since:
    1.4
  See Also:
    `WindowAdapter`, `WindowEvent`

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `windowStateChanged​(WindowEvent e)` | Invoked when window state is changed.

- - ### Method Detail

    - #### windowStateChanged

          void windowStateChanged​(WindowEvent e)

      Invoked when window state is changed.
      Parameters:
        `e` - the event to be processed