AppForegroundListener (Java SE 9 & JDK 9 )
Keywords: java.awt.desktop.AppForegroundListener interface

Module java.desktop
Package java.awt.desktop

## Interface AppForegroundListener

- All Superinterfaces:
    `EventListener`, `SystemEventListener`

      public interface AppForegroundListener
      extends SystemEventListener

  Implementors are notified when the app becomes the foreground app and when it is no longer the foreground app. This notification is useful for hiding and showing transient UI like palette windows which should be hidden when the app is in the background.
  Since:
    9

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `appMovedToBackground​(AppForegroundEvent e)` | Called when the app becomes the background app and another app becomes the foreground app.
    `void` | `appRaisedToForeground​(AppForegroundEvent e)` | Called when the app becomes the foreground app.

- - ### Method Detail

    - #### appRaisedToForeground

          void appRaisedToForeground​(AppForegroundEvent e)

      Called when the app becomes the foreground app.
      Parameters:
        `e` - event

    - #### appMovedToBackground

          void appMovedToBackground​(AppForegroundEvent e)

      Called when the app becomes the background app and another app becomes the foreground app.
      Parameters:
        `e` - event