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

Module java.desktop
Package java.awt.desktop

## Interface SystemEventListener

- All Superinterfaces:
    `EventListener`
  All Known Subinterfaces:
    `AppForegroundListener`, `AppHiddenListener`, `AppReopenedListener`, `ScreenSleepListener`, `SystemSleepListener`, `UserSessionListener`

      public interface SystemEventListener
      extends EventListener

  Common interface for all event listener sub-types. Implementors may implement multiple sub-types, but only need to call `Desktop.addAppEventListener(SystemEventListener)` once to receive all notifications.
  Since:
    9