SystemSleepListener (Java SE 26 & JDK 26)
Description: declaration: module: java.desktop, package: java.awt.desktop, interface: SystemSleepListener
Keywords: java.awt.desktop.SystemSleepListener interface

# Interface SystemSleepListener

All Superinterfaces:
  `EventListener, SystemEventListener`

public interface SystemSleepListener extends SystemEventListener
Implementors receive notification as the system is entering sleep, and after the system wakes.

This notification is useful for disconnecting from network services prior to sleep, or re-establishing a connection if the network configuration has changed during sleep.

Since:
  9

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `systemAboutToSleep(SystemSleepEvent e)`
  Called when the system is about to sleep.
  `void`
  `systemAwoke(SystemSleepEvent e)`
  Called after the system has awoken from sleeping.

- ## Method Details

  - ### systemAboutToSleep

    void systemAboutToSleep(SystemSleepEvent e)
    Called when the system is about to sleep. Note: This message may not be delivered prior to the actual system sleep, and may be processed after the corresponding wake has occurred.
    Parameters:
      `e` - the system sleep event

  - ### systemAwoke

    void systemAwoke(SystemSleepEvent e)
    Called after the system has awoken from sleeping.
    Parameters:
      `e` - the system sleep event