javax.servlet.http

## Interface HttpSessionActivationListener

- All Superinterfaces:
    EventListener

      public interface HttpSessionActivationListener
      extends EventListener

  Objects that are bound to a session may listen to container events notifying them that sessions will be passivated and that session will be activated. A container that migrates session between VMs or persists sessions is required to notify all attributes bound to sessions implementing HttpSessionActivationListener.
  Since:
    Servlet 2.3

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `sessionDidActivate(HttpSessionEvent se)` Notification that the session has just been activated.
    `void` | `sessionWillPassivate(HttpSessionEvent se)` Notification that the session is about to be passivated.

- - ### Method Detail

    - #### sessionWillPassivate

          void sessionWillPassivate(HttpSessionEvent se)

      Notification that the session is about to be passivated.

    - #### sessionDidActivate

          void sessionDidActivate(HttpSessionEvent se)

      Notification that the session has just been activated.

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