javax.servlet.http.HttpSessionListener Maven / Gradle / Ivy
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package javax.servlet.http;
import java.util.EventListener;
/**
* Interface for receiving notification events about HttpSession
* lifecycle changes.
*
* In order to receive these notification events, the implementation
* class must be either declared in the deployment descriptor of the web
* application, annotated with {@link javax.servlet.annotation.WebListener},
* or registered via one of the addListener methods defined on
* {@link javax.servlet.ServletContext}.
*
*
Implementations of this interface are invoked at their
* {@link #sessionCreated} method in the order in which they have been
* declared, and at their {@link #sessionDestroyed} method in reverse
* order.
*
* @see HttpSessionEvent
*
* @since Servlet 2.3
*/
public interface HttpSessionListener extends EventListener {
/**
* Receives notification that a session has been created.
*
* @param se the HttpSessionEvent containing the session
*/
public void sessionCreated(HttpSessionEvent se);
/**
* Receives notification that a session is about to be invalidated.
*
* @param se the HttpSessionEvent containing the session
*/
public void sessionDestroyed(HttpSessionEvent se);
}