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package javax.servlet.http;

import java.util.EventListener;


 
 

Causes an object to be notified when it is bound to or unbound from a session. The object is notified by an HttpSessionBindingEvent object. This may be as a result of a servlet programmer explicitly unbinding an attribute from a session, due to a session being invalidated, or due to a session timing out.
Author: Various
See Also:
/** * Causes an object to be notified when it is bound to * or unbound from a session. The object is notified * by an {@link HttpSessionBindingEvent} object. This may be as a result * of a servlet programmer explicitly unbinding an attribute from a session, * due to a session being invalidated, or due to a session timing out. * * * @author Various * * @see HttpSession * @see HttpSessionBindingEvent * */
public interface HttpSessionBindingListener extends EventListener {
Notifies the object that it is being bound to a session and identifies the session.
Params:
  • event – the event that identifies the session
See Also:
Implementation Requirements: The default implementation takes no action.
/** * * Notifies the object that it is being bound to * a session and identifies the session. * * @implSpec * The default implementation takes no action. * * @param event the event that identifies the * session * * @see #valueUnbound * */
default public void valueBound(HttpSessionBindingEvent event) {}
Notifies the object that it is being unbound from a session and identifies the session.
Params:
  • event – the event that identifies the session
See Also:
Implementation Requirements: The default implementation takes no action.
/** * * Notifies the object that it is being unbound * from a session and identifies the session. * * @implSpec * The default implementation takes no action. * * @param event the event that identifies * the session * * @see #valueBound * */
default public void valueUnbound(HttpSessionBindingEvent event) {} }