public interface HttpSessionBindingListener
extends java.util.EventListener
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.HttpSession, 
HttpSessionBindingEvent| Modifier and Type | Method and Description | 
|---|---|
| default void | valueBound(HttpSessionBindingEvent event)Notifies the object that it is being bound to a session and identifies the session. | 
| default void | valueUnbound(HttpSessionBindingEvent event)Notifies the object that it is being unbound from a session and identifies the session. | 
default void valueBound(HttpSessionBindingEvent event)
event - the event that identifies the sessionvalueUnbound(jakarta.servlet.http.HttpSessionBindingEvent)default void valueUnbound(HttpSessionBindingEvent event)
event - the event that identifies the sessionvalueBound(jakarta.servlet.http.HttpSessionBindingEvent)