Top Description Methods
jakarta.servlet.http

public Interface HttpSessionAttributeListener

extends EventListener
Imports
java.util.EventListener

Interface for receiving notification events about HttpSession attribute 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 jakarta.servlet.annotation.WebListener, or registered via one of the addListener methods defined on jakarta.servlet.ServletContext.

The order in which implementations of this interface are invoked is unspecified.

Since
Servlet 2.3

Method Summary

Modifier and TypeMethod and Description
public default void
attributeAdded(HttpSessionBindingEvent
the HttpSessionBindingEvent containing the session and the name and value of the attribute that was added
event
)

Receives notification that an attribute has been added to a session.

public default void
attributeRemoved(HttpSessionBindingEvent
the HttpSessionBindingEvent containing the session and the name and value of the attribute that was removed
event
)

Receives notification that an attribute has been removed from a session.

public default void
attributeReplaced(HttpSessionBindingEvent
the HttpSessionBindingEvent containing the session and the name and (old) value of the attribute that was replaced
event
)

Receives notification that an attribute has been replaced in a session.

Method Detail

attributeAddedback to summary
public default void attributeAdded(HttpSessionBindingEvent event)

Receives notification that an attribute has been added to a session.

Parameters
event:HttpSessionBindingEvent

the HttpSessionBindingEvent containing the session and the name and value of the attribute that was added

attributeRemovedback to summary
public default void attributeRemoved(HttpSessionBindingEvent event)

Receives notification that an attribute has been removed from a session.

Parameters
event:HttpSessionBindingEvent

the HttpSessionBindingEvent containing the session and the name and value of the attribute that was removed

attributeReplacedback to summary
public default void attributeReplaced(HttpSessionBindingEvent event)

Receives notification that an attribute has been replaced in a session.

Parameters
event:HttpSessionBindingEvent

the HttpSessionBindingEvent containing the session and the name and (old) value of the attribute that was replaced