HttpSessionListener (Java Servlet 4.0)

All Superinterfaces:

EventListener
```
public interface HttpSessionListener
extends 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 WebListener, or registered via one of the addListener methods defined on ServletContext.
Implementations of this interface are invoked at their sessionCreated(javax.servlet.http.HttpSessionEvent) method in the order in which they have been declared, and at their sessionDestroyed(javax.servlet.http.HttpSessionEvent) method in reverse order.

Since:

Servlet 2.3

See Also:

HttpSessionEvent

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`sessionCreated(HttpSessionEvent se)`	Receives notification that a session has been created.
`default void`	`sessionDestroyed(HttpSessionEvent se)`	Receives notification that a session is about to be invalidated.

- Method Detail
  - sessionCreated
```
default void sessionCreated(HttpSessionEvent se)
```
    Receives notification that a session has been created.
    
    Implementation Requirements:
    
    The default implementation takes no action.
    
    Parameters:
    
    se - the HttpSessionEvent containing the session
  - sessionDestroyed
```
default void sessionDestroyed(HttpSessionEvent se)
```
    Receives notification that a session is about to be invalidated.
    
    Implementation Requirements:
    
    The default implementation takes no action.
    
    Parameters:
    
    se - the HttpSessionEvent containing the session