The developer wants to remove the HttpSessionobject and its values from the client' system.

To remove the HttpSession object and its values from the client’s system, the developer should use the invalidate() method. This method is called on the HttpSession object itself and marks the session for deletion, removing all its attributes and invalidating the session on the server side. Once a session is invalidated, any new request from the client does not associate with the old session and will typically result in a new session being created if required.

Here’s a step-by-step explanation of how the invalidate() method works:

The developer retrieves the HttpSession object from the HttpServletRequest object using the getSession() method.

The developer calls the invalidate() method on the retrieved HttpSession object.

The server invalidates the session, which means it is no longer recognized and any subsequent requests will not be associated with it.

All objects bound to the session are removed and available for garbage collection.

The client’s next request will not have a valid session, and the server will treat it as a new session if necessary.

References:The information provided here is aligned with the EC-Council’s Certified Application Security Engineer (CASE) JAVA guidelines and best practices for secure session management. For more detailed information, please refer to the EC-Council’s CASE JAVA official study guides and training materials12.