stop multipe login with same user name

[gevarghese varghese]

hai,
I am doing a struts application I am bit new to this framework.
I have a requirement which is like this----

whenever a user is logging and without logging out he opens a new browser
with same user name and password OR in a different system he agian tries to login then the previously logged session should be deactivte.

For example just like yahoo mail.
whan a user logs in twice with same id and password more than once except the last logged session all previous sessions are deavtivated.

HOW TO DO THAT IN STRUTS PLEASE HELP ME ON THIS CASE

[Oscar Gonzalez]

Save the username in the context (application)object of the application and make your page search for that user everytime you create a Session with a Listener.

If you use Struts make your Action extend of a BaseAction and check for the username in that one.
[ April 20, 2007: Message edited by: Oscar Gonzalez ]

[Jeanne Boyarsky]

Samuel,
Other places to put the check include in a servlet filter or by extending the Struts RequestProcessor.

[gevarghese varghese]

Oscar Gonzalez ,
thank's