Determin how many user log on the site using JSP/Servlet?

Hi all,
Is there a way to determine how many user log on the site using JSP/Sevlet? I'm running Apache 2.x & Tomcat 4.x
I'm trying to get a list of user currently log in the site.
Please help!
Thanks,
-JN-

You could use the HttpSessionBindingListener interface. Every time a user logs into the session put a user object into the session. The user object will implement the HttpSessionBindingListener interface. When the user object is added to a sessiion it recieves an event and it increments a counter. When the session times out or you invalidate the session because the user has logged out the user object will recieve an event and it can then decrement the counter.
This will at least tell how many active user sessions there are.

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That url is missing a few bits. The ... in the middle doesn't help.
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Determin how many user log on the site using JSP/Servlet?

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