Limiting No of Users

Hi,
In my web application project , i want to limit no of users accessing my application. there is a configuration page for inputting this value.
i can keep an application Context variable and keep increase its value while user login. and decrease the value while user logout.
But how can i control the Count , if user is not properly shutting down the application.
Hope a positive reply soon..
P(?)(?)JAVA

Hi Pooja,
Well in this case i can suggest you a workaround solution.
All you have to do is.
Create a sample SessionListener class using HttpSessionListener & ServletContextListener and then
Create a counter attribute in ServletContext at the time of Context Initialization or a static counter variable inside SessionListener Class Created By you.
Increment the counter variable whenever a new session is created using void sessionCreated(HttpSessionEvent event){} method inside the listener.
In the same ways whenever the session is being destroyed decrement the counter using void sessionDestroyed(HttpSessionEvent event) {}.
and the rest of the custimization is upon you of how many users to restrict and on what parameters & background.
you can use the links specified below of to programme your application
http://src.opensolaris.org/source/xref/sfw/usr/src/cmd/tomcat/apache-tomcat-5.5.17-src/servletapi/jsr152/examples/WEB-INF/classes/listeners/SessionListener.java
http://src.opensolaris.org/source/xref/sfw/usr/src/cmd/tomcat/apache-tomcat-5.5.17-src/servletapi/jsr152/examples/WEB-INF/web.xml
REGARDS,
RAHUL

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