Browser Stops how to kill external process

Hi All,
I am using Runtime 's exec method to run some binary on server from my JSP page .
Runtime rt = Runtime.getRuntime();
Process pr = rt.exec(XYZ);
I am running the server (TOMCAT) on bsd machine ,
Problem ,
When the JSP is requested from the browser and user clicks on stop button / closes the browser window .
The external process does not terminated .
it is shown as paused process in TOP .
Is there any way to handle this situation to stop the process .
Regards
Yogesh

you have to write a class which implements HttpSessionActivationListener and in the sessionWillPasivate() method do the processing to KILL the process that is running in the background.
you have to take care in identifying the process from the session object passed to the listener.
Note that this method will be called when session is about to be invalidated either by time out or forcefull invalidation.
The listener class is than supposed to be registered by putting the following in web.xml
<listener>
<listener-class>fully qualified name of your Listener</listener-class>
</listener>

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>
I already tried that one rmishra......
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