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what is HttpSessionListener

 
Ranch Hand
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hi
what is HttpSessionListener?can anybody give me example using httpsessionlistener
 
Greenhorn
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Hi
An object that implements the HttpSessionListener interface is notified when a session is created or destroyed in its web app context
It can be used to track how many users are currently logged in the system by keeping an counter in the object that implements the Listener and then subsequently incrementing / decrementing it in the appropriate methods
 
Don't get me started about those stupid light bulbs.
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