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what is session expunging?was asked this question in an interview?

 
senthil sen
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how would we avoid session from being expunged?
i was asked this question in an interview?
 
Dominic Paquette
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I know 2 ways:
in code
session.setMaxInactiveInterval(-1);
or in the web.xml
<sesssion-config>
<session-timeout>-1</session-timeout>
</session-config>

Dominic
 
senthil sen
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thanks for ur reply,but i wanna to know the theory and logic of the concept session expunged??that word is new to me.,,
 
Dominic Paquette
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I think expunging a session means invalidating a session. Either it timesout or you can explicitlly invalidate it using HttpSession.invalidate();
Hope this helps
Dominic
 
Don't get me started about those stupid light bulbs.
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