Session problem

[Suma K Gowda]

Hi
I'm having a frames page, once logout link on the topframe is clicked, I'm sending a request to the controllerServlet to invalide the session (session.invalidate()). This is working fine, but if I click browser back button and refresh the page, I'm getting all the data irrespective of non valid session, though I'm checking for valid session before displaying the data in the respective frames.
Please help
Push

[lali virdi]

hi try this
HttpSession session = req.getSession();
if(session.isNew()){
dosomething-----------
}
else{
session.invalidate();
}