I want to redirect to a particular page, but before that, I want to display a different HTML page containing a message.

Troy Niven

The User not validated and the Error Message doesn't get displayed at all . I first want it to be displayed , and then after 10 seconds , I want to redirect the servlet to my OpeningPage

How is that possible ???]

Try something like this instead then.

res.setHeader("refresh","10; URL=http://"

out.println(" User not Validated");