This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
have u set the "authenticate"'s attribute before the page? if you haven't...then it is because the command : if getAttribute("authenticate")== null will always return null value, so it wil continuously direct you to the same page over and over again ( due to the response.sendredirect command