This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
There's no code that calls "validateUser()", and there's no code that displays another page; there's just code that shows a GUI, but that GUI doesn't do anything. Were you assuming that something, somehow, automatically, would call "validateUser()"?