Thats the best book I've read ever for JSP and Servlets mentioned by Anupam. One more book is there if you need some more reference. Its Core Servlet JSP by Sun Microsystems. I don't remember the auther names, sorry!
Work Hard, Expect The Worst...<br /> <br />Bimal R. Patel<br />(SCJP 1.2, SCWCD 1.4)