I think if u r going for the current exam, SCWCD Exam Study Kit of Hanumant would be enough for studying for the exam... And do as many mocks as you can... After then, I hope you will be ready for the exam...
But for the upcoming new SCWCD exam, which is based on the
J2EE 1.4, studying that book would not be enough for it, because there are many new things added in
JSP 2.0 specification... Thus I would recommend you to read some parts of
servlet 2.4 and JSP 2.0 specs... And partcipate in forums to share knowledge.... That's all needed for you to pass the new SCWCD exam...
Co-author of SCMAD Exam Guide, Author of JMADPlus
SCJP1.2, CCNA, SCWCD1.4, SCBCD1.3, SCMAD1.0, SCJA1.0, SCJP6.0