I read SCWCD Exam Study Kit 2nd ed. and Head First
Servlets and
JSP.
Both book are good, but HFSJ is more attractive, funny and easier to read.
However HFSJ has MANY errata (more than 130 points!), everyone who read HFSJ should check
HFSJ errata list.
If HFSJ has not much errata, I think it's a perfect book for SCWCD exam.
I like HFSJ very much, and hope the authors consider to write Head First
Java Web Services book.
SCJA 1.0, SCJP 1.4, SCWCD 1.4, SCBCD 1.3, SCJP 5.0, SCEA 5, SCBCD 5; OCUP - Fundamental, Intermediate and Advanced; IBM Certified Solution Designer - OOAD, vUML 2; SpringSource Certified Spring Professional