Head First Servlets and JSP by Bryan Basham, Kathy Sierra, and Bert Bates (O’Reilly)
This book is mainly focused on the SCWCD exam however it provides a great reference for servlet and JSP development. The book is written using the Head First format which is completely different from other books. It uses a lot of pictures, tables, and characters to introduce material, however if you use the book as a reference its not hard to track down the information you are looking for. Overall, I would recommend this book even if you aren’t planning to take the SCWCD exam.