From my knowledge, J2ee started last year,sun put lots of technologies together and call them J2ee. There were not many web servers support J2ee last year. Last year, sun do a lot of changes in J2ee technoloy. I beleve that servlet and jsp are part of the J2ee technology. From servlet2.1 to servlet2.2 ,sun made many changes. Lots book about servlets and jsp also is updated to the new version.I dd not seriously read J2ee book yet,
but I do know there is not much more new technologies in j2ee last year. I will study J2ee if I decide to take architect test. Correct me I am wrong.