Here's what it took for me
My current expereince- Not actively working on
JAVA but have done before
know
JSP, JAVA, theorical knowledge on
Servlets Study material- Head First
A few mock exams
Time - 3 weeks on intense prep
At exam Difficulty with- I did not do well with seesion management
Design
patterns may be EL[not sure]
REcommendation- Design patterns need to know the art of recognising, I always felt 2 design patterns were appropriate, so was 50% probabability that the answere was right.
Know your web.xml very very well, even the obscure ones.
Custom tags eesy questions but you need to be very clear
JSP - not asking much.
EL - need to be good