Hi chowdary
I read HFSJ & took some mock exams.
I got 66% on hfsj mcok exam. I got around 10 wrong answers in that mock because i didn't know howmany correct answers are there.
After taking the hfsj mock, i did some mock exams on j2eecertificate.com, jdiscuss.com, whizlabs demo(free) mock exam.
Like someone already told, u'l get around 50 questions for which u don't need to think twice, they are so easy. Ofcourse, that doesn't mean, u should answer those question without a second thought. (i answered all those easy questions without thinking twice and got three of them wrong which i would've answered if i rechecked them before finishing the
test).
If u don't bother about the score and just want to pass, HFSJ is enough. But if u want to score (close to) 100%, u might have to go thru the specs(which i didn't do).
good luck
Suma