Well, 2 things:
1. The exam itself was surprisingly not so difficult as expected. Threads questions (the issue that I have little experience in) were not simple, but also not too complex.
It took me hour and a half to finish, including reviewing marked questions and after short struggle with myself I decided to finish and not to go through the exam one more time. I still think it was wise
since chances to spot wrong answer are less than possibility to change correct answer to wrong
2. In Section Analysis which you get together with the score you can see your score per objectives. I got 100% in some difficult areas (like Threads) and 80% in Language fundamentals. The result shows that you have to pay attention also to the areas that you are familiar with.
I used mockup tests only from the Book and from
www.javacertificate.com since was running out of learning time (have to work, support family life and so on )
On
www.javacertificate.com the have about 100 free questions which was not enough, so I took package with more 400 questions. The questions level is good, andwers and explanation are also in very good level.
If you have time I suggest to find some extra resources, but for quick and intensive preparation it is good.