Hi Maha Anna,
I have taken almost all mock tests in
www.Javarach.com/mock.html and got more than 80% in all the tests.
If you get more than 80% in Java Exam cram book test, you can walk into the test room and come out with flying colors.
I studied Complete Java2 certification Guide by Simon Roberts and
Java Exam Cram by Bill Brogden.
I found Carl's notes and Java2 and Marcu's Green last minute tutorial to be very usefull for final preparaion.
The links are below.
http://java.about.com/compute/java/gi/dynamic/offsite.htm?site=http://www.software.u%2Dnet.com/J2Tutor/IntroJ2.htm http://www.geocities.com/cdesboro/info/ and the credit goes to Javaranch and the team for it's great help.
Good luck and thanks every one.
Supree