Hi,
Below are links for SCJP mock tests I will request Bar Tenders to please move them to java ranch SCJP mock tests page which are free but for sites person has to register--->
1.http://www.examulator.com/phezam/login.php
2.http://www.javacertificate.com/javacertificate/control/examcenter
3.http://www.javaprepare.com/
4.http://www.javabeat.net/javabeat/scjp5/mocks/EnumMock01.php
This exam is free for some time period so please hurry and avail this opportunity
http://www.onlinemockexams.com/ Will post some more links later...