SCJP Mock Tests

http://www.akgupta.com/Java/certification.htm

http://scjptest.com/

http://faq.javaranch.com/java/ScjpMockTests

http://www.javacertificationexams.com/scjp-mock-exams.php

http://www.javadeveloper.co.in/scjp/scjp-mock-exams.html