here are certain links for mock exams to prepare for scjp 6.0
1.http://faq.javaranch.com/java/ScjpFaq
2. http://faq.javaranch.com/java/ScjpMockTests
3. http://examlab.tk/
Examlab is tough, but if you get 50% of score, then it is almost sure that you can pass the SCJP
All the very best!!
