You are doing great job and all the best for your friday exam. Don't feel tension be cool
and you'll get very good score.
As you told javablackbelt is very good and you got the score 87%.
its very good it;s showing your hardwork and confedence.
If possible please provide all the URL's for mock exams.
Once completed the exam post as much as questions, so that advancetage for new guys.
Once again wish you all he best.