I got 67% .I followed frits/scjp and practice exams by devaka cooray,nikos blog and plenty other online resources.
I prepared for one month.
I could have done better and atleast try to eliminate answers during the exam.
Things that I would suggest.
Never change answers once given.
Don't think the question is too easy.(for example scope of the variable if written in a for loop..I made this mistake inspite of reminding this a lot of times before exam)
Practice every wierd thought you get.(class extends abstractclass implements interface...how would you override a method common in abstractclass and interface).