Howdy!
I'm going to give you tips from a 'brain' perspective, based on some of the latest studies of 'memory' (human, not computer) and neurobiologiy and cognitive science.
* Make
Java the LAST thing you study before you go to bed. In other words, if you study or review some Java material in the evening, do NOT try to learn anything else in between Java and going to sleep. It can make a big difference.
* During these five days, try to study / review Java in different rooms and environments. Do not just stay in the same room all the time, because part of your memory will be linked to that environment, and this makes it harder when you're in the exam room, because the environment is so different. Changing rooms and environments while you study makes your memory less dependent on the environment.
* In contrast to that -- and you might think this one is REALLY dumb, but it's been proven to help -- wear the same *shirt* or something familiar for the next five days, while you're studying / reviewing. (Ok, you're on your own for when you do the laundry -- I didn't say you had to spend ALL your time in that one shirt -- just the time that you are studying / reviewing.
The reason for this is the same reason why you don't want to stay in the same room: your memory becomes somewhat linked to the other things in your environment. So if you wear the same shirt and THEN -- this is the key -- wear the SAME shirt while you take the real exam, you will improve your chances of remembering things. (This is obviously not a tip about understanding; it is a tip about memory/recall.
* Drink lots and lots and lots of
water for the next five days, and especially on exam day. It is a fact -- your brain works better the more hydrated it is, and most people walk around dehydrated. You're dehydrated *before* you notice that you are thirsty. If you're doing it right, you won't ever BE thirsty.
* Of course get plenty of sleep*
* Back to my first tip, about not trying to learn / review / study anything else in between java and going to sleep, it's even better if you don't try to learn anything new for the next five days, unless it is a physical skill. Working on your latest hip-hop dance routine won't hurt your Java studying
* Focus on your weak areas, but relax. Five days is enough time to try to gain more understanding. Much of this exam cannot be won by rote-memorization. If you find yourself having trouble remembering something, it could be that you need to work on understanding it more deeply, so that when you see questions on the real exam that are different from the mock exam questions on the same topic, you will still be able to answer it.
* For goodness sakes, do NOT worry about getting a "good" score. Unless you've been told by your employer to "score a 90 or you're out", then ANY passing score makes your a Sun Certified Java Programmer. I've ranted on that point enough in these forums
* Of course, do ask questions -- as many as you need to -- on javaranch.
We'll all be cheering for you; all of us HAVE been -- or WILL be -- in the same spot.
Good luck!
Kathy
Thanks.
I don't have any victory dance or happy dance. I guess I am not as passionate as you are 
