I remember that kind of pressure - it's how I passed my
SCJP 1.2 exam. (I had a week, though I started with mild familiarity with the language.)
My suggestion, for starters, is to read the book carefully and work through the exercises. You're going to need to take some time also to get some experience with the code, as I've found it always helps to have more than just 'book knowledge' if you're going for the Sun certifications. (Besides, a book-earned certification isn't going to do you much good in the real world, since you won't have the experience to back it up.)
It is possible in a month to get to that point. Just concentrate and do your best.
