Welcome to JavaRanch. This forum pertains to the Sun Certified Java Developer exam. You may want to post your question in the Java in General: Beginner or Intermediate forums. You'll have a much better chance of getting an on-point reply to your question.
Give a man a fish, he'll eat for one day. Teach a man to fish, he'll drink all your beer.
Cheers, Jeff (SCJP 1.4 all those years ago...)