This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
I may be comming in a little late on the discussion, but I hope this contrubution adds to the discussion.
I have a little set of mock exam questions on this subject that tries to drive home when something won't compile, when an Exception will get thrown, and when a RuntimeException might get thrown. I put the mock exam questions in a new JavaRanch thread so as not to hijack this one: