In case you're eager to find out what talks are likely to appear at JavaOne this year Mitchell Pronschinske has posted a list of people who've heard their talks have been accepted by Oracle. The list is compiled from tweets and blog posts. I'm sure he'd appreciate a heads up if you've had a talk accepted that's not on the list.
JavaOne is being held on September 19-23, 2010 in San Francisco. The official session list should appear on the JavaOne website in June.