So, for those of you who don't know this, JavaOne actually starts on Saturday. There are some activities before the actual starting day that you don't want to miss.
For example, there is the Geek Bike Ride, which is really fun, it is organized by +Kevin Nilson, a well known java community leader. We started at fisherman's and went across the Golden Gate bridge heading to Sausalito where we enjoyed a good meal after the workout. Then we took the ferry back to San Francisco and enjoyed an amazing view of the bay.
Some pictures of the bike riding:
Also, there was an event called Devoxx4Kids, where about 150 kids spent the whole day learning about programming. They used scratch, arduinos, and legos. Some of the Java community members were volunteers and helped during the sessions.
Some pictures about Devoxx4Kids:
If you are planning to attend JavaOne 2015, make plans to arrive on Friday so you can enjoy these pre-conference events.