Recently I have used Google Guava EventBus in one of my projects. It worked pretty well but testing it was kind of a challenge.

If you are not familiar with the EventBus you can learn more about it here.

Shortly speaking Javarsovia 2010 was great! I enjoyed it very much.

I want to thank very much to all people involved in the organization of this event. Great job! Everything worked fine and I was really impressed by the number of people that came to Javarsovia 2010.