The author is a senior Java developer with more than 12 years of experience in Java SE, Java EE, and the related frameworks. He has written and published more than 20 articles about Java technologies and more than 100 tips and tricks. He has also written two books about XML and Java (one for beginners and one for advanced developers). During this time, he has developed web applications using the latest technologies on the market. In the past two years, he has focused on developing RIA projects for GIS fields. He is interested to bring on web as much desktop as possible, therefore GIS applications represents a real challenge for him.