Koen Serneels is a Senior JAVA software engineer with several IBM, Cisco, and Oracle certifications. For more than 10 years he has developed enterprise solutions using Java(EE), Spring, Spring MVC, Web Flow, JSF, and Hibernate. He holds a keen interest in system architecture and integration, data modeling, relational databases, security and networks. Beginning his career with the Belgian federal government, Koen developed highly transactional Java-based applications with legacy integration. Currently, he is employed by Hewlett-Packard and is a Java software consultant and technical lead for the Flemish government in Belgium. He also teaches a graduate course on Software Development with Java at the Groep T Engineering School in Leuven, Belgium and is co-author of the book on . You can contact Koen at: koen DOT serneels AT error DOT be ©