Spring Roo is an easy-to-use productivity tool for rapidly developing Java enterprise applications using well-recognized frameworks such as Spring, Hibernate, AspectJ, Spring Web Flow, Spring Security, GWT, and so on. Spring Roo takes care of creating maven-enabled projects, enterprise application architecture based on your choice of technologies, unit/integration tests based on your choice of testing framework, and so on. The bottom line is that if you’re using Spring, then you must consider using Spring Roo for increased productivity.

Portlets in Action is a comprehensive guide to building portlet-driven applications in Java. It teaches portlet development hands-on as you develop a portal that incorporates most key features of the Portlet 2.0 API. And because portals and portlets are so flexible, the accompanying source code can be easily adapted and reused. Along the way, you’ll learn how to work with key web frameworks like Spring 3.0 Portlet MVC and DWR.

On March 20, 1995, the Tokyo Metro was infected with dangerous sarin gas, which was planted by 5 members of a terrorist group called Aum Shinrikyo. 13 people were killed.