Sun's promise to open source Java at JavaOne left a lot of questions, and some of their plans are starting to come together. We've highlighted the most recent batch of announcements in the Java Today section, starting with the unveiling of a new Open Sourcing the JDK java.net page for updates and discussion. A news.com article summarizes a Sun press event about the ongoing effort, including the announcements that some components, including javac and HotSpot, will be open-sourced this year. Mark Reinhold's blog Yes, we really are going to open-source the JDK adds other interesting points, such as the Java ME CDC and CLDC platforms going open-source as well. Finally, Danny Coward's Open Source: Cutting the Java SE apron strings provides a historical context, and wonders aloud which pieces of the JDK will be open sourced first.

A recent DeveloperWorks article gives Seven simple reasons to use AppFuse: "AppFuse removes the pain of integrating open source projects. It also makes testing a first-class citizen, allows you to generate your entire UI from database tables, and supports Web services with XFire. Furthermore, AppFuse's community is healthy and happy -- and one of the few places where users of different Web frameworks actually get along."

Enterprise JavaBeans 3.0 is a substantial change from the earlier specifications in terms of both the change in enterprise bean implementation models and in the bean location and call paradigm. How can you migrate legacy EJB code to utilize improvements in the new specification? The article Migrating EJB 2.x applications to EJB 3.0 discusses the strategies, both from a design and implementation perspective, for migrating existing EJB applications to the new specification.