Last weekend while pondering the question "Is Scala ready for the enterprise?" I decided to write a simple Java EE 6 app entirely in Scala, without using any Java. I had three main reasons for doing this: one was just to see how easy/difficult it would be to write everything in Scala (it was easy). Another was to document the process for others journeying down the same road (the entire project is on github). Finally, I wanted to identify advantages of using Scala instead of Java that are specific to Java EE apps (I found several).
Background
The specific app I created was an adaptation of the Books example from Chapter 10 of Beginning Java™ EE 6 Platform with GlassFish™ 3. It's a simple web app that displays a list of books in a database and lets you add new books. Although it's a pretty trivial app, it does touch on several important Java EE 6 technologies: JPA 2.0, EJB 3.1 and JSF 2.0.
"I encourage (actually I dare you) to those who have never even touched a portal to take the JBoss Portlet Bridge for a test drive. It takes 1 download (GateIn bundled with JBoss) and one maven archetype to get started. You can choose from any combination of plain JSF, Richfaces, and Seam with
mvn archetype:generate -DarchetypeCatalog=http://bit.ly/jbossportletbridge from the command line."
TouchKit allows developers to make applications that look and behave like iPhone applications using only Vaadin.
This add-on is available under two licenses: AGPL and CVAL. If your project is compatible with AGPL, you can use the add-on for free; otherwise you must acquire a sufficient number of CVAL licenses before the 30-day trial period ends. For more info, click the license links in the summary above.
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