My new (non-Seam) project is very large (to give you an idea we have approx. 900 JSPs!) My previous Seam project consisted of no more than 10 JSFs. This project is a commercial software that is used for emergency notification services via phone, fax, email, etc.
Here are the frameworks that are currently utilized in this project:
1) OC4J 10.1.2 app server (J2EE 1.3 certified)
2) Struts 1.1
3) Struts 2.0
4) iBATIS
5) Spring
6) Oracle JBO (ADF?)
7) JSP
We have three JDKs installed on our workstations (1.4, 5 and 6). The app runs on Java 1.4 but Eclipse 3.5 requires 5 and they throw in JDK 6 for some other newer apps.
We may be possibly introducing JSF and Hibernate into the mix next year.
I used to think that the JBoss dev stack was initimidating. Not anymore...
It's sad that everytime you change jobs/projects to a different company as a Java developer, you must essentially re-learn a new dev stack/APIs.
Also, it's much easier to use ORM tools like Hibernate when you're starting from scratch using top-down or bottom-up approach b/c you can tweak the hell out of your Java entity classes and/or db schema. When dealing with a legacy schema, it's more difficult so that's why we're leaning towards continued use of iBATIS rather than Hibernate.
