Suppose you have 2 (or more) Java web projects (Java 6, maven) that you need to release as 1 web application (currently Servlet 2.5 & Tomcat 6)?
How to develop these 2 project, that then they can be combined easier? What are frameworks and tools that work together well?
Maven war plugin can do overlays. Example. This would be good for inclusion of web resources, but not web.xml
Also there is cargo-maven2-plugin, that additionally can merge web.xml content.