My professional title is "application administrator." If you have java code running on a java app server, I support it. Problem is, over my 2.5 year experience in this position, there are a lot of "OutOfMemory" issues that occur. There are also a lot of issues related to lazily configured hibernate causing database performance issues. And of course, the fixall comes from Windows ... "just restart it." Only very few Java developers could actually support the infrastructure they code for, that includes database, messaging and ESB backends.
If I had a shotgun to point at some developers, there would be an extreme shortage of developers.