[caw]

As an enterprise sysadmin, I concur that Java is focused for long term code maintenance. Reliability of the JVM is for another discussion :)

We do have Rails and other "fun" language applications, but there are few people who know how to write or debug them. Mostly it'd be the small internal teams that use it. Larger teams would still be using Java. Phone application development is a similarly rare skill, hence the outsourcing.

Besides Java, we use copious amounts of .NET. That could be another area you want to focus on in addition to Java if you want to stay in the enterprise space.