[foobazgt]

This is so backwards, it's hard not to take it as a troll.

There is zero risk to using Java. People standardly use OpenJDK builds, which are freely and widely available under open source licensing (GLPv2 + classpath exception). In regards to maintenance, Java continues to be one of the most highly invested languages in existence.

[cookiengineer]

The question to you in response is:

Are you talking about Java(tm) or Java, the language? Because that is a big operational risk difference.

Edited my original comment.

[jcgrillo]

In addition to the licensing risks there's significant technical risk, IME. Chief among them is making sure your colleagues are sufficiently literate to have read Bloch's and Goetz's (et al.) books, and sufficiently tasteful to synthesize those lessons into code which isn't horrible. This is exceedingly rare in practice. So there's the same risk, approximately, as with every other programming language and that's reckless Dunning-Kruger ass programmers.