"JavaScript everywhere, and everything ported to JavaScript" -- it's either a running joke in IT these days or a stone-cold truth. Evidence is tending toward the latter, what with Node.js becoming a jack-of-all-trades framework for many workloads and environments.
With Nodyn, Node.js gains yet another place it can run: the Java Virtual Machine.
Nodyn, a project sponsored by Red Hat via its Project:Odd team, works by leveraging two other projects: the DynJS project, which provides the actual JavaScript runtime (ECMAScript, actually) for the JVM, and the Vert.x application platform/event bus system.