Java as a platform is absolutely not dwindling in velocity. All that is happening is people are looking into alternative JVM languages like Scala, Clojure and Groovy. This trend has been happening for a while and is as much to do with Servlets/Spring as it is with Java the language. It has absolutely nothing to do with Oracle which has been a fantastic steward for the platform.

I don't think you actually have much understanding of enterprise environments otherwise you would know how ridiculous the idea that Go or C# is going to take over from Java anytime soon.