The code is up at https://github.com/logaan/typed-game-of-life and I'd be very happy to accept a pull request with a Java example. I've done a few side by side comparisons of Clojure / Scala / Java and the Java has always been several times larger than Cloure / Scala. In a couple of cases it was 20-30x larger.

Java 8 may indeed improve this situation. Does it also introduce higher order functions for working with collections?