{random advice from the internet} Java. Show your expertise. Because Java is the "new Cobol" there's going to be a need for Java programmers for a long time.,

{random advice from the internet} Java. Show your expertise. Because Java is the "new Cobol" there's going to be a need for Java programmers for a long time., and building something interesting in Java is going to stand out in a pile of resumes more than a TODO app in Haskell. If you want to learn a new language, Clojure would be a good fit for Java experience because it assumes knowledge of the JVM. Clojure would leverage your experience with Java and is a "cool kid" language that has corporate adoption. Good luck.