Java to Scala cheatsheet | realestate.com.au Tech Blog. We’ve started some new work in Scala! Most of the back-end developers in the Residential team have a Java background though, so we put together this cheatsheet to help get the team started. Scala does almost everything Java does, plus a whole lot of useful functional stuff. There’s a direct analog in Scala for almost everything in Java. Keep in mind though, real idiomatic Scala needs a bit more than just Java semantics — there’s lots of really powerful and useful functional features and idioms that you can learn as you go.