Functional Programming in Java [closed]

Answer 1

Scala was mentioned here, but there's a lot lighter and more Java compatible language: Xtend. It compiles to plain Java and uses the same type system. It has great Eclipse support. You can mix .java and .xtend files in a single project.

Sample code:

def static void main(String[] args) {
    val s = #[1,2,3].map[it+43].join(", ")
    println(s);
}