I think java's problem here is how annoying it is to split these up. For example your example completely split up in java vs haskell: Java IntPredicate even

I think java's problem here is how annoying it is to split these up. For example your example completely split up in java vs haskell: Java IntPredicate even = i -> i % 2 == 0; IntUnaryOperator add2 = i -> i + 2; UnaryOperator<IntStream> process = s -> s.filter(even).map(add2); for (int i in process.apply(numbers)) { System.out.println(String.valueOf(i)); } Haskell: printProcessed = mapM_ print . process where process = map (+2) . filter even