This isn't a language difference, it's a coding style difference. There's nothing to stop you writing it in java as
public int[] seriesUp(int n) {
return range(1, n).concatMap( x -> range(1, x));
}
(assuming a suitable range function and concatMap method, which is a library question rather than a language issue)
Java won't allow the special [1..n] syntax, and method application is a lot more explicit, with a more rigid argument order than Haskell. But to my mind both these differences are places where Java is the more consistent, readable, and yes, beautiful language.
Java won't allow the special [1..n] syntax, and method application is a lot more explicit, with a more rigid argument order than Haskell. But to my mind both these differences are places where Java is the more consistent, readable, and yes, beautiful language.