Java implementation of Cartesian product algorithm __java

private static void Descartes (List<list<string>> dimvalue, list<list<string>> result, int Layer, list<string> curlist) {if (Layer < Dimvalue.size ()-1) {if (dimvalue.get). Layer
            E () = = 0) {Descartes (Dimvalue, result, layer + 1, curlist); else {for (int i = 0; i < dimvalue.get (layer). Size (); i++) {list<string>
                    List = new arraylist<string> (curlist);
                    List.add (dimvalue.get (layer). Get (i));
                Descartes (Dimvalue, result, layer + 1, list);
                }} else if (layer = Dimvalue.size ()-1) {if (Dimvalue.get (layer). Size () = 0) {
            Result.add (curlist); else {for (int i = 0; i < dimvalue.get (layer). Size (); i++) {list<string>
                    List = new arraylist<string> (curlist); List.add (DIMVALue.get (layer). Get (i));
                Result.add (list); }
            }
        }
    }

public static void Main (string[] args) {
            list<list<string>> List = new arraylist<list<string>& gt; ();
            list<string> listSub1 = new arraylist<string> ();
            list<string> listSub2 = new arraylist<string> ();
            list<string> listSub3 = new arraylist<string> ();
            Listsub1.add ("1");
            Listsub1.add ("2");

            Listsub2.add ("3");
            Listsub2.add ("4");

            Listsub3.add ("a");
            Listsub3.add ("B");

            List.add (LISTSUB1);
            List.add (LISTSUB2);
            List.add (LISTSUB3);
            list<list<string>> result = new arraylist<list<string>> ();
            Descartes (list, result, 0, New arraylist<string> ());
            System.out.println (json.tojsonstring (result));

    

Run Result:

[["1", "3", "a"],["1", "3", "B"],["1", "4", "A"],["1", "4", "B"],["2", "3", "a"],["2", "3", "B"],["2", "4" "," a "],[" 2 "," 4 "," B "]]