public static void main(String[] args) {

        ArrayListlist = new ArrayList<>();
        for(int i = 1; i < 6; i++){ // bu element index degil.
            list.add(i);
        }
        System.out.println(list); // [1, 2, 3, 4, 5]

        for (int i = list.size()-1; i >= 0; i--) {
            int each = list.get(i);  // unboxing
            System.out.print(each + " "); // 5 4 3 2 1
        }