int[] tmp = {4,9,3,7};
            int ultimo=tmp[tmp.length -1];

            for (int i = tmp.length -1 ; i>0; i--) {
                int h = i-1;
                tmp[i] = tmp[h];

            }
            tmp[0] = ultimo;

            for (int i = 0; i < tmp.length; i++) {
                System.out.println(tmp[i]);
            }