java - 如何反转数组？

Question

XXXXXVO[] general = XXXX.getXXXX();

 Comparator comparator = new Comparator() {
        DateFormat f = new SimpleDateFormat("dd/MM/yyyy");
        public int compare(Object obj1, Object obj2) {

            XXXXX gen11 = (XXXXXVO) obj1;
            XXXXX gen22 = (XXXXXVO) obj2;

            String firstString = gen11.getXXXXX().toString();
            String secondString = gen22.getXXXX().toString();

            if (secondString == null || firstString == null) {
                return 0;
            }


            return f.parse(firstString).compareTo(f.parse(secondString));

        }
    };      

    Arrays.sort(general, comparator);

上面是按升序对数组进行排序的代码。我希望按降序排列。我怎样才能在 JDK 1.4 中逆转这个问题？

Answer 1

只需颠倒比较的顺序即可:

return f.parse(secondString).compareTo(f.parse(firstString))