小编use*_*681的帖子

我正在尝试使用Comparator如下所示的排序集.

Set seatSet = tc.getTheatreSeat();
    List listArr = new ArrayList(seatSet);
    Collections.sort(listArr, new Comparator() {
        public int compare(Object arg0, Object arg1) {
            TheatreSeat r1 = (TheatreSeat) arg0;
            TheatreSeat r2 = (TheatreSeat) arg1;
            if (r2.getId() < r1.getId()) {
                return 1;
            }
            return 0;
        }
    });

但它不起作用.我的代码有什么问题请帮忙.