java中对集合中对象的某一属性来进行升序降序

Collections.sort(lists, new Comparator() {
    @Override
    public int compare(FmsAssessScheme2Vo o1, FmsAssessScheme2Vo o2) {
        //升序
        return o1.getId().compareTo(o2.getId());
    }
});

Collections.sort(lists, new Comparator() {
    @Override
    public int compare(FmsAssessScheme2Vo o1, FmsAssessScheme2Vo o2) {
        //降序
        return o2.getId().compareTo(o1.getId());
    }
});