Date的list排序，时间按先后顺序排序

public static void main(String[] args) {

    try {
        List<Date> listDate = new ArrayList<>();
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        listDate.add(format.parse("2020-09-10 18:00:00"));
        listDate.add(format.parse("2020-09-10 13:00:00"));
        listDate.add(format.parse("2020-09-10 09:00:00"));
        listDate.add(format.parse("2020-09-10 11:00:00"));
        DateListSort(listDate,"asc");
        for (Date s:listDate){
            System.out.println(format.format(s));
        }
    }catch (ParseException e) {
        e.printStackTrace();
    }

}


/**
 * 时间list排序
 * @param list
 */
public static void DateListSort(List<Date> list,String type) {
    Collections.sort(list, new Comparator<Date>() {
        @Override
        public int compare(Date o1, Date o2) {
            if(type.equals("asc")){
                if (o1.getTime() > o2.getTime()) {
                    return 1;
                } else if (o1.getTime() < o2.getTime()) {
                    return -1;
                }
            }else if(type.equals("desc")){
                if (o1.getTime() < o2.getTime()) {
                    return 1;
                } else if (o1.getTime() > o2.getTime()) {
                    return -1;
                }
            }
            return 0;
        }
    });
}