Java之~ List （ArrayList）按时间倒序排序

//按时间倒序排序
Collections.sort(resultList, new Comparator<UserRepairVo>(){
final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
@Override
public int compare(UserRepairVo o1, UserRepairVo o2) {
return (o2.getCreatetime().toString()).compareTo(o1.getCreatetime().toString());
}
  });

// System.out.println(new Gson().toJson(resultList));