集合排序

 public static void main(String args[]) {
    MeetingAction m = new MeetingAction();
    ArrayList<MeetingDetailVO> list = new ArrayList<MeetingDetailVO>();
  
    Long l = System.currentTimeMillis();
       Long l2 = System.currentTimeMillis()+24*60*1000;
       Long l4 = System.currentTimeMillis()+48*60*1000;;
         
    MeetingDetailVO v = new MeetingDetailVO();
    v.setMeetingStartTime(new Timestamp(l));
    MeetingDetailVO v4 = new MeetingDetailVO();
    v4.setMeetingStartTime(new Timestamp(l2));
    MeetingDetailVO v5 = new MeetingDetailVO();
    v5.setMeetingStartTime(new Timestamp(l4));
   
    list.add(v);
    list.add(v5);
    list.add(v4);
    System.out.println("排序之前");
    for(MeetingDetailVO vv : list){
     System.out.println(vv.getMeetingStartTime());
    }
    System.out.println("排序之后");
    m.MeetingSort(list);
   }

 

 

package com.zzst.application.meeting.action.meeting;

import java.util.Comparator;

import com.zzst.model.meeting.meetingDetail.MeetingDetailVO;

public class MeetingComparator implements Comparator<MeetingDetailVO> {
    /**
     * 排序接口算法实现
     *
     * @MeetingDetailVO o1
     * @MeetingDetailVO o2
     * @return 比较结果的大小
     */
    public int compare(MeetingDetailVO o1, MeetingDetailVO o2) {
     int a=o1.getMeetingStartTime().compareTo(o2.getMeetingStartTime());
       
     return  a;
     }
}