Timer的用法

目的实现一个间隔轮询执行的功能。

从网上看到java中可以使用Timer，于是本篇文件就对自己的使用记录，进行一次记录。

主函数：

 package cn.test.timer;

 import java.io.FileOutputStream;

 import java.io.IOException;

 import java.io.OutputStreamWriter;

 import java.text.SimpleDateFormat;

 import java.util.Date;

 import java.util.Timer;

 import java.util.TimerTask;

 public class TestTimer {

     public static void main(String[] args) {

         Timer timer = new Timer();

         // schedule task

         timer.schedule(new MyTimerTask(), 0, 2000);

         System.out.println("task over time:" + new Date());

         try {

             Thread.sleep(8000);

         } catch (InterruptedException e) {

             e.printStackTrace();

         }

         System.out.println("task over time:" + new Date());

     }

 }

继承TimerTask的自定义类MyTimerTask：

 package cn.test.timer;

 import java.io.*;

 import java.text.SimpleDateFormat;

 import java.util.Date;

 import java.util.TimerTask;

 import org.apache.log4j.Logger;

 public class MyTimerTask extends TimerTask {

     private final Logger logger = Logger.getLogger(MyTimerTask.class.getName());

     private final SimpleDateFormat fullDateFormat = new SimpleDateFormat("yyyyMMdd HH:mm:ss");

     private final SimpleDateFormat shortDateFormat = new SimpleDateFormat("yyyy-MM-dd");

     @Override

     public void run() {

         // TODO Auto-generated method stub

         System.out.println("task run time:" + new Date());

         logger.info("start.............................");

         String fileDir = "D:/Java_Study/windowsservice/JavaService_2_0_10-amd64/log/";

         String filePath = fileDir + shortDateFormat.format(new Date()) + ".txt";

         File logDirector = new File(fileDir);

         File logFile = new File(filePath);

         try {

             if (!logDirector.exists()) {

                 logDirector.createNewFile();

             }

             if (!logFile.exists()) {

                 logFile.createNewFile();

             }

             FileWriter writer = new FileWriter(filePath, true);

             writer.write(fullDateFormat.format(new Date())+"\r\n");

             writer.close();

         } catch (final IOException e) {

             e.printStackTrace();

             logger.error("error:\r\n" + e.getMessage() + "\r\n" + e.getStackTrace());

         } finally {

         }

         logger.info("end.............................");

     }

 }

运行起来后，Console上输出信息为：

task over time:Fri Apr 22 23:53:15 CST 2016
task run time:Fri Apr 22 23:53:15 CST 2016
0 INFO 2016-04-22 23:53:15 cn.test.timer.MyTimerTask start.............................
1 INFO 2016-04-22 23:53:15 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:17 CST 2016
1998 INFO 2016-04-22 23:53:17 cn.test.timer.MyTimerTask start.............................
2000 INFO 2016-04-22 23:53:17 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:19 CST 2016
3998 INFO 2016-04-22 23:53:19 cn.test.timer.MyTimerTask start.............................
4001 INFO 2016-04-22 23:53:19 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:21 CST 2016
5998 INFO 2016-04-22 23:53:21 cn.test.timer.MyTimerTask start.............................
6001 INFO 2016-04-22 23:53:21 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:23 CST 2016
7998 INFO 2016-04-22 23:53:23 cn.test.timer.MyTimerTask start.............................
task over time:Fri Apr 22 23:53:23 CST 2016
8000 INFO 2016-04-22 23:53:23 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:25 CST 2016
9998 INFO 2016-04-22 23:53:25 cn.test.timer.MyTimerTask start.............................
9999 INFO 2016-04-22 23:53:25 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:27 CST 2016
11999 INFO 2016-04-22 23:53:27 cn.test.timer.MyTimerTask start.............................
12000 INFO 2016-04-22 23:53:27 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:29 CST 2016
13999 INFO 2016-04-22 23:53:29 cn.test.timer.MyTimerTask start.............................
14001 INFO 2016-04-22 23:53:29 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:31 CST 2016
15999 INFO 2016-04-22 23:53:31 cn.test.timer.MyTimerTask start.............................
16000 INFO 2016-04-22 23:53:31 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:33 CST 2016
17999 INFO 2016-04-22 23:53:33 cn.test.timer.MyTimerTask start.............................
18001 INFO 2016-04-22 23:53:33 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:35 CST 2016
19999 INFO 2016-04-22 23:53:35 cn.test.timer.MyTimerTask start.............................
20001 INFO 2016-04-22 23:53:35 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:37 CST 2016
21999 INFO 2016-04-22 23:53:37 cn.test.timer.MyTimerTask start.............................
22001 INFO 2016-04-22 23:53:37 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:39 CST 2016
23999 INFO 2016-04-22 23:53:39 cn.test.timer.MyTimerTask start.............................
24003 INFO 2016-04-22 23:53:39 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:41 CST 2016
25999 INFO 2016-04-22 23:53:41 cn.test.timer.MyTimerTask start.............................
26001 INFO 2016-04-22 23:53:41 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:43 CST 2016
27999 INFO 2016-04-22 23:53:43 cn.test.timer.MyTimerTask start.............................
28002 INFO 2016-04-22 23:53:43 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:45 CST 2016
30000 INFO 2016-04-22 23:53:45 cn.test.timer.MyTimerTask start.............................
30002 INFO 2016-04-22 23:53:45 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:47 CST 2016
32000 INFO 2016-04-22 23:53:47 cn.test.timer.MyTimerTask start.............................
32004 INFO 2016-04-22 23:53:47 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:49 CST 2016
34000 INFO 2016-04-22 23:53:49 cn.test.timer.MyTimerTask start.............................
34002 INFO 2016-04-22 23:53:49 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:51 CST 2016
36000 INFO 2016-04-22 23:53:51 cn.test.timer.MyTimerTask start.............................
36002 INFO 2016-04-22 23:53:51 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:53 CST 2016
38000 INFO 2016-04-22 23:53:53 cn.test.timer.MyTimerTask start.............................
38001 INFO 2016-04-22 23:53:53 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:55 CST 2016
40000 INFO 2016-04-22 23:53:55 cn.test.timer.MyTimerTask start.............................
40002 INFO 2016-04-22 23:53:55 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:57 CST 2016
42000 INFO 2016-04-22 23:53:57 cn.test.timer.MyTimerTask start.............................
42002 INFO 2016-04-22 23:53:57 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:53:59 CST 2016
44000 INFO 2016-04-22 23:53:59 cn.test.timer.MyTimerTask start.............................
44004 INFO 2016-04-22 23:53:59 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:54:01 CST 2016
46000 INFO 2016-04-22 23:54:01 cn.test.timer.MyTimerTask start.............................
46001 INFO 2016-04-22 23:54:01 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:54:03 CST 2016
48001 INFO 2016-04-22 23:54:03 cn.test.timer.MyTimerTask start.............................
48003 INFO 2016-04-22 23:54:03 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:54:05 CST 2016
50001 INFO 2016-04-22 23:54:05 cn.test.timer.MyTimerTask start.............................
50002 INFO 2016-04-22 23:54:05 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:54:07 CST 2016
52001 INFO 2016-04-22 23:54:07 cn.test.timer.MyTimerTask start.............................
52003 INFO 2016-04-22 23:54:07 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:54:09 CST 2016
54001 INFO 2016-04-22 23:54:09 cn.test.timer.MyTimerTask start.............................
54003 INFO 2016-04-22 23:54:09 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:54:11 CST 2016
56001 INFO 2016-04-22 23:54:11 cn.test.timer.MyTimerTask start.............................
56002 INFO 2016-04-22 23:54:11 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:54:13 CST 2016
58001 INFO 2016-04-22 23:54:13 cn.test.timer.MyTimerTask start.............................
58003 INFO 2016-04-22 23:54:13 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:54:15 CST 2016
60001 INFO 2016-04-22 23:54:15 cn.test.timer.MyTimerTask start.............................
60003 INFO 2016-04-22 23:54:15 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:54:17 CST 2016
62001 INFO 2016-04-22 23:54:17 cn.test.timer.MyTimerTask start.............................
62003 INFO 2016-04-22 23:54:17 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:54:19 CST 2016
64002 INFO 2016-04-22 23:54:19 cn.test.timer.MyTimerTask start.............................
64004 INFO 2016-04-22 23:54:19 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:54:21 CST 2016
66002 INFO 2016-04-22 23:54:21 cn.test.timer.MyTimerTask start.............................
66004 INFO 2016-04-22 23:54:21 cn.test.timer.MyTimerTask end.............................
task run time:Fri Apr 22 23:54:23 CST 2016
68002 INFO 2016-04-22 23:54:23 cn.test.timer.MyTimerTask start.............................
68003 INFO 2016-04-22 23:54:23 cn.test.timer.MyTimerTask end.............................

Timer的用法的更多相关文章

.NET中的Timer类型用法详解
这篇文章主要介绍了.NET中的Timer类型用法,较为详细的分析了Timer类型在各种环境下的用法,需要的朋友可以参考下在.NET FrameWork中有多个Timer,那么怎么根据实际情况进行 ...
Java中Timer的用法
现在项目中用到需要定时去检查文件是否更新的功能.timer正好用于此处. 用法很简单,new一个timer,然后写一个timertask的子类即可. 代码如下: package comz.autoup ...
Java中Timer的用法--转载之网络
用法很简单,new一个timer,然后写一个timertask的子类即可. import java.util.Timer; import java.util.TimerTask; public cla ...
timer.Interval用法简介
这个东东呢是我在做windows服务的时候碰到的,总结了一下她的用法,如下: 一.指定时间间隔写一个每隔一分钟就执行一次的吧 public partial class PSJCService : S ...
handler和Timer的用法
final Handler handler = new Handler(){public void handleMessage(Message msg){if (msg.what == 0x123){ ...
C# Timer定时器用法
System.Timers.Timer timer1 = new System.Timers.Timer(); timer1.Elapsed += new System.Timers.ElapsedE ...
android Timer TimerTask用法笔记
Android中经常会遇到执行一些周期性定时执行的任务.初学的时候经常会使用Thread.sleep()方法.在android中,有Timer可以专门干这个事情. 先看看Timer.class中都是些 ...
【WIP】swift3的timer的用法
创建: 2017/10/14 更新: 2017/10/14 标题加上[WIP],补充创建时间回家再写
Timer和TimerTask的用法
最近在做java课程设计的时候,我用到了timer,于是学习了一下timer的用法. java实现多线程比较常用的两种方法,一种是直接继承Thread类,另一种则是实现Runnable接口.Timer ...

随机推荐

Google测试分享-测试经理
首先大家可以思考下,google的测试经理角色必须具备什么样的能力.据不完全统计,google的测试经理,超过一半之前都做过TE的角色(大家可以想想为啥):对于与被测产品相关的任何使用问题,测试经理都 ...
【BZOJ1654】[Usaco2006 Jan]The Cow Prom 奶牛舞会赤果果的tarjan
Description The N (2 <= N <= 10,000) cows are so excited: it's prom night! They are dressed in ...
python算法——第四天
一.递归 def func(num): if num / 2 > 0: num -= 1 print(num) num = func(num) print('quit') return num ...
nginx和tomcat实现反向代理、负载均衡和session共享
这类的文章很多,nginx和tomcat实现反向代理.负载均衡实现很容易,可以参照http://blog.csdn.net/liuzhigang1237/article/details/8880752 ...
android-数据存储之远程服务器存储
一.如何编码实现客户端与服务器端的交互 <一>JDK内置原生API HttpUrlConnection <二>Android内置的包装API HttpClient浏览器 < ...
Android查询系统的音频（音乐播放器的核心）
//查询系统的音频库 public static List<MusicBean> getMusicInfo(Context context){ List<MusicBean> ...
curl测试网页响应时间
连接时间: curl -s -o /dev/null -w "%{time_connect}\n" http://www.joinpay.com 传输时间: curl -s -o ...
Runtime Error---Description: An application error occurred on the server....
[原]Runtime Error---Description: An application error occurred on the server.... 2010-1-7阅读2010 评论3 D ...
js 随机数洗牌算法
function shuffle(arr){ var len = arr.length; for(var i = 0;i<len -1;i++) { var idx = Math.floor(M ...
房间安排-nyoj168
描述 2010年上海世界博览会(Expo2010),是第41届世界博览会.于2010年5月1日至10月31日期间,在中国上海市举行.本次世博会也是由中国举办的首届世界博览会.上海世博会以“城市,让生活 ...

Timer的用法

Timer的用法的更多相关文章

随机推荐

热门专题