timer...
1000ms
36
1000ms
37
1000ms
38
timer...
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2)每隔2秒每隔4秒间隔运行
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package com.amos.concurrent;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;
/**
* @ClassName: TraditionalTimerTest
* @Description: 传统的线程计时器
* @author: amosli
* @email:hi_amos@outlook.com
* @date Apr 17, 2014 12:54:32 AM
*/
public class TraditionalTimerTest {
private static int count = 0 ;
@SuppressWarnings("deprecation")
public static void main(String[] args) {
//间隔2秒和4秒分开运行
class myTimerTask extends TimerTask{
@Override
public void run() {
count = (count+1)%2;
if(count==1){
System.out.println("mybombing_2000....");
new Timer().schedule(new myTimerTask(), 2000);
}else {
System.out.println("mybombing_4000....");
new Timer().schedule(new myTimerTask(), 4000);
}
}
}
new Timer().schedule(new TimerTask() {
public void run() {
new Timer().schedule(new myTimerTask(), 2000);
}
}, 2000);
//输出时间
while (true) {
System.out.println(new Date().getSeconds());
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
}
}
}
}
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运行效果:
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22
23
24
25
mybombing_2000....
26
27
mybombing_4000....
28
29
30
31
mybombing_2000....
32
33
mybombing_4000....
34
35
36
37
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计时器的实现主要采用的是Timer类的.schedule()方法,默认的.schedule()方法中传入的是void java.util.Timer.schedule(TimerTask task, long delay),一个task,一个是延时操作;比较常用的是void java.util.Timer.sched(TimerTask task, long time, long period),period表示的是每隔一定时间进行循环执行task;当然这里还有定时操作void java.util.Timer.schedule(TimerTask task, Date time),这里要按实际需求去选择了.