java三种方式创建定时任务

第一种

/**
 * 用Thread类里的Sleep()创建定时任务
 * @author Administrator
 *
 */
public class TimingTask extends Thread {
private long time = 1000;


public void run() {
while (true) {
try {
Thread.sleep(time);
System.out.println("任务执行中");
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}


public static void main(String[] args) {
Thread t = new Thread(new TimingTask());
t.start();
}
}

第二种

/**
 * 用TimerTask创建定时任务
 * @author Administrator
 *
 */
public class TimingTask2 {
static TimerTask task = new TimerTask() {
    
public void run() {
System.out.println("任务执行中!!!");
    }
};
public static void main(String[] args) {
Timer timer = new Timer();
long delay = 0;
long intevalPeriod = 1 * 1000;
timer.scheduleAtFixedRate(task, delay, intevalPeriod);
}
   
}

第三种

/**
 * 使用ScheduledExecutorService创建定时任务
 * @author Administrator
 *
 */
public class TimingTask3 {


public static void main(String[] args) {

Runnable runnable = new Runnable() {
     public void run(){
       System.out.println("任务执行中 !!");
     }
   };
   ScheduledExecutorService service = Executors
                   .newSingleThreadScheduledExecutor();
   service.scheduleAtFixedRate(runnable, 0, 1, TimeUnit.SECONDS);
}


}