Java定时任务

Java定时任务de实现一般有三种方法：thread实现、TimerTask实现、ScheduledExecutorService实现三种。 ​

1 thread实现（不建议）

// thread 实现
public static void threadTask(){
// run in a second
final long timeInterval = 1000;
Runnable runnable = new Runnable() {
public void run() {
while (true) {
// run task
System.out.println("Run Task ...... ");
try {
Thread.sleep(timeInterval);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
};
Thread thread = new

2 TimerTask实现
可以控制任务启动和取消，可以设置第一次任务运行的delay时间。

public static void timerTask(){
TimerTask task = new TimerTask(){
public void run() {
// run task
System.out.println("Run Task ...... ");
}

};
Timer timer = new Timer();
long delay = 0;
long intevalPeriod = 1 * 1000;
//timer.scheduleAtFixedRate(task, delay,intevalPeriod);
timer.scheduleAtFixedRate(task, new

3 ScheduledExecutorService实现
通过线程池的方式来执行任务，可以设定第一次运行任务delay时间，较好的时间间隔约定。

public static void scheduledExecutorServiceTask(){
Runnable runnable = new Runnable() {
public void run() {
// run task
System.out.println("Run Task ...... ");
}
};

ScheduledExecutorService service = Executors.newSingleThreadScheduledExecutor();
service.scheduleAtFixedRate(runnable, 0, 1, TimeUnit.SECONDS);
service.scheduleWithFixedDelay(runnable, 0, 1, TimeUnit.SECONDS);
}