java - 方法返回可运行对象

Question

我可以用 Java 做这样的事情吗:

 protected Runnable getRunnable(final int seconds) {
    Runnable runnable = new Runnable() {
        public void run() {
                sendData();             
                try {
                    Thread.sleep(seconds * 1000);
                } 
                catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                }
        }
    };
    return runnable;
}

然后:

protected void startTimer(int seconds) throws InterruptedException,NullPointerException {
    Thread thread = new Thread(getRunnable(seconds));
    thread.start();
}

上述过程安全吗？

Answer 1

在评论中你说

All I'm trying to do is to execute sendData() method every a specific amount of seconds(i.e. every 15 seconds)

然后使用内置计时器来为您组织，例如:

ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
Runnable r = new Runnable() {
    @Override
    public void run() {
        sendData();
    }
};
ScheduledFuture<?> future = scheduler.scheduleAtFixedRate(r, 0, 15, TimeUnit.SECONDS);

//when you want to cancel the scheduled task
future.cancel(true);

//and before you leave your program, don't forget to call:
scheduler.shutdown();