/**
     *指定delay時(shí)間后執(zhí)行任務(wù)
     * @param command 執(zhí)行的線程任務(wù) Runnable不能返回執(zhí)行結(jié)果
     * @param delay 指定某個(gè)時(shí)間后執(zhí)行
     * @param unit 指定時(shí)間單位
     * @return
     */
    public ScheduledFuture schedule(Runnable command, long delay, TimeUnit unit) {
        return null;
    }
    /**
     *指定delay時(shí)間后執(zhí)行任務(wù)
     * @param callable 執(zhí)行的線程任務(wù) Callable返回執(zhí)行結(jié)果
     * @param delay 指定某個(gè)時(shí)間后執(zhí)行
     * @param unit 指定時(shí)間單位
     * @param
     * @return
     */
    publicScheduledFutureschedule(Callablecallable, long delay, TimeUnit unit) {
        return null;
    }
    /**
     *等待initiaDelay時(shí)間后，每個(gè)period時(shí)間執(zhí)行一次
     * @param command
     * @param initialDelay
     * @param period
     * @param unit
     * @return
     */
    public ScheduledFuture scheduleAtFixedRate(Runnable command, long initialDelay, long period, TimeUnit unit) {
        return null;
    }
    //scheduleWithFixedDelay和scheduleAtFixedRate差不多
    public ScheduledFuture scheduleWithFixedDelay(Runnable command, long initialDelay, long delay, TimeUnit unit) {
        return null;
    }

/**
 * @author kl by 2016/5/14
 * @boke www.kailing.pub
 */
public class Test  {
    public static int count=0;
    public static void main(String[] args) {
        //初始化兩個(gè)線城池大小的任務(wù)調(diào)度服務(wù)
        ScheduledExecutorService executorService= Executors.newScheduledThreadPool(2);
        //任務(wù)一：0秒后開始執(zhí)行，之后每秒執(zhí)行一次
        final ScheduledFuture test1= executorService.scheduleAtFixedRate(new Runnable() {
            public void run() {
                System.out.println("任務(wù)一執(zhí)行第"+(count++)+"次   "+Thread.currentThread());
            }
        },0, 1,TimeUnit.SECONDS);

        //任務(wù)二：6秒后開始執(zhí)行，并返回執(zhí)行結(jié)果
       final   ScheduledFuture test2 = executorService.schedule(new Callable() {
            public Object call()  {
                System.out.println("任務(wù)二執(zhí)行，傳遞執(zhí)行結(jié)果給任務(wù)三  "+Thread.currentThread());
                return "任務(wù)二已執(zhí)行完，請(qǐng)知曉！";
            }
        },6,TimeUnit.SECONDS);

        //任務(wù)三：8秒后執(zhí)行，打印任務(wù)二的結(jié)果，終止任務(wù)一
        executorService.schedule(new Runnable() {
            public void run() {
                try {
                    System.out.println(test2.get());
                }catch (Exception e){
                    e.printStackTrace();
                }
                System.out.println("任務(wù)三執(zhí)行，任務(wù)一終止  "+Thread.currentThread());
               test1.cancel(true);
            }
        },8,TimeUnit.SECONDS);

        System.out.println("我是最先執(zhí)行的嗎？不一定，雖然我是主線程  "+Thread.currentThread());
    }
}