ScheduledExecutorService學習筆記

1.ScheduledExecutorService接口各實現類

2.ScheduledExecutorService接口下的方法

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代碼塊:

ScheduledExecutorService scheduledExecutorService = Executors.newScheduledThreadPool(3);
        System.out.println("調用開始...");
        long start = System.currentTimeMillis();
        scheduledExecutorService.scheduleWithFixedDelay(new Runnable() {
            @Override
            public void run() {
                System.out.println("運行間隔..." + (System.currentTimeMillis() - start) / 1000 + "s");
                System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));

            }
        }, 10l, 2l, TimeUnit.SECONDS); // 延遲十秒後,每隔兩秒運行一次

運行結果:

調用開始...
運行間隔...10s
2016-12-06 23:55:25
運行間隔...12s
2016-12-06 23:55:27
運行間隔...14s
2016-12-06 23:55:29
運行間隔...16s
2016-12-06 23:55:31
運行間隔...18s
2016-12-06 23:55:33
運行間隔...20s
2016-12-06 23:55:35
運行間隔...22s
2016-12-06 23:55:37
運行間隔...24s
2016-12-06 23:55:39
運行間隔...26s
2016-12-06 23:55:41

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