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scheduledexecutorservice interface

Java

Last updated at 2023-01-23Posted at 2023-01-16

1秒後に実行
executorService#shutdown()することで
繰り返し処理が止まる

public class Outer {
    public static void main(String[] args) throws InterruptedException {
        ScheduledExecutorService s = Executors.newSingleThreadScheduledExecutor();
        s.schedule(() -> {
           System.out.println("xxx");
           s.shutdown();
        },1,TimeUnit.SECONDS);
        int count = 1;
        while(true) {
            Thread.sleep(100);
            if(s.isShutdown()) break;
           System.out.println((count++)*100);
        }
    }
}

1秒後に実行、その後定期２秒実行

public class Outer {
    public static void main(String[] args) throws InterruptedException {
        ScheduledExecutorService s = Executors.newSingleThreadScheduledExecutor();
        s.scheduleAtFixedRate(() -> {
           System.out.println("xxx");
//           s.shutdown();
        },1,2,TimeUnit.SECONDS);
        int count = 1;
        while(true) {
            Thread.sleep(100);
            //if(s.isShutdown()) break;
           System.out.println((count++)*100);
           if(count>100) {
               s.shutdown();
               break;
           }
        }
    }
}

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