package wzh.daemon;

import java.util.concurrent.TimeUnit;

class ADaemon implements Runnable {

    @Override

    public void run() {

        try {

            System.out.println("Starting ADaemon");

            TimeUnit.SECONDS.sleep(1);

        } catch (Exception e) {

            System.out.println("Exiting via InterruptedException");

        } finally {

            //如果是后台线程，则finally不会被执行。

            //因为主线程退出后，后台线程就自动退出了。

            System.out.println("This should always run?");

        }

    }

}

public class DaemonsDontRunFinally {

    public static void main(String[] args) {

        Thread thread = new Thread(new ADaemon());

        thread.setDaemon(true);

        thread.start();

    }

}