java--多线程之后台线程

public class ThreadDaemon {

    /**

     * @param args

     * 后台线程在主进程结束后，也会退出

     */

    public static void main(String[] args) {

        // TODO Auto-generated method stub

        ThreadImplementsTest tlt=new ThreadImplementsTest();

        Thread t1=new Thread(tlt);

        t1.setName("Daemon Thread test");

        t1.setDaemon(true);//如果一个进程中只用后台线程在运行，那么整个进程就会结束。

        t1.start();

    }

}

Output:

exit

Daemon Thread test====>进入loop()

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public class ThreadImplementsTest implements Runnable{

    public void loop(){

        String name=Thread.currentThread().getName();

        System.out.println(name+"====>进入loop()");

        for (int i = 0; i < 10; i++) {

            try {

                System.out.println(i);

                Thread.sleep(200);

            } catch (InterruptedException e) {

                // TODO Auto-generated catch block

                System.out.println(e.getLocalizedMessage());

                System.out.println(e.getMessage());

                e.printStackTrace();

            }

        }

        System.out.println(name+"=============>离开Loop");

    }

    /**

     * @param args

     */

    public static void main(String[] args) {

        // TODO Auto-generated method stub

        ThreadImplementsTest tst=new ThreadImplementsTest();

        tst.run();

        try {

            Thread.sleep(100);

        } catch (InterruptedException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        tst.loop();

    }

    public void run() {

        // TODO Auto-generated method stub

        loop();

    }

}