2021-05-19

课堂代码

public class Demo01 extends Thread {
    public Demo01() {
    }

    public Demo01(String name) {
        super(name);
    }

    public void run() {
        System.out.println("这是一个新的线程，自己实现的");
        System.out.println("名字：" + Thread.currentThread().getName());
    }
}

public class TestDemo01 {
    public TestDemo01() {
    }

    public static void main(String[] args) {
        Demo01 demo01 = new Demo01("1");
        Demo01 demo02 = new Demo01("2");
        Demo01 demo03 = new Demo01("3");
        Demo01 demo04 = new Demo01("4");
        demo01.setPriority(1);
        demo02.setPriority(3);
        demo03.setPriority(7);
        demo04.setPriority(10);
        demo01.start();
        demo02.start();
        demo03.start();
        demo04.start();
    }
}

public class Demo02 implements Runnable {
    public Demo02() {
    }

    public void run() {
        System.out.println("新线程，实现接口的方式");
    }
}

public class TestDemo02 {
    public TestDemo02() {
    }

    public static void main(String[] args) {
        Demo02 demo02 = new Demo02();
        Thread thread = new Thread(demo02);
        thread.start();
    }
}

public class DamemonThread implements Runnable {
    public DamemonThread() {
    }

    public void run() {
        System.out.println("进入守护线程" + Thread.currentThread().getName());
        System.out.println("守护线程开工了.....");
        this.writeToFile();
        System.out.println("退出守护线程" + Thread.currentThread().getName());
    }

    public void writeToFile() {
        for(int count = 0; count < 999; ++count) {
            System.out.println("守护线程" + Thread.currentThread().getName() + count);
        }

    }
}

public class TestDemo03 {
    public TestDemo03() {
    }

    public static void main(String[] args) throws InterruptedException {
        System.out.println("进入主线程" + Thread.currentThread().getName());
        DamemonThread damemonThread = new DamemonThread();
        Thread thread = new Thread(damemonThread);
        thread.setDaemon(true);
        thread.start();
        Thread.sleep(500L);
        System.out.println("你好，世界");
        System.out.println("退出主线程" + Thread.currentThread().getName());
    }
}

public class Demo04 {
    public Demo04() {
    }

    public static void main(String[] args) {
        Runnable r = new Runnable() {
            public void run() {
                System.out.println(Thread.currentThread().getName() + "卖出1张票，还剩：" + --TickerContent.count + "张");
            }
        };
        (new Thread(r, "1")).start();
        (new Thread(r, "2")).start();
        (new Thread(r, "3")).start();
        (new Thread(r, "4")).start();
        (new Thread(r, "5")).start();
        (new Thread(r, "6")).start();
    }
}

public class TickerContent {
    public static int count = 50;

    public TickerContent() {
    }
}