java学习笔记 --- 多线程（多线程的控制）

public class ThreadSleep extends Thread {
    @Override
    public void run() {
        for (int x = 0; x < 100; x++) {
            System.out.println(getName() + ":" + x + ",日期：" + new Date());
            // 睡眠
            // 困了，我稍微休息1秒钟
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

/*
 * 线程休眠
 *        public static void sleep(long millis)
 */
public class ThreadSleepDemo {
    public static void main(String[] args) {
        ThreadSleep ts1 = new ThreadSleep();
        ThreadSleep ts2 = new ThreadSleep();
        ThreadSleep ts3 = new ThreadSleep();

        ts1.setName("林青霞");
        ts2.setName("林志玲");
        ts3.setName("林志颖");

        ts1.start();
        ts2.start();
        ts3.start();
    }
}

public class ThreadJoin extends Thread {
    @Override
    public void run() {
        for (int x = 0; x < 100; x++) {
            System.out.println(getName() + ":" + x);
        }
    }
}

/*
 * public final void join():等待该线程终止。 
 */
public class ThreadJoinDemo {
    public static void main(String[] args) {
        ThreadJoin tj1 = new ThreadJoin();
        ThreadJoin tj2 = new ThreadJoin();
        ThreadJoin tj3 = new ThreadJoin();

        tj1.setName("李渊");
        tj2.setName("李世民");
        tj3.setName("李元霸");
        //先执行完"李渊"在执行其他线程
        tj1.start();
        try {
            tj1.join();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        
        tj2.start();
        tj3.start();
    }
}
    

public class ThreadYield extends Thread {
    @Override
    public void run() {
        for (int x = 0; x < 100; x++) {
            System.out.println(getName() + ":" + x);
　　　　　　　//调用礼让线程方法
            Thread.yield();
        }
    }
}
/*
 * public static void yield():暂停当前正在执行的线程对象，并执行其他线程。 
 * 让多个线程的执行更和谐，但是不能靠它保证一人一次。
 */
public class ThreadYieldDemo {
    public static void main(String[] args) {
        ThreadYield ty1 = new ThreadYield();
        ThreadYield ty2 = new ThreadYield();

        ty1.setName("线程1");
        ty2.setName("线程2");

        ty1.start();
        ty2.start();
    }
}

public class ThreadDaemon extends Thread {
    @Override
    public void run() {
        for (int x = 0; x < 100; x++) {
            System.out.println(getName() + ":" + x);
        }
    }
}
/*
 * public final void setDaemon(boolean on):将该线程标记为守护线程或用户线程。
 * 当正在运行的线程都是守护线程时，Java 虚拟机退出。 该方法必须在启动线程前调用。 
 * 
 * 游戏：坦克大战。
 */
public class ThreadDaemonDemo {
    public static void main(String[] args) {
        ThreadDaemon td1 = new ThreadDaemon();
        ThreadDaemon td2 = new ThreadDaemon();

        td1.setName("关羽");
        td2.setName("张飞");

        // 设置收获线程
        td1.setDaemon(true);
        td2.setDaemon(true);
　　　　//守护线程必须在线程启动前设置
        td1.start();
        td2.start();

        Thread.currentThread().setName("刘备");
        for (int x = 0; x < 5; x++) {
            System.out.println(Thread.currentThread().getName() + ":" + x);
        }
    }
}
            

public class ThreadStop extends Thread {
    @Override
    public void run() {
        System.out.println("开始执行：" + new Date());

        // 我要休息10秒钟，亲，不要打扰我哦
        try {
            Thread.sleep(10000);
        } catch (InterruptedException e) {
            // e.printStackTrace();
            System.out.println("线程被终止了");
        }

        System.out.println("结束执行：" + new Date());
    }
}
/*
 * public final void stop():让线程停止，过时了，但是还可以使用。
 * public void interrupt():中断线程。 把线程的状态终止，并抛出一个InterruptedException。
 */
public class ThreadStopDemo {
    public static void main(String[] args) {
        ThreadStop ts = new ThreadStop();
        ts.start();

        // 你超过三秒不醒过来，我就干死你
        try {
            Thread.sleep(3000);
            // ts.stop();
            ts.interrupt();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

public class ThreadPriority extends Thread {
    @Override
    public void run() {
        for (int x = 0; x < 100; x++) {
            System.out.println(getName() + ":" + x);
        }
    }
}
public class ThreadPriorityDemo {
    public static void main(String[] args) {
        ThreadPriority tp1 = new ThreadPriority();
        ThreadPriority tp2 = new ThreadPriority();
        ThreadPriority tp3 = new ThreadPriority();

        tp1.setName("东方不败");
        tp2.setName("岳不群");
        tp3.setName("林平之");

        // 获取默认优先级，线程的默认优先级为5
        // System.out.println(tp1.getPriority());
        // System.out.println(tp2.getPriority());
        // System.out.println(tp3.getPriority());

        // 设置线程优先级,错误：线程的优先级范围：1-10
        // tp1.setPriority(100000);
        
        //设置正确的线程优先级
        tp1.setPriority(10);
        tp2.setPriority(1);

        tp1.start();
        tp2.start();
        tp3.start();
    }
}