简单的java多线程源码分享(二)

/**
 * 军队线程
 * 模拟作战双方的行为
 * @author gent
 *
 */
public class ArmyRunnable implements Runnable{
    //volatile保证了线程可以正确读取其他线程写入的值
    //可见性 ref JMM,happens-before原则
    volatile boolean keepRunning = true;

    @Override
    public void run() {
        while (keepRunning) {
            //发动5连击
            for(int i=0;i<5;i++){
                System.out.println(Thread.currentThread().getName()+"进攻对方["+i+"]次");
                //让出处理器时间,下次该谁进攻还不一定
                Thread.yield();
            }
        }
        System.out.println(Thread.currentThread().getName()+"结束了战斗!");
    }

}

/**
 * 关键人物类
 * @author gent
 *
 */
public class KeyPersonThread extends Thread{
    public void run(){
        System.out.println(Thread.currentThread().getName()+"开始了战斗");
        for(int i=0;i<10;i++){
            System.out.println(Thread.currentThread().getName()+"左突右杀,攻击隋军");
        }

        System.out.println(Thread.currentThread().getName()+"结束了战斗");
    }
}

/**
 * 隋唐演绎舞台
 * @author gent
 *
 */
public class Stage extends Thread {

    public void run(){
        System.out.println("欢迎观看隋唐演义");
        try {
            Thread.sleep(5000);
        } catch (InterruptedException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }

        ArmyRunnable armyTaskOfDynasty = new ArmyRunnable();
        ArmyRunnable armyTaskOfRevolt = new ArmyRunnable();
        //使用Runnable接口创建线程
        Thread armyOfSuiDynasty = new Thread(armyTaskOfDynasty,"隋军");
        Thread armyOfRevolt = new Thread(armyTaskOfRevolt,"农民起义军");

        //启动线程,让军队开始作战
        armyOfSuiDynasty.start();
        armyOfRevolt.start();

        //舞台线程休眠,大家专心观看军队厮杀
        try {
            Thread.sleep(50);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        System.out.println("正当双方激战正酣,半路杀出个程咬金");

        Thread mrCheng = new KeyPersonThread();

        mrCheng.setName("程咬金");

        System.out.println("程咬金的理想就是结束战争,使百姓安居乐业!");

        //鸣金收兵
        //停止线程的方法
        armyTaskOfDynasty.keepRunning=false;
        armyTaskOfRevolt.keepRunning=false;
        //不应该使用stop方法停止线程,因为这是一种戛然而止的方式
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        mrCheng.start();
        try {
            mrCheng.join();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        System.out.println("战争结束,人民安居乐业,程先生实现了人生理想!");
        System.out.println("演出结束");
//      try {
//          armyOfRevolt.join();
//      } catch (InterruptedException e) {
//          // TODO Auto-generated catch block
//          e.printStackTrace();
//      }
    }

    public static void main(String[] args) {
        new Stage().start();
    }
}