Java之多线程实例

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package thread;//军队线程//模拟作战双方的行为public class ArmyRunnable implements Runnable {    //volatile保证了线程可以正确的读取其他线程写入的值//保证可见性,ref JMM,happens-before原则//修饰被不同线程访问和修改的变量volatile boolean keepRunning = true;@Overridepublic 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+"]");//让出了处理器时间，下一次进程的执行是随机的Thread.yield();}}     System.out.println("战斗结束！");}}

package thread;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！");}}

package thread;/** * 隋唐演义大戏舞台 */public class Stage extends Thread {public void run() {ArmyRunnable armyTaskOfSuiDynasty = new ArmyRunnable();ArmyRunnable armyTaskOfRevolt = new ArmyRunnable();// 使用Runnable接口创建线程Thread armyOfSuiDynasty = new Thread(armyTaskOfSuiDynasty, "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try {Thread.sleep(50);} catch (InterruptedException e) {e.printStackTrace();}try {armyOfRevolt.join();} catch (InterruptedException e) {e.printStackTrace();}System.out.println("正当双方激战正酣，半路杀出了个程咬金");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！");//停止军队作战//停止线程的方法armyTaskOfSuiDynasty.keepRunning = false;armyTaskOfRevolt.keepRunning = false;    try {Thread.sleep(2000);} catch (InterruptedException e) {e.printStackTrace();}/** * 历史大戏留给关键人物 */mrCheng.start();//万众瞩目，所有线程等待程先生完成历史使命try {mrCheng.join();} catch (InterruptedException e) {e.printStackTrace();}System.out.println("战争结束，人民安居乐业，程先生实现积极的人生梦想，为人民做出了贡献");}public static void main(String[] args) {new Stage().start();}}

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