public class ArmRunnable implements Runnable {

/**

?* 軍隊runnable

?* 模擬雙發作戰的行為

?*?

?*/

volatile boolean keepRuning=true;

@Override

public void run() {

while(keepRuning){

//發動5連擊

for(int i=0;i<5;i++){

System.out.println(Thread.currentThread().getName()+"進攻對方["+i+"]");

//讓出了處理器時間，下次該誰進攻還不一定呢！

Thread.yield();

}

}

System.out.println(Thread.currentThread().getName()+"結束了戰斗！");

}

public class Stage extends Thread {

private final Object obj=new Object();

public void run(){

// TODO 自動生成的方法存根

System.out.println("隋唐演義上演，大幕徐徐拉開");

try {

Thread.sleep(2000);

} catch (InterruptedException e) {

// TODO 自動生成的 catch 塊

e.printStackTrace();

}

//軍隊登場

ArmRunnable suijun=new ArmRunnable();

ArmRunnable ?qiyijun=new ArmRunnable();

?

//構建兩個線程

Thread sui=new Thread(suijun,"隋軍");

Thread nong=new Thread(qiyijun,"農民起義軍");

sui.start();

nong.start();

suijun.keepRuning=false;

qiyijun.keepRuning=false;

不知道我又錯在哪里了？