跟着狂神的课学下来的,多线程龟兔赛跑里面,不明白为什么run 里面 fori 的 break 执行之后,另一条线程也随之停止了
代码如下
//模拟龟兔赛跑
public class Race implements Runnable {
//胜利者
private static String winner;
@Override
public void run() {
for (int i = 0; i <= 101; i++) {
//模拟兔子休息
if (Thread.currentThread().getName().equals("兔子")&& i%10==0){
try {
Thread.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
//判断比赛是否结束
boolean flag = gameOver(i);
//如果比赛结束
if (flag){
break;
}
System.out.println(Thread.currentThread().getName()+"跑了"+i+"步");
}
}
//判断是否完成比赛
private boolean gameOver(int steps){
if (winner!=null){//已经存在胜利者了
return true;
}{//这样写也是 else
if (steps>=101){//防bug
winner = Thread.currentThread().getName();
System.out.println("winner is "+winner);
return true;
}
}
return false;
}
public static void main(String[] args) {
Race race = new Race();
new Thread(race,"兔子").start();
new Thread(race,"乌龟").start();
}
}