龟兔赛跑--多线程运行操作判断及代码

public class Test03 implements Runnable {
    private static String winner;
    @Override
    public void run() {
                //比赛总里程100步
                for (int i = 0; i <=100; i++) {
                    //调用getWinner方法判断步数是否满足总里程100，有Winner返回ture，否则false
                    boolean flag = getWinner(i);
                    //有Winner则为false，不满足条件，跳过if判断
                    if (flag){
                        //为ture则进入条件，break结束循环
                        break;
                    }
                    System.out.println(Thread.currentThread().getName()+"跑了"+i+"步");
                }
    }
public boolean getWinner(int steps){
    if (winner!=null){//有赢家
        return true;
    }else {
        if (steps>=100){
            winner = Thread.currentThread().getName();
            System.out.println("赢家是"+winner);
            return true;
        }
    }
    return false;
}


    public static void main(String[] args) {
//一个主线程，两个分线程分别去抢占主程序的cpu资源
        Test03 test03 = new Test03();
        new Thread(test03,"乌龟").start();
        new Thread(test03,"兔子").start();
    }
}