package com.xiao.testThread;    //模拟龟兔赛跑  public class Race implements Runnable {     private static String winner;//胜利者      @Override      public void run() {            for(int i=0;i<=100;i++){              //模拟兔子休息              if(Thread.currentThread().getName().equals("兔子") && i%10==0){                  try {                      Thread.sleep(5);                  } catch (InterruptedException e) {                      e.printStackTrace();                  }              }                boolean flag=gameOver(i); //判断比赛是否结束              if (flag){//如果比赛结束了，就停止程序                  break;              }              System.out.println(Thread.currentThread().getName()+"-->跑了"+i+"步");          } }          //判断是否完成比赛          private boolean gameOver(int steps){            //判断是否有胜利者          if(winner!=null){              return true;          }{              if(steps>=100){                  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();        }  }