public Animal{
 //变量
        String name；  //动物的种类
        int distance;  //赛跑的总路程
        int speed;   //每个动物的速度，假设为匀速
        int predistance = 0;  //当前里程，用于输出
        
 //构造
        public Animal(String name,int speed,int distance){
        this.name = name;
        this.speed = speed;
        this.distance = distance;
        }
        /*
        *比赛规则：当前里程=时间（用Math下的random方法随机一个时间）X 速度
        *当跑总路程输出“我跑完了”
        */
        public void race{
             while(predistance<distance){
               try{
                     Thread.sleep((int)(Math.random()*1000+500));
                   }catch(InterruptedException e){
                   e.printStackTrace();
                   }
                   predistance += Math.random()*speed;
                   System.out.println(name + ":我跑了：" + predistance + "米");
                   }
                   System.out,println("我跑完了")；
                   }
        }

public class Race extends Thread{
       Animal animal;
       public Race(Animal animal){
          this.animal = animal;
          }
          @Override
          public void run(){
          animal.run();
          }
          

public class Test{
    public static void main(String[] args){
    Animal rabbit = new Animal("兔子",15,50);
    Animal turtle = new Animal("乌龟",12,50);
    Race thread1 = new Race(rabbit);
    Race threas2 = new Race(turtle);
    thread1.start();
    thread2.start();
    }
    }