HareRunnable.java

package edu.mama.ls18.homework;
/*
兔子
*/
_public class HareRunnable implements Runnable {
private Race race;
public HareRunnable(Race race) {
if (race == null) {
throw new IllegalArgumentException(“race不能为null”);
}
this.race = race;
}
@Override
public void run() {
//兔子状态，每秒+1…-5~-1表示奔跑 非负表示休息；状态=0需要随机决定休息时长；状态=休息时长 休息结束
int state = -5;
//兔子休息时间
int rest=Integer._MAX_VALUE;

    while (race.isPlaying){<br />            if(state<0) {<br />                race.hareDistance += 3;<br />                System._out_.println("兔子：奔跑");<br />            }else if(state==0){<br />                rest=(int)(Math._random_()*16+5);     //[0,16)+5->[5,21)->int强制转换为[5,20]内整数<br />                System._out_.println("兔子：需要休息"+rest);<br />                System._out_.println("兔子：休息");<br />            }<br />            else{<br />                System._out_.println("兔子：休息");<br />            }
        state++;<br />            if(state==rest) state=-5;
        try {<br />                Thread._sleep_(1000);<br />            } catch (InterruptedException e) {<br />                e.printStackTrace();<br />            }
    }<br />    }<br />}