基于callable多线程编程模拟龟兔赛跑过程

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/** * 本程序实现龟兔赛跑模拟 * 基于callable的多线程编程 */import java.util.concurrent.Callable;import java.util.concurrent.ExecutionException;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;import java.util.concurrent.Future;public class Main {    public static void main(String[] args) throws InterruptedException, ExecutionException {        ExecutorService eService = Executors.newFixedThreadPool(2);//建立线程数目        Race rabbit = new Race("小白兔", 100);  //创建实例        Race tortoise = new Race("千年王八", 500);  //        Future< Integer> num1 = eService.submit(rabbit);  //线程关联实例        Future<Integer> num2 = eService.submit(tortoise);        Thread.sleep(5000);        rabbit.setFlag(false);        tortoise.setFlag(false);        System.out.println("小白兔跑了--->"+num1.get()+"步");        System.out.println("千年王八跑了--->"+num2.get()+"步");    }}class Race implements Callable<Integer>{        public Race(String name, long time) {            this.time = time;            this.name = name;        }        public boolean isFlag() {            return flag;        }        public void setFlag(boolean flag) {            this.flag = flag;        }        private String name;        private long time;//延迟时间        private boolean flag = true;        private int num =0;        @Override        public Integer call() throws Exception {            while(flag)            {                Thread.sleep(time);                num++;            }            return num;        }}
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