线程1—Runnable

随便选择两个城市作为预选旅游目标。实现两个独立的线程分别显示10次城市名，每次显示后休眠一段随机时间(1000ms以内)，哪个先显示完毕，就决定去哪个城市。分别用Runnable接口和Thread类实现。

import java.util.*;

public class Ly_Runnable implements Runnable {
    public void run() {
        test();
    }

    public void test() {
        Random r = new Random();
        try {
            for (int i = 1; i <= 10; i++) {
                int a = r.nextInt(1000);
                Thread.sleep(a);
                System.out.print(a + "秒后去");
                System.out.println(Thread.currentThread().getName());
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        Thread tr1 = new Thread(new Ly_Runnable());
        tr1.setName("淄博");
        tr1.start();
        
        Thread tr2 = new Thread(new Ly_Runnable());
        tr2.setName("青岛");
        tr2.start();
    }
}

运行：