生成随机数

package cn.how2j.springcloud;

import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;


public class TestXianCheng {
    public static void main(String[] args) {
        int a = 0;
        System.out.println(ThreadLocalRandom.current().nextInt());

        //ExecutorService executorService =
        ThreadPoolExecutor executorService = new ThreadPoolExecutor(2, 5, 5L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<Runnable>());
        executorService.submit(() -> {
            System.out.println(add(a));
                }

        );
    }
    public static int add(int a) {
        return a+1000;
    }
}