package com.mmall.concurrency.example.sync;

import lombok.extern.slf4j.Slf4j;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

@Slf4j
public class SynchronizedExample2 {

    // 修饰一个类
    public static void test1(int j) {
        synchronized (SynchronizedExample2.class) {
            for (int i = 0; i < 10; i++) {
                log.info("test1 {} - {}", j, i);
            }
        }
    }

    // 修饰一个静态方法
    public static synchronized void test2(int j) {
        for (int i = 0; i < 10; i++) {
            log.info("test2 {} - {}", j, i);
        }
    }

    public static void main(String[] args) {
        SynchronizedExample2 example1 = new SynchronizedExample2();
        SynchronizedExample2 example2 = new SynchronizedExample2();
        ExecutorService executorService = Executors.newCachedThreadPool();
        executorService.execute(() -> {
            example1.test1(1);
        });
        executorService.execute(() -> {
            example2.test2(2);
        });
    }
}

Ps：这里一定保证是 test1 0-9 然后 test2 0-9 吗？为什么？按理说不同对象不同方法，应该互相不受影响了，难道这时候是线程池起到作用了？