java 线程中使用lamba表达式

举例

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 < 3; 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 < 3; 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(new Runnable() {
            @Override
            public void run() {
                example1.test1(1);
                System.out.println(Thread.currentThread().getName()+":使用正常方式创建线程");
            }
        });
        executorService.execute(() -> {
            example2.test1(2);
            System.out.println(Thread.currentThread().getName()+":使用lambda表达式创建线程");


    });
    }
}

输出

14:44:09.488 [pool-1-thread-1] INFO com.mmall.demo.example.sync.SynchronizedExample2 - test1 1 - 0
14:44:09.493 [pool-1-thread-1] INFO com.mmall.demo.example.sync.SynchronizedExample2 - test1 1 - 1
14:44:09.493 [pool-1-thread-1] INFO com.mmall.demo.example.sync.SynchronizedExample2 - test1 1 - 2
pool-1-thread-1:使用正常方式创建线程
14:44:09.594 [pool-1-thread-1] INFO com.mmall.demo.example.sync.SynchronizedExample2 - test1 2 - 0
14:44:09.594 [pool-1-thread-1] INFO com.mmall.demo.example.sync.SynchronizedExample2 - test1 2 - 1
14:44:09.594 [pool-1-thread-1] INFO com.mmall.demo.example.sync.SynchronizedExample2 - test1 2 - 2
pool-1-thread-1:使用lambda表达式创建线程