JUC学习笔记（5）—ReadWriteLockDemo

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原创最新推荐文章于 2026-04-15 21:31:13 发布 161 阅读 AI 写同款· GEO 优化 ›

Java基础高级进阶篇之并发篇详解（详解篇四十六）本文摘要： Java并发编程（JUC）知识点详解，包含14个核心主题：1.并发基础概念（并发/并行区别、进程/线程关系、线程生命周期与创建方式）；2.Java内存模型（JMM）原理与三大特性（原子性、可见性、有序性）；3.锁机制（synchronized、Lock接口实现类）；4.原子操作与CAS原理；5.线程通信与同步工具（CountDownLatch等）；6.线程池工作原理与使用；7.并发集合类；8.异步编程模式；9.ThreadLocal原理；10.JDK21虚拟线程特性；11.结构化并发；12.常见阅读详情

一个线程写入,100个线程读取

import java.util.concurrent.locks.ReentrantReadWriteLock;


class MyQueue
{
	private Object obj;
	private ReentrantReadWriteLock rwLock = new ReentrantReadWriteLock();

	public void writeObj(Object obj)
	{
		rwLock.writeLock().lock();
		try 
		{
			this.obj = obj;
			System.out.println(Thread.currentThread().getName()+"\t"+obj);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			rwLock.writeLock().unlock();
		}
	}
	
	public void readObj()
	{
		rwLock.readLock().lock();
		try 
		{
			System.out.println(Thread.currentThread().getName()+"\t"+obj);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			rwLock.readLock().unlock();
		}
	}	
}


public class ReadWriteLockDemo
{
	public static void main(String[] args) throws InterruptedException
	{
		MyQueue q = new MyQueue();
		
		new Thread(() -> {
			q.writeObj("ClassName1018");
		}, "writeThread").start();
		
		Thread.sleep(100);
		
		for (int i = 1; i <=100; i++) 
		{
			new Thread(() -> {
				q.readObj();
			},String.valueOf(i)).start();
		}
		
	}
}

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