在 Java 5.0 提供了 java.util.concurrent（简称 JUC ）包，在此包中增加了在并发编程中很常用的实用工具类，用于定义类似于线程的自定义子系统，包括线程池、异步 IO 和轻量级任务框架。



- [JMM](java/JUC/Java-Memory-Model.md)
- [阻塞队列](java/JUC/BlockingQueue.md)
- [volatile](java/JUC/volatile.md)
- [阻塞队列](java/JUC/BlockingQueue.md)
- [ThreadLocal](java/JUC/ThreadLocal.md)
- [线程池](java/JUC/Thread-Pool.md)
- [CAS](java/JUC/CAS.md)
- [synchronized](java/JUC/synchronized.md)
- [各种锁](java/JUC/各种锁.md)
- [CountDownLatch、CyclicBarrier、Semaphore](java/JUC/CountDownLatch、CyclicBarrier、Semaphore.md)
- [AQS](java/JUC/AQS.md)

![J.U.C 类分类](https://img-blog.csdn.net/20170126201206425?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvdTAxMDg1MzI2MQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast)

![](https://tva1.sinaimg.cn/large/0081Kckwly1gkc498bgkkj310r0u0dhr.jpg)