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!11 删除重复的并发工具类示例

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Merge pull request !11 from pengchen211/N/A
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SnailClimb 2021-04-25 11:09:49 +08:00 committed by Gitee
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docs/java/multi-thread/2020最新Java并发进阶常见面试题总结.md
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@ -968,7 +968,7 @@ protected final boolean compareAndSetState(int expect, int update) {
- **Exclusive**（独占）：只有一个线程能执行，如 `ReentrantLock`。又可分为公平锁和非公平锁：
- 公平锁：按照线程在队列中的排队顺序，先到者先拿到锁
- 非公平锁：当线程要获取锁时，无视队列顺序直接去抢锁，谁抢到就是谁的
- **Share**（共享）：多个线程可同时执行，如` CountDownLatch`、`Semaphore`、`CountDownLatch`、 `CyclicBarrier`、`ReadWriteLock` 我们都会在后面讲到。
- **Share**（共享）：多个线程可同时执行，如` CountDownLatch`、`Semaphore`、 `CyclicBarrier`、`ReadWriteLock` 我们都会在后面讲到。
`ReentrantReadWriteLock` 可以看成是组合式，因为 `ReentrantReadWriteLock` 也就是读写锁允许多个线程同时对某一资源进行读。