前文（深入JVM锁机制synchronized）分析了JVM中的synchronized实现，本文继续分析JVM中的另一种锁Lock的实现。与synchronized不同的是，Lock完全用Java写成，在java这个层面是无关JVM实现的。

finally { lock.unlock(); result.clear(); // 清空状态为下次计算准备 ... 也就是进入了 AQS 的 acquireSharedInterruptibly 的模板方法里面了。 java.util.concurrent.Semaphore#acquire()源码如下。 public void acquire() throws ...

Guava is a set of core Java libraries from Google that includes new collection types (such as multimap and multiset), immutable collections, a graph library, and utilities for concurrency, I/O, ...

This extension for StarUML(http://staruml.io) support to generate Java code from UML model and to reverse Java code to UML model. Install this extension from ...