(This course explains the JUC concurrency library in depth, and lays a solid foundation for the practice of high-concurrency program development through the analysis of openjdk and assembly source code. Including all Java locks + JMM + volatile + CAS + AQS + all atomic operation classes + ThreadLocal + synchronous lock upgrade + StampedLock + concurrent comprehensive actual combat CompletableFuture, etc., from usage to principle and common concurrency knowledge in-depth detailed source code analysis, to help you thoroughly master high concurrency knowledge system, providing detailed solutions for future development work.)