What are the differences between JVM, JRE and JDK? The main differences between JVM, JRE and JDK are listed below, JVM: Java Virtual Machine(JVM) is an abstract machine that provides a runtime ...

在Java并发编程的世界里，synchronized是一块绕不开的“基石”——它像一把“互斥锁”，守护着共享资源免受多线程“争抢”的伤害；又似一道“安全屏障”，将竞态条件、数据不一致等线程安全问题隔绝在外。然而，很多开发者对synchronized的认知停留在“加锁语法糖”层面，实践中频频踩坑： ...

DocMind AI provides local document analysis with zero cloud dependency. It combines hybrid retrieval (dense + sparse), optional knowledge graph extraction (GraphRAG), and a 5-agent coordinator to ...