目录Java中Map.Entry深度解析：键值对的精髓与应用实践一、Map.Entry的本质与设计意义二、核心方法详解与使用场景1. 基础方法三剑客2. Java 8 增强方法三、四种获取Map.Entry的方式1. entrySet()遍历（最常用）2. 迭
A day ago my application was one EAR, containing one WAR, one EJB JAR, and a couple of utility JAR files. I had a POJO singleton class in one of those utility files, it worked, and all was well with t
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