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Spring 基础
首先Spring提供的功能有: Inversion of control (IOC): Loose coupling is achieved in spring using the technique Inversion of Control. The objects give their dependencies instead of creating or looking for dependent objects. Aspect oriented (AOP): Spring supports...
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java 中Collection/Map 的比较
首先java中各种collection或者Map类层次关系如下： Collection ├List │├LinkedList │├ArrayList │└Vector │ └Stack └Set Map ├Hashtable ├HashMap └WeakHashMap 1. Collection接口 Collection是最基本的集合接口，声明了适用于JAVA集合（只包括Set和List）的通用方法。 Set 和List 都继承了Conllection,Map。 1.1Collection接口的方法：...
