在Java集合框架中,ListIterator是一个比普通Iterator更强大的双向迭代器。 它允许开发者在遍历List集合时进行元素修改、添加和删除操作,而不会引发ConcurrentModificationException异常。 这个特性使得ListIterator成为处理动态集合场景的理想工具。
1. 从顶层接口俯瞰整个集合框架的骨架 很多初学者打开Java文档看java.util包,第一反应是头晕——几十个类和接口铺在那里,根本分不清谁是谁。实际上集合框架的设计非常规整,整个体系就是一棵围绕两个顶级接口展开的树。
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