摘要: Map以键和值为一对存放,V可以是各种对象,当然可以是集合,键值K唯一,K->V是满射关系Map重要方法:Set keySet()——获取所有键值,存放至Set集合中,然后就可以使用Set的迭代器,结合Map的V get(Object key),得到对应value值Set> entrySet()——... 阅读全文
posted @ 2015-08-19 09:47 洱海 阅读(129) 评论(0) 推荐(0) 编辑
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