JavaSe_Collection篇

時間 2019-12-05

原文原文鏈接

(一)集合和數組的區別:數組 1 長度的區別安全 a 數組長度是固定的數據結構 b 集合長度是可變的工具 2 存儲數據類型的區別線程 a 數組既能夠存儲基本數據類型,也能夠存儲引用數據類型3d b 集合只能存儲引用數據類型對象 3 存儲元素的區別blog a 數組存儲同一種類型的元素排序 b 集合能夠存儲多個類型的元素索引 (二)Collection集合的子接口 1 List: 1.1 Array

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