摘要: 总结Collection 概念: API: 增: boolean add(E e) boolean addAll(Collection c)//只要原集合发生修改,便放回true 删: void clear() boolean remove(Object o) boolean removeAll(C 阅读全文
posted @ 2020-07-12 23:35 JC97 阅读(187) 评论(0) 推荐(0) 编辑