数组列表检索顺序 [英] Array List retrieval order

问题描述

我有一个 java ArrayList，我向其中添加了 5 个对象.

I have a java ArrayList to which I add 5 objects.

如果我遍历列表并打印出来，那么遍历列表并再次打印出来.

If I iterate over the list and print them out, then iterate over the list and print them out again.

这两种情况下的检索顺序是否相同?(我知道它可能与插入顺序不同)

Will the retrieval order in these 2 cases be the same? (I know it may be different from the insertion order)

推荐答案

是的，假设您没有修改中间的列表.来自 http://docs.oracle.com/javase/6/docs/api/java/util/List.html:

Yes, assuming you haven't modified the list in-between. From http://docs.oracle.com/javase/6/docs/api/java/util/List.html:

迭代器

迭代器迭代器()

以适当的顺序返回此列表中元素的迭代器.

Returns an iterator over the elements in this list in proper sequence.

可能有点含糊，但在该页面的其他部分，该术语的定义是:

A bit vague, perhaps, but in other portions of that page, this term is defined:

正确的顺序(从第一个元素到最后一个元素)

proper sequence (from first to last element)

这篇关于数组列表检索顺序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！