字典类 [英] Dictionary class

问题描述

可以在Java字典类中为单个键设置多个值。

Is it possible to have multiple values, for a single key, in the Java dictionary class?

推荐答案

字典类：该类被认为是obselete，文档建议使用Map代替。

First, regarding the dictionary class: That class is considered obselete, the documentation recommends using Map instead.

您正在寻找的这种集合称为多图。
你可以用一个列表实现一个，但是很繁琐。

This kind of collection you are seeking is called a multimap. You could implement one yourself with a list, but that is tedious.

你可以使用来自Apache Collections或者Google Collections的MultiMap。虽然我个人是apache集合的粉丝，他们不真正支持泛型，所以一个Google multimap可能会更安全。

You may want to use a MultiMap from either Apache Collections or from the Google Collections. While I am personally a fan of the apache collections, they do not really support generics, so a Google multimap may be safer.

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