星型导入是否包含Java中的子包？ [英] Does the star import include subpackages in Java?

问题描述

当您声明这样的导入时：

When you declare an import like this:

import com.microsoft.azure.storage.*;

这包括其子包中的所有内容吗？例如，它是否包含此内容？

Does that include everything in its subpackages too? For example, does it include this?

import com.microsoft.azure.storage.blob.*

如果没有，为什么不呢？ （编辑：为什么问题基本上是偏离主题。在考虑正确答案时忽略该位。）

If not, why not? ( the "why" question is basically off topic. ignoring that bit when considering a correct answer.)

推荐答案

没有它才不是。它只导入包中的所有内容（即目录本身）。子目录被认为是不同的包，因此您需要：

No it does not. It only imports everything in the package (i.e. the directory itself). Sub-directories are considered to be different packages, so you would need to:

import com.microsoft.azure.storage.*
import com.microsoft.azure.storage.blob.*

至于为什么语言设计师选择走这条路，人们只能猜测，但他们决定采用的系统确实允许更细粒度的方法。

As to why the language designers chose to go this route, one can only guess, but the system that they decided to go with does allow for a more fine-grained approach.

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