据我了解到现在看来，这是不可能在C＃

As I learned it seems it isn't possible in C#

C＃中如何导入命名空间一下子

是否有可能在Java中？

Is it possible in Java ?

推荐答案

没有。

import javax.swing.*;

将仅导入类的的javax.swing 包。它不会导入子包，如 javax.swing.event中的。您将需要一个单独的进口为每个分装：

will import only the classes in the javax.swing package. It will not import subpackages such as javax.swing.event. You would need a separate import for each subpackage:

import javax.swing.event.*;