Package === * 此檔案所在的命名空間 ```python= package XXXX ``` * 要使用的 `class` 的路徑 ```python= import XXXX ``` ## Ref. [https://ethan-imagination.blogspot.com/2018/11/javase-gettingstarted-009.html](https://ethan-imagination.blogspot.com/2018/11/javase-gettingstarted-009.html) ###### tags: `介紹`