關於「Java classes in different files」標籤，搜尋引擎有相關的訊息討論：

How can I separate classes into different files? - java - Stack Overflowstackoverflow.com › questions › how-can-i-separate-classe...Multiple classes in a single Java source file | by Vince Arter, Jr.vinniedaarm.medium.com › multiple-classes-in-a-single-ja...Do I need to have a