java源文件多个类限制

一个".java"源文件中是否可以包含多个类（不是内部类）？有什么限制？

可以，但一个源文件中最多只能有一个公开类（public class）而且文件名必须和公开类的类名完全保持一致。

一个".java"源文件中是否可以包括多个类（不是内部类）？有什么限制？

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