Compact source files should not cause package error when placed in subfolders

I am a teacher and I want to use Compact Source files in my courses. But since the students will have many programs to write, I want to place them in subfolders. Right now, when I do that, I get a compile error that the package does not match the folder where the Compact Source file is located : The declared package "" does not match the expected package "sandbox" Java(536871240) .

Is it possible to add the relative path of the Compact Source implicitly to the classpath/sourcepath while compiling/running/debugging the file? So each time a Compact Source is detected, only the relative path to that file is added, not all path to all Compact Source in the project. An option could be useful, like "Implicitly add relative path of Compact Source to sourcepath : true/false".

使用子文件夹中的 Compact Source 文件重现 Java(536871240) 包错误，然后跟踪 Compact Source 文件在编译、运行和调试期间的处理方式。完成标准是：启用该行为时，文件无需出现包不匹配错误即可从其子文件夹正常工作，并且仅将其相对路径添加到 sourcepath 中。