How can I link some src to my project like Eclipse?

I have some java source in some folders(not in any project),and I want to link them to my project instead of copy them to my project folder.
I can link any number of src folder into my project in Eclipse easily,but I can not find how can I do it in IDEA,Is there some suggest?
Thanks!

1

in module configuration you need to "Add Content Root" pointing it to yor external src folder and then set it as Sources (usually it will be set automatically as Sources)

hint: exclude there any folders you don't want IDEA to index, like "logs" or "data" - if this folders are quite big you'll get significant improve in IDEA project indexing speed

2

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