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This article mainly explains "what are the common problems in IDEA". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what are the common problems in IDEA"?

1. Error: symbol code not found, but no error

Question:

IDEA suddenly hit, there is no problem with the code, but even if the compilation does not go through, Invalidate and Restart is also useless.

Solution:

Locate the output directory of compile under Modules and delete the directory in the project

Rebuild specifies the module of Moudle

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