IntelliJ IDEA + Maven: how to move an external dependency into a project?

Question

Java

The point is this. There is a project written in Java. Used by Maven. It has an external dependency for which the project is essentially a wrapper. As a result, the project itself lives in its own folder, and the external dependency is placed in the "C:\Users\Stas\.m2\" folder as a compiled jar. There was a need to edit the code of this dependency, and at least see its code as a result within the project in IntelliJ IDEA.
What is the most correct way to do this?

Answer 1

Seeing the code is no problem. The Project window contains the External Libraries group. Search your library and see. With "rule" is more difficult. Open source library? If so, download the repository with it and edit. Then compile and use. If not, you need a decompiler to *.java. Then edit again, compile and use