[Reserved] Why jar package can see the source code

[Reserved] Why jar package can see the source code

This is what I discovered a phenomenon before, but not previously studied. Today, just know almost see, to sum up:

1. For Gradle or Maven project, depending on the part will automatically download the source code from a remote repository
2. Generating jar package configured in the source file, to automatically open the path to find the class source file
3. Decompile installed plug-ins