Question of obfuscated jar.

I have a jar and it's obfuscated. The class name and package name is the same after obfuscating.
For example, there's a class named xxx.a. And there's a package named xxx.a as well. And there's a class named xxx.a.a in it.
Then I can't import xxx.a.a. I want to use this class.
Is there a tool to modify the package name or class name?

You can use JMOT.

https://github.com/contra/JMOT