I've encountered a bit of this with most AOT-compiled stuff except for Go. Make or compiler-flags also requires a bit of learning to get going.
Most dynamic languages tend to be more straight-forward with this.
That's kind of our way to do virtualenv-like functionality, which is mandatory rather than optional. (Or you can specify the classpath manually in the same way you would for the pythonpath, but no-one wants to do that). IMO that's the right thing - having libraries installed in my system python has only ever caused trouble in the long- or even medium-term, even if it makes "hello world" use of libraries very slightly simpler.
There's probably a way to get a shell with the classpath set up correctly, but I always found that kind of modalness more confusing than helpful.
> I've encountered a bit of this with most AOT-compiled stuff except for Go. Make or compiler-flags also requires a bit of learning to get going.
In my experience it does all work without any flags or extra knowledge. "mvn" is the entry point for all the things you want to do - you don't ever have to know that there's a "java" and "javac" underlying it.