I got a little demo program with 2 .class
files. If I want to open it in IntelliJ, my main class cannot find the other .class
files. I already checked that all files are in the same folder.
If I compile it with the Windows shell, everything works fine. Only IntelliJ can't find the files.
It may be due to the fact that your FractalTerrain
file is not a .java file but it's a .class file.
You should move the .class files into target or make a .java file.