I am getting this error when running JUnit test in Eclipse:
Class not found com.myproject.server.MyTest
java.lang.ClassNotFoundException: com.myproject.serve
I had faced the same issue. I solved it by removing the external JUnit jar dependency which I added by download from the internet externally. But then I went to project->properties->build path->add library->junit->choosed the version(ex junit4)->apply.
It automatically added the dependency. it solved my issue.