I have one question about this bug that is bothering me.
I am testing some function in JUnit tests and i created function that test some random vector operations like +, -, * etc...
However when I want run test, I get this error that I dont know how to fix.
Please, if you could help me what to do. It says:

The <classpath> for <junit> must include junit.jar if not in Ant's own classpath
BUILD FAILED (total time: 0 seconds)

What can I do, I need this pretty fast so I can finish my assignment for school.
Thank you very much.