NoClassDefFoundError on an interface, not a class

Question

I have an issue with NoClassDefFoundError. I am using interfaces, and no class definition should be available:

package code;
public interface Co         


        

Answer 1

If you have somedirectory/code in your classpath, then that's wrong. You always need the base directory in your classpath (in this case it would be somedirectory). Java itself will search those roots for a directory called code containing a file called Constants.class.