Eclipse Java Missing required source folder: 'src'

Question

I imported a jar file into workspace and this is the error I get:

Description Resource Path Location Type
Project \'Interpreter1\'

Answer 1

In eclipse, you must be careful to create a "source folder" (File->New->Source Folder). This way, it's automatically on your classpath, and, more importantly, Eclipse knows that these are compilable files. It's picky that way.