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

One of the build path issue is it cannot find the correct /src/conf source folder. Right click on each project, Build Path > Configure Build Path. Under the Source tab, remove the folder with a red cross icon on the bottom right. It will work for the situation that there is a small red exclamation mark “!“ bedore your project name!