Eclipse compilation error: The hierarchy of the type 'Class name' is inconsistent

Question

I have downloaded some open source software written in Java and tried to compile it using Eclipse. I got the error: \"The hierarchy of the type \'Class name\' is inc

Answer 1

I had this error after doing some git merge from a branch where my classes extended a new interface. It was enough to Refresh (F5) the File-Tree in the Package Explorer frame of Eclipse.

It seems that Eclipse did not update everything properly and so the classes were extending a non-existing-yet interface. After refresh, all errors disappeared.