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

Check your errors (tab "markers"). I had also the following error:

Archive for required library in project cannot be read...

and when that was fixed the "inconsistent-error" disappeared.

Actually I had added jars to the build path, but for some reason they could not be read with error

Archive for required library in project cannot be read or is not a valid ZIP file

So instead I added them as "External Jars". That helped and all compilation problems were no more!