The resource is not on the build path of a java project?

Question

I have a Maven project on my Eclipse. When I perform call hierarchy I get the message:

The resource is not on the build path of a java project.

What needs to be configured for this?

Answer 1

I followed the following steps it worked:

1. Properties->project facets->check java->ok
2. convert to maven project.

Answer 2

I have this quite often. Seems bug in Eclipse. Quit/restart Eclipse seems the easiest to get things working again.

Answer 3

Assuming you're expecting a call hierarchy in your own code, ensure that all sources are located in the src/main/java directory.

Have you installed the Eclipse m2e plugin? Does your Eclipse recognize the project as a Maven project? (right click > maven > convert to maven project)