Eclipse Warning: Unknown Faceted Project

java eclipse warnings eclipse-juno facet
jilt3d picture jilt3d · Dec 11, 2012 · Viewed 23.8k times · Source

I have a parent Maven project (using java facet version 1.7) which includes some modules. I got the following warning from Eclipse Juno SR1:

Implementation of project facet java could not be found.
Functionality will be limited (Unknown Faceted Project Problem)

How can I get rid of this error? Quick fix didn't found anything. Interestingly, I do not have Project Facet entry in the Project properties dialog.

Answer

Rodrigo Leitão picture Rodrigo Leitão · Nov 18, 2014

This occurs when you upgrade your IDE or open a project from older IDE into a new one.

To solve (remove the unsupported facet):

  1. open your project folder;
  2. goto to .settings sub-folder
  3. edit the org.eclipse.wst.common.project.facet.core.xml file
  4. remove the installed facet that refers to your error
  5. if it doesn't solve immediately (if you edit the file right in Eclipse), try to close and reopen project or restart eclipse.

After all done, you may, if not done yet, mark the correct facet to your project to work.

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