Unknown Faceted Project Problem in ecipse

When I imported an existing Eclipse WTP project, I encountered the following error:

Java compiler level does not match the version of the installed Java project facet.  Unknown Faceted Project Problem (Java Version Mismatch)

Found the solution here , which basically states that there is a separate Java version for project facets that must match the Java compiler compliance level for the project.  To fix this, perform the following steps

1. Right click the offending project and go to properties.
2. Select Project Facets.
3. Make sure that the Java version matches that of your compiler setting for the project, or for the workspace if the project inherits the workspace settings.