Some background: I'm getting the dreaded "Java compiler level does not match the version of the installed Java project facet" error in my eclipse project. I'm using Eclipse Helios on OS X Snow Leopard.
I'm having trouble editing the java facet settings for eclipse and maven. I've searched around and everywhere says to go to Project Properties -> Project Facet and edit the version there. However for my instance of Eclipse, these settings are not available through the UI.
How do I edit the java facet version manually?