facet
Getting “Project facet Java version 1.8 is not supported.” in Eclipse Luna
I solved the problem. Go to Project Properties -> Project Facets -> Runtime -> New -> Add a tomcat server and in JRE select JRE1.8.0_XX. Did the work for me
No Android facet found, issues compiling with Android Studio 0.2
Add an android facet to your module by following below steps. 1) Go To File Menu -> Project Structure, or press (Ctrl+Alt+Shift+S) shortcut to open “Project Structure”. 2) Select “Facets” which is under the “Project Settings” tab. (First column) 3) Click on “+” button which is at the top of the Second Column to add … Read more
Project facet Java version 1.7 is not supported
You need to check what type of JRE is there installed in your IDE,