Java compiler level does not match the version of

After modifying the compilation level, the following error message appears:

Description ResourcePath LocationType

Java compiler level does not match the version of the installed Java project facet. SSJ unknownfaceted Project problem (Java Version mismatch)

Just select the project facet in the properties of the item and then modify the Java version:

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Why doesn ' t my Java compiler level match my installed project facet?

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I made a simple Java Google appengine application called Guestbook in Eclipse 3.7 and am trying to run it. However, I am encountering an error that lacks a quick fix: Description Resource Path Location Type Javacompiler level does not match the version of the installedJavaProject Facets. Guestbook Unknown Faceted Project problem (Java Version mismatch) I tried navigating to Project | Properties To change my project facet. However, I could not find a setting this dealt with "facet." What does "installed Java project facets" mean, and how does I fix this? Java Eclipse google-app-engine tr> share | Improve this question Edited jul 8 ' at 23:03 asked  Jul 8 ' at 22:48 David faux  5,07743993

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You can see your facets via right click on your project->properties->project facets, Here's can see my facets for a example Web application: I think your Java facet does not match with the installed one. I ' m suspicious that facet are at version 1.5. Please check it. Add-on:open The Navigator view, expand the. Settings folder, Open the file org.eclipse.wst.common.project.facet.core.xml a nd manually set the Java version to 1.6. Share | Improve this answer Edited at 12:00pm answered Jul 8 ' at 23:05 Gokceng 1,042723

/tr> &N Bsp   thank you, but I don ' t see project Facets anywhere under Project Properties:i.imgur.com/9lqsf.png i am using Eclipse 3.7 on Mac Lion. Why might this is?  –  David faux  Jul 8 ' at 23:09   /tr> &N Bsp   i ' ve quickly looked for similar problems and I ' ve found some pages about it. You can check them:1, 2, 3  –   gokceng  Jul 8 ' at 23:15   8 did you read the 3rd one?  Open the Navigator view, expand the. Settings folder, open the file org.eclipse.wst.com Mon.project.facet.core.xml and manually set the Java version to 1.6.  –   gokceng  Jul 8 ' at 23:20 1 there has been a couple reports of this problem from people using Google App Engine tooling. It appears that they is installing faceted Project Framework without its corresponding UI, leaving users in the bind. Issue to Google. In the meantime, Gokceng ' s advice of editing the specified configuration manually should unblock.  –   Konstantin komissarchik  Jul 8 ' at 23:29 3 thank you! Solution Number 3 did it. So, here's the fix I did again. 1) Switch to the Navigator perspective (Window > Show perspective > Navigator). 2) Open "Org.eclipse.wst.common.project.facet.core.xml" under ". Settings". 3) Changed my project facet from 1.4 to 1.6. This problem occupied me for the past 2 hours. Thanks a lot! I hope this thread helps others who encounter the same error. How does one report issues to Google by the the?  –   David faux  Jul 8 ' at 23:31

Java compiler level does not match the version of