An internal error occurred during validating java lang nullpointerexception

I use Eclipse Kepler. An internal error occurred during: " Updating Maven Project". NullPointerException. Could you help me? enter image description here. The null pointer exception does make it sound more like it' s an actual bug, however. What you could do is open menu Window, choose Preferences and select the Validation page. Check what' s enabled there and disable. Abstract: Attempts to build your imported Web Archive ( WAR) file might result in the follow error: ' Errors occurred during the build. Errors running builder ' JavaScript Validator' on project ' MyProject'.

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    Occurred error during

    NullPointerException' Problem:. BugAn internal error occurred during: " Building workspace". NullPointerException at org. createAndRunWorkbench( PlatformUI. java: 149) at org. clean building my project from the eclipse menu ( eclipse kepler) I have this error: Errors occurred during the build. Errors running builder ' Validation' on project ' XXXX'. I already sought for a solution with no. After experiencing this problem on our team I thought I would post the solution we found. This occurred when we moved from a Luna based IDE to the Mars SR1 release. We tracked it down to a file that was in source control. I had this exact same issue in Eclipse Luna. I had tried lots of solutions, but nothing worked. I can see in the stack trace that the problem is with JavaScript Development Tools ( JSDT), which was the same issue I had even though my project. The issue happens while cleaning the projects.

    Looking at the logs, it looks like a cycling dependency: java. StackOverflowError at org. getPackageFragment( SourceType. I solved mine by deleting the. settings folder and. project file in the project and then reimporting the project. Open Eclipse and provide the same workspace folder again during launch. Error " An internal error occurred during: " Initializing Java Tooling". NullPointerException" is gone and Eclipse just working good.