java.lang.NullPointerException when launching Eclipse

3
votes

I'm using Eclipse Juno and I get this error when I launch it on a certain workspace:

An error has occurred. See error log for more details.

java.lang.NullPointerException

Other workspaces that are checked out from the same SVN repository work well. Does anyone know why this might happen?

In the workspace log, I get the following exception:

!ENTRY org.eclipse.m2e.logback.appender 4 0 2014-03-11 13:26:25.798 !MESSAGE Could not add repository index

!ENTRY org.eclipse.ui.workbench 4 2 2014-03-11 13:26:37.470 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench". !STACK 0 java.lang.NullPointerException at org.tigris.subversion.subclipse.ui.history.SVNHistoryPage$2.getElements(SVNHistoryPage.java:631) at org.eclipse.jface.viewers.StructuredViewer.getRawChildren(StructuredViewer.java:1010) at org.eclipse.jface.viewers.ColumnViewer.getRawChildren(ColumnViewer.java:703) at org.eclipse.jface.viewers.AbstractTableViewer.getRawChildren(AbstractTableViewer.java:1087) at org.eclipse.jface.viewers.StructuredViewer.getFilteredChildren(StructuredViewer.java:917) at org.eclipse.jface.viewers.StructuredViewer.getSortedChildren(StructuredViewer.java:1067) at org.eclipse.jface.viewers.AbstractTableViewer.internalRefreshAll(AbstractTableViewer.java:701) at org.eclipse.jface.viewers.AbstractTableViewer.internalRefresh(AbstractTableViewer.java:649) at org.eclipse.jface.viewers.AbstractTableViewer.internalRefresh(AbstractTableViewer.java:636) at org.eclipse.jface.viewers.AbstractTableViewer$2.run(AbstractTableViewer.java:592) org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584) at org.eclipse.equinox.launcher.Main.run(Main.java:1438) at org.eclipse.equinox.launcher.Main.main(Main.java:1414)

3
javaeclipse
As the exception is thrown by Eclipse itself, that would indicate a bug in Eclipse or one of its plug-ins. Therefore all you can do is upgrade your Eclipse and its plug-ins. - Raedwald
Thanks. I'm updating it now, hopefully that will fix it. - Diana Amza
As I usually suggest in these situations -> create new empty workspace. The issue usually resides in workspace .metadata. - Pavel Horal
Good hint! I made a backup and removed everything in my .metadata folder, then launched eclipse and re-imported all my projects. Works now. - Diana Amza

3 Answers

5
votes

Solved: cleaned up my .metadata folder and re-imported projects in eclipse

0
votes

For me, the below steps works.

Right click on project > Select Run As > Run Configurations Click on Select Other link next to Using VisualVM Launcher Select Eclipse EDT launcher Click ok

0
votes

If you are installed Hiber object in your eclipse and when you are creating a new project as like vaadin 8 project then showing that notification. go to your eclipse market place search hiber object and expand the update/installed button then click uninstall and follow that instruction.