java - NullPointerException in eclipse in Eclipse itself at PartServiceImpl.internalFixContext -


i have problem eclipse ide, can't open file in work space; if try open file, eclipse alert following error dialog 

"an error has occurred. see error log more details. java.lang.nullpointerexception"

i go see .log file in .meta @ workspace , see paragraph in file this:

!entry org.eclipse.jface 4 2 2557-04-09 11:40:49.422 !message problems occurred when invoking code plug-in: "org.eclipse.jface". !stack 0 java.lang.nullpointerexception     @ org.eclipse.e4.ui.internal.workbench.partserviceimpl.internalfixcontext(partserviceimpl.java:380)     @ org.eclipse.e4.ui.internal.workbench.partserviceimpl.bringtotop(partserviceimpl.java:341)     @ org.eclipse.e4.ui.internal.workbench.partserviceimpl.showpart(partserviceimpl.java:1029)     @ org.eclipse.ui.internal.workbenchpage.busyopeneditor(workbenchpage.java:3047)     @ org.eclipse.ui.internal.workbenchpage.access$22(workbenchpage.java:2969)     @ org.eclipse.ui.internal.workbenchpage$8.run(workbenchpage.java:2951)     @ org.eclipse.swt.custom.busyindicator.showwhile(busyindicator.java:70)     @ org.eclipse.ui.internal.workbenchpage.openeditor(workbenchpage.java:2947)     @ org.eclipse.ui.internal.workbenchpage.openeditor(workbenchpage.java:2911)     @ org.eclipse.ui.internal.workbenchpage.openeditor(workbenchpage.java:2902)     @ org.eclipse.ui.ide.ide.openeditor(ide.java:655)     @ org.eclipse.ui.ide.ide.openeditor(ide.java:614)     @ org.eclipse.jdt.internal.ui.javaeditor.editorutility.openineditor(editorutility.java:360)     @ org.eclipse.jdt.internal.ui.javaeditor.editorutility.openineditor(editorutility.java:167)     @ org.eclipse.jdt.ui.actions.openaction.run(openaction.java:249)     @ org.eclipse.jdt.ui.actions.openaction.run(openaction.java:228)     @ org.eclipse.jdt.ui.actions.selectiondispatchaction.dispatchrun(selectiondispatchaction.java:275)     @ org.eclipse.jdt.ui.actions.selectiondispatchaction.run(selectiondispatchaction.java:251)     @ org.eclipse.jdt.internal.ui.packageview.packageexploreractiongroup.handleopen(packageexploreractiongroup.java:376)     @ org.eclipse.jdt.internal.ui.packageview.packageexplorerpart$4.open(packageexplorerpart.java:538)     @ org.eclipse.ui.openandlinkwitheditorhelper$internallistener.open(openandlinkwitheditorhelper.java:48)     @ org.eclipse.jface.viewers.structuredviewer$2.run(structuredviewer.java:866)     @ org.eclipse.core.runtime.saferunner.run(saferunner.java:42)     @ org.eclipse.ui.internal.jfaceutil$1.run(jfaceutil.java:49)     @ org.eclipse.jface.util.saferunnable.run(saferunnable.java:175)     @ org.eclipse.jface.viewers.structuredviewer.fireopen(structuredviewer.java:864)     @ org.eclipse.jface.viewers.structuredviewer.handleopen(structuredviewer.java:1152)     @ org.eclipse.jface.viewers.structuredviewer$6.handleopen(structuredviewer.java:1256)     @ org.eclipse.jface.util.openstrategy.fireopenevent(openstrategy.java:275)     @ org.eclipse.jface.util.openstrategy.access$2(openstrategy.java:269)     @ org.eclipse.jface.util.openstrategy$1.handleevent(openstrategy.java:309)     @ org.eclipse.swt.widgets.eventtable.sendevent(eventtable.java:84)     @ org.eclipse.swt.widgets.widget.sendevent(widget.java:1053)     @ org.eclipse.swt.widgets.display.rundeferredevents(display.java:4169)     @ org.eclipse.swt.widgets.display.readanddispatch(display.java:3758)     @ org.eclipse.e4.ui.internal.workbench.swt.partrenderingengine$9.run(partrenderingengine.java:1053)     @ org.eclipse.core.databinding.observable.realm.runwithdefault(realm.java:332)     @ org.eclipse.e4.ui.internal.workbench.swt.partrenderingengine.run(partrenderingengine.java:942)     @ org.eclipse.e4.ui.internal.workbench.e4workbench.createandrunui(e4workbench.java:86)     @ org.eclipse.ui.internal.workbench$5.run(workbench.java:588)     @ org.eclipse.core.databinding.observable.realm.runwithdefault(realm.java:332)     @ org.eclipse.ui.internal.workbench.createandrunworkbench(workbench.java:543)     @ org.eclipse.ui.platformui.createandrunworkbench(platformui.java:149)     @ org.eclipse.ui.internal.ide.application.ideapplication.start(ideapplication.java:124)     @ org.eclipse.equinox.internal.app.eclipseapphandle.run(eclipseapphandle.java:196)     @ org.eclipse.core.runtime.internal.adaptor.eclipseapplauncher.runapplication(eclipseapplauncher.java:110)     @ org.eclipse.core.runtime.internal.adaptor.eclipseapplauncher.start(eclipseapplauncher.java:79)     @ org.eclipse.core.runtime.adaptor.eclipsestarter.run(eclipsestarter.java:353)     @ org.eclipse.core.runtime.adaptor.eclipsestarter.run(eclipsestarter.java:180)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(unknown source)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(unknown source)     @ java.lang.reflect.method.invoke(unknown source)     @ org.eclipse.equinox.launcher.main.invokeframework(main.java:629)     @ org.eclipse.equinox.launcher.main.basicrun(main.java:584)     @ org.eclipse.equinox.launcher.main.run(main.java:1438)     @ org.eclipse.equinox.launcher.main.main(main.java:1414)

how can solve problem - idea?

there bug filed eclipse:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=385680

you try restarting eclipse, helped original poster of issue there.


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