java.lang.NullPointerException

Help
Dan
2012-10-04
2013-02-26
  • Dan
    Dan
    2012-10-04

    I am constantly plagued with this error message.

    Sometimes I can get lucky and close it and reboot and then RSSOwl will work again for a little bit before the error returns. I am shocked I don't see a post on this as the message has affected me for years.

    I have experienced this on Windows XP, Vista and now Windows 7 32 bit and Windows 7 64 bit.

    How do I resolve this?

     
  • Dan
    Dan
    2012-10-09

    If you are also having this problem please reply so people will know the magnitude of this problem. Once again it is completely unusable for me.

     
  • Dan
    Dan
    2012-10-09

    //Correction - it worked for a few minutes now I get the same error.
    If I set the app to run in Windows 95 comparability it started worked again at least for the time being.

     
    Last edit: Dan 2012-10-09
  • genodeftest
    genodeftest
    2012-10-13

    Hi
    I don't have this error. Can you please export a log file (see http://www.rssowl.org/help#item_5 for how to do that) and post it here, upload it to something like pastebin or send me via PM.

     
  • Dan
    Dan
    2012-10-17

    Here is the log file.

    Thanks

     
    Attachments
  • genodeftest
    genodeftest
    2012-10-17

    Hi
    1. Try running the cleanup wizard
    2. if that does not help, try starting RSSOwl with [code]-vmargs -Drssowl.reindex=true -Xmx1024m[/code] parameters from command line

     

    Related

    Code: code

    • Dan
      Dan
      2012-10-22

      Cleanup wizard does not help.

      I tried your startup paramaters maybe that's the answer time will tell but so far it's OK today.

      Thanks

       
  • Dan
    Dan
    2012-10-22

    I spoke to soon. That does not help at all either.

     
  • genodeftest
    genodeftest
    2012-10-23

    The command should have been:
    [code]-vmargs -Drssowl.reindex=true -Xmx1024m[/code]

     

    Related

    Code: code

  • genodeftest
    genodeftest
    2012-10-23

    does not seem to work either.

    Sorry, I don't know how to help you with that problem.

     
  • sourcer
    sourcer
    2012-11-01

    java.lang.NullPointerException
    at java.util.ArrayList.<init>(ArrayList.java:162)
    at org.rssowl.core.internal.persist.Folder.getChildren(Folder.java:148)
    at org.rssowl.ui.internal.views.explorer.BookMarkContentProvider.getElements(BookMarkContentProvider.java:107)
    at org.eclipse.jface.viewers.StructuredViewer.getRawChildren(StructuredViewer.java:937)
    at org.eclipse.jface.viewers.ColumnViewer.getRawChildren(ColumnViewer.java:703)
    at org.eclipse.jface.viewers.AbstractTreeViewer.getRawChildren(AbstractTreeViewer.java:1330)
    at org.eclipse.jface.viewers.TreeViewer.getRawChildren(TreeViewer.java:385)
    at org.eclipse.jface.viewers.AbstractTreeViewer.getFilteredChildren(AbstractTreeViewer.java:636)
    at org.eclipse.jface.viewers.AbstractTreeViewer.getSortedChildren(AbstractTreeViewer.java:602)
    at org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractTreeViewer.java:799)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:776)
    at org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:634)
    at org.rssowl.ui.internal.views.explorer.BookMarkViewer.createChildren(BookMarkViewer.java:73)
    at org.eclipse.jface.viewers.AbstractTreeViewer.internalInitializeTree(AbstractTreeViewer.java:1490)
    at org.eclipse.jface.viewers.TreeViewer.internalInitializeTree(TreeViewer.java:823)
    at org.eclipse.jface.viewers.AbstractTreeViewer$5.run(AbstractTreeViewer.java:1474)
    at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1365)
    at org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:397)
    at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1328)
    at org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer.java:1467)
    at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:274)
    at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1603)
    at org.rssowl.ui.internal.views.explorer.BookMarkExplorer.createViewer(BookMarkExplorer.java:338)
    at org.rssowl.ui.internal.views.explorer.BookMarkExplorer.createPartControl(BookMarkExplorer.java:256)
    at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:371)
    at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:230)
    at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:594)
    at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:306)
    at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:531)
    at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180)
    at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270)
    at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
    at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473)
    at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1256)
    at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1209)
    at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1608)
    at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:649)
    at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:576)
    at org.eclipse.ui.internal.PartSashContainer.createControl(PartSashContainer.java:568)
    at org.eclipse.ui.internal.PerspectiveHelper.activate(PerspectiveHelper.java:271)
    at org.eclipse.ui.internal.Perspective.onActivate(Perspective.java:968)
    at org.eclipse.ui.internal.WorkbenchPage.onActivate(WorkbenchPage.java:2593)
    at org.eclipse.ui.internal.WorkbenchWindow$25.run(WorkbenchWindow.java:2873)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchWindow.setActivePage(WorkbenchWindow.java:2854)
    at org.eclipse.ui.internal.WorkbenchWindow.busyOpenPage(WorkbenchWindow.java:759)
    at org.eclipse.ui.internal.Workbench$21.runWithException(Workbench.java:1029)
    at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3563)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3212)
    at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
    at org.eclipse.ui.internal.Workbench$27.runWithException(Workbench.java:1363)
    at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3563)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3212)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2295)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2200)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:495)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:490)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.rssowl.ui.internal.Application.start(Application.java:119)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
    at 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:386)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:88)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
    at java.lang.reflect.Method.invoke(Method.java:613)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

    Using version214,gnu/linux

     
  • Evan
    Evan
    2012-11-05

    I am having the same problem on Windows XP and Windows 7 64-bit.

    When I open RSSOwl 2.14 on XP SP3, I receive an error that "Could not create the view: An unexpected exception was thrown" in the Feeds window pane. When I display the "Details", I see:

    java.lang.NullPointerException
    at java.util.ArrayList.<init>(ArrayList.java:162)
    at org.rssowl.core.internal.persist.Folder.getChildren(Folder.java:148)
    at org.rssowl.ui.internal.views.explorer.BookMarkContentProvider.getElements(BookMarkContentProvider.java:107)
    at org.eclipse.jface.viewers.StructuredViewer.getRawChildren(Unknown Source)
    at org.eclipse.jface.viewers.ColumnViewer.getRawChildren(Unknown Source)
    at org.eclipse.jface.viewers.AbstractTreeViewer.getRawChildren(Unknown Source)
    at org.eclipse.jface.viewers.TreeViewer.getRawChildren(Unknown Source)
    at org.eclipse.jface.viewers.AbstractTreeViewer.getFilteredChildren(Unknown Source)
    at org.eclipse.jface.viewers.AbstractTreeViewer.getSortedChildren(Unknown Source)
    at org.eclipse.jface.viewers.AbstractTreeViewer$1.run(Unknown Source)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(Unknown Source)
    at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(Unknown Source)
    at org.eclipse.jface.viewers.TreeViewer.createChildren(Unknown Source)
    at org.rssowl.ui.internal.views.explorer.BookMarkViewer.createChildren(BookMarkViewer.java:73)
    at org.eclipse.jface.viewers.AbstractTreeViewer.internalInitializeTree(Unknown Source)
    at org.eclipse.jface.viewers.TreeViewer.internalInitializeTree(Unknown Source)
    at org.eclipse.jface.viewers.AbstractTreeViewer$5.run(Unknown Source)
    at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(Unknown Source)
    at org.eclipse.jface.viewers.TreeViewer.preservingSelection(Unknown Source)
    at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(Unknown Source)
    at org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(Unknown Source)
    at org.eclipse.jface.viewers.ContentViewer.setInput(Unknown Source)
    at org.eclipse.jface.viewers.StructuredViewer.setInput(Unknown Source)
    at org.rssowl.ui.internal.views.explorer.BookMarkExplorer.createViewer(BookMarkExplorer.java:338)
    at org.rssowl.ui.internal.views.explorer.BookMarkExplorer.createPartControl(BookMarkExplorer.java:256)
    at org.eclipse.ui.internal.ViewReference.createPartHelper(Unknown Source)
    at org.eclipse.ui.internal.ViewReference.createPart(Unknown Source)
    at org.eclipse.ui.internal.WorkbenchPartReference.getPart(Unknown Source)
    at org.eclipse.ui.internal.WorkbenchPage$ActivationList.setActive(Unknown Source)
    at org.eclipse.ui.internal.WorkbenchPage$17.runWithException(Unknown Source)
    at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(Unknown Source)
    at org.eclipse.swt.widgets.RunnableLock.run(Unknown Source)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Unknown Source)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Unknown Source)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
    at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Unknown Source)
    at org.eclipse.ui.internal.Workbench$27.runWithException(Unknown Source)
    at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(Unknown Source)
    at org.eclipse.swt.widgets.RunnableLock.run(Unknown Source)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Unknown Source)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Unknown Source)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
    at org.eclipse.ui.internal.Workbench.runUI(Unknown Source)
    at org.eclipse.ui.internal.Workbench.access$4(Unknown Source)
    at org.eclipse.ui.internal.Workbench$5.run(Unknown Source)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Unknown Source)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Unknown Source)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(Unknown Source)
    at org.rssowl.ui.internal.Application.start(Application.java:119)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(Unknown Source)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(Unknown Source)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(Unknown Source)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(Unknown Source)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:88)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
    at java.lang.reflect.Method.invoke(Method.java:613)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Unknown Source)
    at org.eclipse.equinox.launcher.Main.basicRun(Unknown Source)
    at org.eclipse.equinox.launcher.Main.run(Unknown Source)
    at org.eclipse.equinox.launcher.Main.main(Unknown Source)

    I am also using Lotus Notes 8.5.3, which also uses Eclipse. Perhaps the two are bumping heads?

    Any help would be appreciated.

    Regards.

     
  • genodeftest
    genodeftest
    2012-11-23

    @Sourcer: did you try http://www.rssowl.org/help#item_6 ?

     
    • Dan
      Dan
      2013-02-26

      Yes of course I tried that and stated that early in the message. The product is great but it just stops working. I miss it and had to switch to NewsBlur instead. I really miss the custom filters in RSS Owl. I wish they would just fix this already. It has been happening for years on various Windows OS.