Bug 176429 - NPE in PackageExplorerContentProvider.getPackageFragmentRoots() due to null classpathEntry
Summary: NPE in PackageExplorerContentProvider.getPackageFragmentRoots() due to null c...
Status: RESOLVED DUPLICATE of bug 162104
Alias: None
Product: JDT
Classification: Eclipse Project
Component: Core (show other bugs)
Version: 3.3   Edit
Hardware: PC Windows XP
: P3 normal (vote)
Target Milestone: 3.3 RC4   Edit
Assignee: Frederic Fusier CLA
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Reported: 2007-03-05 17:45 EST by Nick Edgar CLA
Modified: 2007-06-21 05:47 EDT (History)
1 user (show)

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Description Nick Edgar CLA 2007-03-05 17:45:22 EST
3.3 M5

Found a few of these in the log.
It's on the second line of:
   IClasspathEntry classpathEntry= root.getRawClasspathEntry();
   int entryKind= classpathEntry.getEntryKind();


org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.NullPointerException)
	at org.eclipse.swt.SWT.error(SWT.java:3478)
	at org.eclipse.swt.SWT.error(SWT.java:3401)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:126)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3467)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3107)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2264)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2228)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2103)
	at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:457)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:452)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:101)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:146)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:169)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:615)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:476)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:416)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1124)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1099)
Caused by: java.lang.NullPointerException
	at org.eclipse.jdt.internal.ui.packageview.PackageExplorerContentProvider.getPackageFragmentRoots(PackageExplorerContentProvider.java:291)
	at org.eclipse.jdt.ui.StandardJavaElementContentProvider.getChildren(StandardJavaElementContentProvider.java:178)
	at org.eclipse.jdt.internal.ui.packageview.PackageExplorerContentProvider.getChildren(PackageExplorerContentProvider.java:270)
	at org.eclipse.jface.viewers.AbstractTreeViewer.getRawChildren(AbstractTreeViewer.java:1283)
	at org.eclipse.jface.viewers.TreeViewer.getRawChildren(TreeViewer.java:394)
	at org.eclipse.jdt.internal.ui.viewsupport.ProblemTreeViewer.getFilteredChildren(ProblemTreeViewer.java:205)
	at org.eclipse.jface.viewers.AbstractTreeViewer.getSortedChildren(AbstractTreeViewer.java:580)
	at org.eclipse.jface.viewers.AbstractTreeViewer.updateChildren(AbstractTreeViewer.java:2448)
	at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefreshStruct(AbstractTreeViewer.java:1788)
	at org.eclipse.jface.viewers.TreeViewer.internalRefreshStruct(TreeViewer.java:592)
	at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefreshStruct(AbstractTreeViewer.java:1795)
	at org.eclipse.jface.viewers.TreeViewer.internalRefreshStruct(TreeViewer.java:592)
	at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1763)
	at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1719)
	at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$PackageExplorerProblemTreeViewer.internalRefresh(PackageExplorerPart.java:260)
	at org.eclipse.jface.viewers.StructuredViewer$8.run(StructuredViewer.java:1424)
	at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1332)
	at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$PackageExplorerProblemTreeViewer.preservingSelection(PackageExplorerPart.java:356)
	at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1422)
	at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1379)
	at org.eclipse.jdt.internal.ui.viewsupport.FilterUpdater$1.run(FilterUpdater.java:51)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:123)
	... 23 more
Comment 1 Nick Edgar CLA 2007-03-05 17:46:50 EST
These appeared around the same time that I added a new Installed JRE and changed the default to the new one.
Comment 2 Martin Aeschlimann CLA 2007-03-07 13:23:31 EST
'null' isn't a valid return value according to the spec of IPackageFragmentRoot.getRawClasspathEntry().
A JME would be ok to be thrown when the classpath entry deosn't exist anymore.
Comment 3 Frederic Fusier CLA 2007-06-21 05:47:11 EDT

*** This bug has been marked as a duplicate of bug 162104 ***