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Steps to reproduce: Create a module with a layer which is missing the xml declaration (perhaps more specifically, the document encoding, and it will eventually get deleted. One way to trigger this is using the Important Files/XML Layer/<this layer in context> method of modifying the layer file - thought I also triggered it using the Update Center?? Desired outcome: Tell the user he/she is a knucklehead and/or assume UTF-8, but do not delete my layer... Workaround: use correct xml ;) Heres a relevant stack trace: org.netbeans.tax.TreeException: org.xml.sax.SAXParseException: Premature end of file. at org.netbeans.tax.io.XNIBuilder.buildDocument(XNIBuilder.java:180) at org.netbeans.modules.xml.tax.parser.XMLParsingSupport.parse(XMLParsingSupport.java:40) at org.netbeans.modules.apisupport.project.layers.LayerUtils$CookieImpl.openDocumentRoot(LayerUtils.java:287) [catch] at org.netbeans.modules.apisupport.project.layers.WritableXMLFileSystem.propertyChange(WritableXMLFileSystem.java:1415) at org.openide.util.WeakListenerImpl$PropertyChange.propertyChange(WeakListenerImpl.java:145) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:338) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:275) at org.netbeans.modules.apisupport.project.layers.LayerUtils$CookieImpl.changed(LayerUtils.java:383) at org.netbeans.modules.apisupport.project.layers.LayerUtils$CookieImpl.fileChanged(LayerUtils.java:358) at sun.reflect.GeneratedMethodAccessor34.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:589) at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:410) at $Proxy1.fileChanged(Unknown Source) at org.openide.filesystems.FCLSupport.dispatchEvent(FCLSupport.java:82) at org.openide.filesystems.FileObject$ED.dispatch(FileObject.java:811) at org.openide.filesystems.FileSystem$EventDispatcher.run(FileSystem.java:855) at org.openide.filesystems.EventControl.dispatchEvent(EventControl.java:53) at org.openide.filesystems.FileSystem.dispatchEvent(FileSystem.java:485) at org.openide.filesystems.FileObject.dispatchEvent(FileObject.java:441) at org.openide.filesystems.FileObject.fireFileChangedEvent(FileObject.java:409) at org.netbeans.modules.masterfs.MasterFileObject.access$800(MasterFileObject.java:38) at org.netbeans.modules.masterfs.MasterFileObject$FileChangeListenerImpl.fileChanged(MasterFileObject.java:913) at sun.reflect.GeneratedMethodAccessor34.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:589) at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:410) at $Proxy1.fileChanged(Unknown Source) at org.openide.filesystems.FCLSupport.dispatchEvent(FCLSupport.java:82) at org.openide.filesystems.FileObject$ED.dispatch(FileObject.java:811) at org.openide.filesystems.EventControl.invokeDispatchers(EventControl.java:179) at org.openide.filesystems.EventControl.exitAtomicAction(EventControl.java:153) at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:98) at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:450) at org.netbeans.modules.settings.convertors.SerialDataConvertor$SaveSupport.writeDown(SerialDataConvertor.java:779) at org.netbeans.modules.settings.convertors.SerialDataConvertor$SaveSupport.access$200(SerialDataConvertor.java:454) at org.netbeans.modules.settings.convertors.SerialDataConvertor.run(SerialDataConvertor.java:284) at org.netbeans.modules.settings.ScheduledRequest.performRequest(ScheduledRequest.java:168) at org.netbeans.modules.settings.ScheduledRequest.run(ScheduledRequest.java:142) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:471) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:904) Caused by: org.xml.sax.SAXParseException: Premature end of file. at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.netbeans.tax.io.XNIBuilder$XMLBuilder.parse(XNIBuilder.java:328) at org.netbeans.tax.io.XNIBuilder.buildDocument(XNIBuilder.java:154) ... 40 more *********** Exception occurred ************ at 4:11 PM on Jan 3, 2006 java.lang.NullPointerException: charsetName at java.io.OutputStreamWriter.<init>(OutputStreamWriter.java:81) at org.netbeans.tax.io.TreeStreamResult$TreeStreamWriter.writeDocument(TreeStreamResult.java:260) at org.netbeans.modules.apisupport.project.layers.LayerUtils$CookieImpl.save(LayerUtils.java:341) at org.netbeans.modules.apisupport.project.layers.LayerUtils$LayerHandle.save(LayerUtils.java:466) at org.netbeans.modules.apisupport.project.layers.LayerUtils$2.propertyChange(LayerUtils.java:447) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:338) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:275) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:317) at org.netbeans.modules.apisupport.project.layers.LayerUtils$CookieImpl.modified(LayerUtils.java:322) at org.netbeans.modules.apisupport.project.layers.LayerUtils$CookieImpl.access$000(LayerUtils.java:257) at org.netbeans.modules.apisupport.project.layers.LayerUtils$1.propertyChange(LayerUtils.java:303) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:338) at org.netbeans.tax.event.TreeEventChangeSupport.firePropertyChangeNow(TreeEventChangeSupport.java:168) at org.netbeans.tax.event.TreeEventManager.firePropertyChange(TreeEventManager.java:114) at org.netbeans.tax.event.TreeEventChangeSupport.firePropertyChange(TreeEventChangeSupport.java:162) at org.netbeans.tax.TreeObject.bubblePropertyChange(TreeObject.java:364) at org.netbeans.tax.TreeObject.firePropertyChange(TreeObject.java:298) at org.netbeans.tax.TreeObject.firePropertyChange(TreeObject.java:339) at org.netbeans.tax.TreeChild.setParentNode(TreeChild.java:113) at org.netbeans.tax.TreeParentNode$ChildListContentManager.objectInserted(TreeParentNode.java:331) at org.netbeans.tax.TreeObjectList.contentManagerObjectInserted(TreeObjectList.java:769) at org.netbeans.tax.TreeObjectList.add(TreeObjectList.java:637) at org.netbeans.tax.TreeParentNode.appendChild(TreeParentNode.java:204) at org.netbeans.modules.apisupport.project.layers.WritableXMLFileSystem.appendWithIndent(WritableXMLFileSystem.java:1084) at org.netbeans.modules.apisupport.project.layers.WritableXMLFileSystem.createFileOrFolder(WritableXMLFileSystem.java:412) at org.netbeans.modules.apisupport.project.layers.WritableXMLFileSystem.createData(WritableXMLFileSystem.java:425) at org.openide.filesystems.AbstractFileObject.createData(AbstractFileObject.java:425) at org.openide.filesystems.FileUtil.copyFileImpl(FileUtil.java:128) at org.openide.filesystems.FileObject.copy(FileObject.java:91) at org.openide.filesystems.AbstractFileObject.copy(AbstractFileObject.java:595) at org.openide.filesystems.MultiFileObject.writable(MultiFileObject.java:281) at org.openide.filesystems.MultiFileObject.getOutputStream(MultiFileObject.java:536) at org.openide.filesystems.MultiFileObject.getOutputStream(MultiFileObject.java:540) at org.netbeans.modules.settings.convertors.SerialDataConvertor$SaveSupport.try2run(SerialDataConvertor.java:737) at org.netbeans.modules.settings.convertors.SerialDataConvertor$SaveSupport.run(SerialDataConvertor.java:715) at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:96) at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:450) at org.netbeans.modules.settings.convertors.SerialDataConvertor$SaveSupport.writeDown(SerialDataConvertor.java:779) at org.netbeans.modules.settings.convertors.SerialDataConvertor$SaveSupport.access$200(SerialDataConvertor.java:454) at org.netbeans.modules.settings.convertors.SerialDataConvertor.run(SerialDataConvertor.java:284) at org.netbeans.modules.settings.ScheduledRequest.performRequest(ScheduledRequest.java:168) at org.netbeans.modules.settings.ScheduledRequest.run(ScheduledRequest.java:142) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:471) [catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:904)
*** This issue has been marked as a duplicate of 68982 ***
you are using probably old build, this should be fixed now in 5.0. Verified duplicate.
Created attachment 42103 [details] Java.lang.NullPointerException