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Bug 215626 - ClassCastException: javax.swing.text.PlainDocument cannot be cast to javax.swing.text.StyledDocument
Summary: ClassCastException: javax.swing.text.PlainDocument cannot be cast to javax.sw...
Status: RESOLVED FIXED
Alias: None
Product: utilities
Classification: Unclassified
Component: Diff (show other bugs)
Version: 7.2
Hardware: All All
: P3 normal (vote)
Assignee: Ondrej Vrabec
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-07-17 12:38 UTC by sebglon
Modified: 2019-04-02 09:08 UTC (History)
1 user (show)

See Also:
Issue Type: DEFECT
Exception Reporter: 42217

Attachments
stacktrace (6.05 KB, text/plain)
2012-07-17 12:38 UTC, sebglon 		Details
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Description sebglon 2012-07-17 12:38:45 UTC 
Build: NetBeans IDE 7.2 Beta (Build 201205031832)
VM: Java HotSpot(TM) Client VM, 22.0-b10, Java(TM) SE Runtime Environment, 1.7.0_02-b13
OS: Windows 7

User Comments:
GUEST: ??????????????????????Subvertion > ?? ??????

GUEST: I have tried to compare a local file and a file from svn repository.
SVN client: CollabNet Subversion Client.
SVN properties: svn:mime-type   text/plain;charset=windows-1251

GUEST: View diff from subversion




Stacktrace: 
java.lang.ClassCastException: javax.swing.text.PlainDocument cannot be cast to javax.swing.text.StyledDocument
   at org.netbeans.modules.diff.builtin.visualizer.editable.LineNumbersActionsBar.updateStateOnDocumentChange(LineNumbersActionsBar.java:258)
   at org.netbeans.modules.diff.builtin.visualizer.editable.LineNumbersActionsBar.onDiffSetChanged(LineNumbersActionsBar.java:319)
   at org.netbeans.modules.diff.builtin.visualizer.editable.DiffContentPanel.setCurrentDiff(DiffContentPanel.java:171)
   at org.netbeans.modules.diff.builtin.visualizer.editable.EditableDiffView$RefreshDiffTask$1.run(EditableDiffView.java:1369)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)
Comment 1 sebglon 2012-07-17 12:38:49 UTC 
Created attachment 122099 [details]
stacktrace
Comment 2 Ondrej Vrabec 2012-11-23 13:24:55 UTC 
Probably caused by this exception:
> SEVERE [org.netbeans.modules.diff.builtin.visualizer.editable.EditableDiffView]: .colorLines:java.awt.Color[r=64,g=64,b=64], .jviewPort2:null, editableDocument:null, editableCookie:null, editorUndoRedo:null
> java.lang.IllegalArgumentException: mimeType 'text' does not contain '/'.
> 	at org.netbeans.api.editor.mimelookup.MimePath.parse(MimePath.java:236)
> 	at org.openide.text.CloneableEditorSupport.getEditorKit(CloneableEditorSupport.java:1909)
> 	at org.netbeans.modules.diff.builtin.visualizer.editable.EditableDiffView$1.run(EditableDiffView.java:266)
preceeding the reported exception
Comment 3 Ondrej Vrabec 2012-11-23 13:52:03 UTC 
other reports are similar:
> java.lang.IllegalArgumentException: Invalid mimeType="text/plain;charset=windows-1251"
Comment 4 Ondrej Vrabec 2012-11-23 14:22:53 UTC 
fix: http://hg.netbeans.org/core-main/rev/aba8165dc56b
Comment 5 Quality Engineering 2012-11-24 13:10:20 UTC 
Integrated into 'main-golden', will be available in build *201211240959* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
Changeset: http://hg.netbeans.org/main-golden/rev/aba8165dc56b
User: Ondrej Vrabec <ovrabec@netbeans.org>
Log: #215626 - ClassCastException: javax.swing.text.PlainDocument cannot be cast to javax.swing.text.StyledDocument
normalizing the mime path before passing it to the diff view
Comment 6 maraar 2019-03-07 15:42:10 UTC 
I am still getting this issue in the newest NetBeans 10 Platform..

I am trying to build a "Diff Viewer" based on this blog (https://blogs.oracle.com/geertjan/getting-started-with-diff-viewer-from-scratch)

>System Info: 
  Product Version         = HzDiffViewer incubator-netbeans-release-380-on-20181217
  Operating System        = Windows 10 version 10.0 running on amd64
  Java; VM; Vendor        = 1.8.0_201; Java HotSpot(TM) 64-Bit Server VM 25.201-b09; Oracle Corporation
  Runtime                 = Java(TM) SE Runtime Environment 1.8.0_201-b09
  Java Home               = C:\Program Files\Java\jdk1.8.0_201\jre
  System Locale; Encoding = de_CH (hzdiffviewer); Cp1252
  Home Directory          = C:\Users\e514938
  Current Directory       = C:\Users\e514938\netbeansProjects\HzDiffViewer
  User Directory          = C:\Users\e514938\netbeansProjects\HzDiffViewer\build\testuserdir
  Cache Directory         = C:\Users\e514938\netbeansProjects\HzDiffViewer\build\testuserdir\var\cache
  Installation            = C:\Users\e514938\netbeansProjects\HzDiffViewer\build\cluster
                            C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\ide
                            C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform
                            C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform
  Boot & Ext. Classpath   = C:\Program Files\Java\jdk1.8.0_201\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\rt.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_201\jre\classes;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\zipfs.jar
  Application Classpath   = C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform\lib\boot.jar;C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform\lib\org-openide-modules.jar;C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform\lib\org-openide-util-lookup.jar;C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform\lib\org-openide-util-ui.jar;C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform\lib\org-openide-util.jar;C:\Program Files\Java\jdk1.8.0_201\lib\dt.jar;C:\Program Files\Java\jdk1.8.0_201\lib\tools.jar
  Startup Classpath       = C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform\core\asm-all-5.0.1.jar;C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform\core\core-base.jar;C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform\core\core.jar;C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform\core\org-netbeans-libs-asm.jar;C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform\core\org-openide-filesystems-compat8.jar;C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform\core\org-openide-filesystems.jar;C:\Users\e514938\netbeansProjects\HzDiffViewer\build\cluster\core\locale\core_hzdiffviewer.jar
-------------------------------------------------------------------------------
INFO [org.netbeans.core.startup.NbEvents]: Turning on modules:
	org.openide.util.lookup [8.36.1 incubator-netbeans-release-380-on-20181217]
	org.openide.util [9.10.1 incubator-netbeans-release-380-on-20181217]
	org.openide.util.ui [9.11.1 incubator-netbeans-release-380-on-20181217]
	org.openide.modules [7.51.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.api.annotations.common/1 [1.30.1 incubator-netbeans-release-380-on-20181217]
	org.openide.filesystems [9.13.1 incubator-netbeans-release-380-on-20181217]
	org.openide.awt [7.71.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.api.progress/1 [1.50.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.api.progress.nb [1.50.1 incubator-netbeans-release-380-on-20181217]
	org.openide.dialogs [7.45.1 incubator-netbeans-release-380-on-20181217]
	org.openide.nodes [7.48.1 incubator-netbeans-release-380-on-20181217]
	org.openide.windows [6.79.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.mimelookup/1 [1.43.1 incubator-netbeans-release-380-on-20181217]
	org.openide.text [6.70.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.swing.tabcontrol [1.59.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.swing.outline [1.37.1 incubator-netbeans-release-380-on-20181217]
	org.openide.explorer [6.65.1 incubator-netbeans-release-380-on-20181217]
	org.openide.actions [6.42.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.queries/1 [1.46.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.api.templates [1.11.1 incubator-netbeans-release-380-on-20181217]
	org.openide.filesystems.nb [9.13.1 incubator-netbeans-release-380-on-20181217]
	org.openide.loaders [7.70.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.api.intent [1.5.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.api.io [1.6.1 incubator-netbeans-release-380-on-20181217]
	org.openide.io [1.52.1 incubator-netbeans-release-380-on-20181217]
	org.openide.filesystems.compat8 [9.12.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.swing.plaf [1.44.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.spi.quicksearch [1.30.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.libs.asm [5.6.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.bootstrap/1 [2.81.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.core.startup.base [1.65.1.1 1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.core.startup/1 [1.65.1.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.settings/1 [1.52.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.sampler [1.17.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.projectapi/1 [1.70.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.projectapi.nb [1.6.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.progress.ui [1.36.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.print [7.29.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.keyring [1.27.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.core/2 [3.54.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.options.api/1 [1.48.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.options.keymap [1.40.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.util/1 [1.68.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.settings.lib [1.54.1.1 1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.settings/1 [1.60.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.lexer/2 [1.66.1.1 1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.fold/1 [1.48.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.document [1.12.1.3 3 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.lib2/1 [2.21.1.55.3 55 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.guards/1 [1.36.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.indent/2 [1.46.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.lib/3 [4.10.1.23.3.55 23 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.settings.storage/1 [1.54.1.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.fold.nbui [1.15.1.55 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor/3 [1.90.1.6.3.23.55 6 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.options.editor/1 [1.63.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.libs.jna/1 [1.50.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.masterfs/2 [2.58.1.2 2 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.masterfs.windows [1.19.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.masterfs.ui [2.6.1.2 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.masterfs.nio2 [1.18.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.keyring.fallback [1.11.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.keyring.impl [1.27.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.mimelookup.impl/1 [1.35.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.errorstripe.api/1 [2.35.1.1 1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.errorstripe/2 [2.37.1.1.1 1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.editor.actions/1 [1.34.1.55 incubator-netbeans-release-380-on-20181217]
	org.netbeans.modules.diff/1 [1.54.1.42.1 42 incubator-netbeans-release-380-on-20181217]
	org.netbeans.libs.osgi [1.24.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.libs.jna.platform/1 [1.18.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.libs.felix [2.18.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.core.windows/2 [2.85.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.core.ui/1 [1.48.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.core.output2/1 [1.45.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.core.network [1.14.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.core.netigso [1.34.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.core.nativeaccess/1 [1.34.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.core.multitabs/1 [1.15.1.1 1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.core.io.ui/1 [1.33.1 incubator-netbeans-release-380-on-20181217]
	org.netbeans.api.progress.compat8 [1.50.1 incubator-netbeans-release-380-on-20181217]
	ch.sbb.hzdiff [1.0 190307]
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network proxy resolver: Windows
INFO [org.netbeans.core.network.proxy.windows.WindowsNetworkProxy]: Windows system proxy resolver: auto - PAC (http://pac.zscloud.net/sbb.ch/proxy.pac)
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network proxy reloading succeeded.
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network proxy - mode: auto
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network proxy - pac url: http://pac.zscloud.net/sbb.ch/proxy.pac
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network proxy TEST - http host: 195.65.154.41
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network proxy TEST - http port: 10465
INFO [org.netbeans.ui.metrics.laf]: USG_LOOK_AND_FEEL
Diagnostic information
Input arguments:
	-Dnetbeans.logger.console=true
	-ea
	-Djdk.home=C:\Program Files\Java\jdk1.8.0_201
	-Dnetbeans.home=C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform
	-Dnetbeans.user=C:\Users\e514938\netbeansProjects\HzDiffViewer\build\testuserdir
	-Dnetbeans.default_userdir_root=
	-XX:+HeapDumpOnOutOfMemoryError
	-XX:HeapDumpPath=C:\Users\e514938\netbeansProjects\HzDiffViewer\build\testuserdir\var\log\heapdump.hprof
	-Dsun.awt.keepWorkingSetOnMinimize=true
	-Dnetbeans.dirs=C:\Users\e514938\netbeansProjects\HzDiffViewer\build\cluster;C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\ide;C:\Users\e514938\apps\incubating-netbeans-10.0-bin\netbeans\platform
	exit
Compiler: HotSpot 64-Bit Tiered Compilers
Heap memory usage: initial 510.0MB maximum 7239.5MB
Non heap memory usage: initial 2.4MB maximum -1b
Garbage collector: PS Scavenge (Collections=2 Total time spent=0s)
Garbage collector: PS MarkSweep (Collections=2 Total time spent=0s)
Classes: loaded=5941 total loaded=5941 unloaded 0
INFO [org.netbeans.core.ui.warmup.DiagnosticTask]: Total memory 34'156'453'888
INFO [null]: Total physical memory 34'156'453'888
WARNING [null]: org.openide.windows.TopComponent should override preferredID()
SEVERE [global]
java.lang.ClassCastException: javax.swing.text.PlainDocument cannot be cast to javax.swing.text.StyledDocument
	at org.netbeans.modules.diff.builtin.visualizer.editable.LineNumbersActionsBar.updateStateOnDocumentChange(LineNumbersActionsBar.java:234)
	at org.netbeans.modules.diff.builtin.visualizer.editable.LineNumbersActionsBar.initUI(LineNumbersActionsBar.java:152)
	at org.netbeans.modules.diff.builtin.visualizer.editable.LineNumbersActionsBar.addNotify(LineNumbersActionsBar.java:114)
	at java.awt.Container.addNotify(Container.java:2776)
	at javax.swing.JComponent.addNotify(JComponent.java:4740)
	at java.awt.Container.addNotify(Container.java:2776)
	at javax.swing.JComponent.addNotify(JComponent.java:4740)
	at java.awt.Container.addNotify(Container.java:2776)
	at javax.swing.JComponent.addNotify(JComponent.java:4740)
	at java.awt.Container.addNotify(Container.java:2776)
	at javax.swing.JComponent.addNotify(JComponent.java:4740)
	at java.awt.Container.addNotify(Container.java:2776)
	at javax.swing.JComponent.addNotify(JComponent.java:4740)
	at java.awt.Container.addNotify(Container.java:2776)
	at javax.swing.JComponent.addNotify(JComponent.java:4740)
	at org.netbeans.modules.diff.builtin.visualizer.editable.EditableDiffView$1.addNotify(EditableDiffView.java:199)
	at java.awt.Container.addNotify(Container.java:2776)
	at javax.swing.JComponent.addNotify(JComponent.java:4740)
	at org.openide.windows.TopComponent.addNotify(TopComponent.java:256)
	at java.awt.Container.addNotify(Container.java:2776)
	at javax.swing.JComponent.addNotify(JComponent.java:4740)
	at java.awt.Container.addNotify(Container.java:2776)
	at javax.swing.JComponent.addNotify(JComponent.java:4740)
	at org.netbeans.swing.tabcontrol.TabbedContainer.addNotify(TabbedContainer.java:942)
	at org.netbeans.core.windows.view.ui.tabcontrol.TabbedAdapter.addNotify(TabbedAdapter.java:305)
	at java.awt.Container.addNotify(Container.java:2776)
	at javax.swing.JComponent.addNotify(JComponent.java:4740)
	at java.awt.Container.addImpl(Container.java:1124)
	at java.awt.Container.add(Container.java:975)
	at org.netbeans.core.windows.view.EditorView$EditorAreaComponent.setAreaComponent(EditorView.java:279)
	at org.netbeans.core.windows.view.EditorView.assureComponentInEditorArea(EditorView.java:148)
	at org.netbeans.core.windows.view.EditorView.updateAWTHierarchy(EditorView.java:136)
	at org.netbeans.core.windows.view.ViewHierarchy.setSplitRootIntoDesktop(ViewHierarchy.java:645)
	at org.netbeans.core.windows.view.ViewHierarchy.updateDesktop(ViewHierarchy.java:682)
	at org.netbeans.core.windows.view.DefaultView.changeGUI(DefaultView.java:313)
	at org.netbeans.core.windows.ViewRequestor.dispatchRequest(ViewRequestor.java:250)
	at org.netbeans.core.windows.ViewRequestor.processRequest(ViewRequestor.java:226)
	at org.netbeans.core.windows.ViewRequestor.postRequest(ViewRequestor.java:164)
	at org.netbeans.core.windows.ViewRequestor.scheduleRequest(ViewRequestor.java:102)
	at org.netbeans.core.windows.Central.addModeOpenedTopComponent(Central.java:766)
	at org.netbeans.core.windows.ModeImpl.addOpenedTopComponent(ModeImpl.java:329)
	at org.netbeans.core.windows.WindowManagerImpl.topComponentOpenAtTabPosition(WindowManagerImpl.java:1245)
	at org.netbeans.core.windows.WindowManagerImpl.topComponentOpen(WindowManagerImpl.java:1202)
	at org.openide.windows.TopComponent.open(TopComponent.java:472)
	at org.openide.windows.TopComponent.open(TopComponent.java:452)
	at ch.sbb.hzdiff.DiffViewerAction$1.run(DiffViewerAction.java:51)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
	at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:136)
[catch] at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Comment 7 maraar 2019-04-02 09:08:00 UTC 
The Exception disappeared when I included the "Plain Editor" and "Plain Editor Library" into the project.