java.util.ConcurrentModificationException: This exception has no message.

Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via netbeans.org by Unknown author, 9 months ago
via Liferay Issues by Jonathan McCann, 5 months ago
This exception has no message.
via GitHub by artisticmathematician
, 8 months ago
This exception has no message.
java.util.ConcurrentModificationException:
at java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:711)
at org.netbeans.modules.javascript2.editor.model.impl.ModelVisitor6.createVarLetConst(ModelVisitor6.java:880)
at org.netbeans.modules.javascript2.editor.model.impl.ModelVisitor6.visitLexicalBinding(ModelVisitor6.java:431)
at org.netbeans.modules.javascript2.editor.model.impl.ModelVisitor6.visitLexicalBinding(ModelVisitor6.java:73)
at org.netbeans.modules.javascript2.editor.parser6.ECMAScript6Parser$LexicalBindingContext.accept(ECMAScript6Parser.java:4753)
at org.netbeans.modules.javascript2.editor.model.impl.ModelVisitor6.visitLexicalDeclaration(ModelVisitor6.java:442)
at org.netbeans.modules.javascript2.editor.model.impl.ModelVisitor6.visitLexicalDeclaration(ModelVisitor6.java:73)
at org.netbeans.modules.javascript2.editor.parser6.ECMAScript6Parser$LexicalDeclarationContext.accept(ECMAScript6Parser.java:4580)
at org.netbeans.modules.javascript2.editor.parser6.ECMAScript6BaseVisitor.visitDeclaration(ECMAScript6BaseVisitor.java:401)
at org.netbeans.modules.javascript2.editor.parser6.ECMAScript6Parser$DeclarationContext.accept(ECMAScript6Parser.java:4265)
at org.netbeans.modules.javascript2.editor.parser6.ECMAScript6BaseVisitor.visitStatementList(ECMAScript6BaseVisitor.java:429)
at org.netbeans.modules.javascript2.editor.parser6.ECMAScript6Parser$StatementListContext.accept(ECMAScript6Parser.java:4500)
at org.netbeans.modules.javascript2.editor.parser6.ECMAScript6BaseVisitor.visitProgramItem(ECMAScript6BaseVisitor.java:947)
at org.netbeans.modules.javascript2.editor.parser6.ECMAScript6Parser$ProgramItemContext.accept(ECMAScript6Parser.java:9261)
at org.netbeans.modules.javascript2.editor.parser6.ECMAScript6BaseVisitor.visitProgram(ECMAScript6BaseVisitor.java:940)
at org.netbeans.modules.javascript2.editor.parser6.ECMAScript6Parser$ProgramContext.accept(ECMAScript6Parser.java:9196)
at org.netbeans.modules.javascript2.editor.model.Model.getModelVisitor(Model.java:182)
at org.netbeans.modules.javascript2.editor.model.Model.getGlobalObject(Model.java:506)
at org.netbeans.modules.javascript2.editor.index.JsIndexer.index(JsIndexer.java:105)
at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor$3.run(Indexable.java:248)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runIndexer(RepositoryUpdater.java:296)
at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor.index(Indexable.java:246)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$2.run(RepositoryUpdater.java:3210)
at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:609)
at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:153)
at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:137)
at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:204)
at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201)
at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141)
at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:88)
at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:201)
at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:104)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.indexEmbedding(RepositoryUpdater.java:3144)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doIndex(RepositoryUpdater.java:2865)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.access$500(RepositoryUpdater.java:2157)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$1.run(RepositoryUpdater.java:2639)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$1.run(RepositoryUpdater.java:2637)
at org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.refreshTransaction(TaskCache.java:565)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.index(RepositoryUpdater.java:2637)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork$4.call(RepositoryUpdater.java:5705)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork$4.call(RepositoryUpdater.java:5613)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$4.run(RepositoryUpdater.java:2130)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runInContext(RepositoryUpdater.java:2126)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runInContext(RepositoryUpdater.java:2107)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.access$1200(RepositoryUpdater.java:157)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanSource(RepositoryUpdater.java:5740)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanSources(RepositoryUpdater.java:5410)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsWork.getDone(RepositoryUpdater.java:5028)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doTheWork(RepositoryUpdater.java:3410)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task._run(RepositoryUpdater.java:6174)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.access$4300(RepositoryUpdater.java:5825)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2$1.run(RepositoryUpdater.java:6090)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304)
at org.netbeans.modules.parsing.impl.RunWhenScanFinishedSupport.performScan(RunWhenScanFinishedSupport.java:106)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2.call(RepositoryUpdater.java:6086)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2.call(RepositoryUpdater.java:6082)
at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141)
at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:88)
at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.run(RepositoryUpdater.java:6082)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)

Users with the same issue

Once, 1 month ago
Once, 4 months ago
Samebug visitor profile picture
Unknown user
Once, 6 months ago
2 times, 9 months ago
Samebug visitor profile picture
Unknown user
Once, 2 years ago
1 more bugmates

Know the solutions? Share your knowledge to help other developers to debug faster.