[ 
https://issues.apache.org/jira/browse/NETBEANS-3263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16956057#comment-16956057
 ] 

Geertjan Wielenga commented on NETBEANS-3263:
---------------------------------------------

I can reproduce and a similar bug is 
https://issues.apache.org/jira/browse/NETBEANS-3257.

My environment:

Product Version: Apache NetBeans IDE 11.2
Java: 12.0.1; Java HotSpot(TM) 64-Bit Server VM 12.0.1+12
Runtime: Java(TM) SE Runtime Environment 12.0.1+12
System: Mac OS X version 10.13.6 running on x86_64; UTF-8; en_NL (nb)

The error:

Annotation: An error occurred during parsing of 
'/Users/geertjanwielenga/Downloads/RefactorTest/src/main/java/com/test/refactortest/ClassTwo.java'.
 Please report a bug against java/source and attach dump file 
'/Users/geertjanwielenga/Library/Application 
Support/NetBeans/11.2-vc1/var/log/ClassTwo.dump'.
Annotation: An error occurred during parsing of 
'/Users/geertjanwielenga/Downloads/RefactorTest/src/main/java/com/test/refactortest/ClassTwo.java'.
 Please report a bug against java/source and attach dump file 
'/Users/geertjanwielenga/Library/Application 
Support/NetBeans/11.2-vc1/var/log/ClassTwo.dump'.
An error occurred during parsing of 
'/Users/geertjanwielenga/Downloads/RefactorTest/src/main/java/com/test/refactortest/ClassTwo.java'.
 Please report a bug against java/source and attach dump file 
'/Users/geertjanwielenga/Library/Application 
Support/NetBeans/11.2-vc1/var/log/ClassTwo.dump'.
An error occurred during parsing of 
'/Users/geertjanwielenga/Downloads/RefactorTest/src/main/java/com/test/refactortest/ClassTwo.java'.
 Please report a bug against java/source and attach dump file 
'/Users/geertjanwielenga/Library/Application 
Support/NetBeans/11.2-vc1/var/log/ClassTwo.dump'.
Caused: java.lang.AssertionError
        at com.sun.tools.javac.util.Assert.error(Assert.java:155)
        at com.sun.tools.javac.util.Assert.checkNonNull(Assert.java:62)
        at 
com.sun.tools.javac.comp.Modules.setCompilationUnitModules(Modules.java:559)
        at com.sun.tools.javac.comp.Modules.enter(Modules.java:287)
        at com.sun.tools.javac.comp.Modules.enter(Modules.java:268)
        at com.sun.tools.javac.comp.Modules.initModules(Modules.java:259)
        at 
com.sun.tools.javac.main.JavaCompiler.initModules(JavaCompiler.java:1126)
        at com.sun.tools.javac.api.JavacTaskImpl.enter(JavacTaskImpl.java:393)
        at com.sun.tools.javac.api.JavacTaskImpl.enter(JavacTaskImpl.java:327)
        at 
org.netbeans.modules.java.source.parsing.JavacParser.moveToPhase(JavacParser.java:660)
        at 
org.netbeans.modules.java.source.parsing.CompilationInfoImpl.toPhase(CompilationInfoImpl.java:361)
        at 
org.netbeans.api.java.source.CompilationController.toPhase(CompilationController.java:84)
        at 
org.netbeans.api.java.source.WorkingCopy.toPhase(WorkingCopy.java:193)
        at 
org.netbeans.modules.refactoring.java.spi.RefactoringVisitor.setWorkingCopy(RefactoringVisitor.java:110)
        at 
org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$TransformTask.run(JavaRefactoringPlugin.java:425)
        at 
org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$TransformTask.run(JavaRefactoringPlugin.java:408)
        at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:673)
        at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:663)
        at 
org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:502)
        at 
org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:586)
        at 
org.netbeans.modules.parsing.api.ParserManager$MultiUserTaskAction.run(ParserManager.java:166)
        at 
org.netbeans.modules.parsing.api.ParserManager$MultiUserTaskAction.run(ParserManager.java:138)
        at 
org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:181)
        at 
org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:178)
        at 
org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:153)
        at 
org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:335)
        at 
org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:118)
        at 
org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:67)
        at 
org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:178)
        at 
org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:83)
        at 
org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:452)
        at 
org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:423)
        at 
org.netbeans.api.java.source.JavaSource.runModificationTask(JavaSource.java:684)
        at 
org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.processFiles(JavaRefactoringPlugin.java:317)
        at 
org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.processFiles(JavaRefactoringPlugin.java:263)
        at 
org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.processFiles(JavaRefactoringPlugin.java:245)
        at 
org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.createAndAddElements(JavaRefactoringPlugin.java:326)
        at 
org.netbeans.modules.refactoring.java.plugins.RenameRefactoringPlugin.prepare(RenameRefactoringPlugin.java:626)
[catch] at 
org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare2(AbstractRefactoring.java:417)
        at 
org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:401)
        at 
org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:212)
        at 
org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare.run(ParametersPanel.java:1063)
        at 
org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
        at 
org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
        at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
        at 
org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)


> renaming a method throws java.util.ConcurrentModificationException
> ------------------------------------------------------------------
>
>                 Key: NETBEANS-3263
>                 URL: https://issues.apache.org/jira/browse/NETBEANS-3263
>             Project: NetBeans
>          Issue Type: Bug
>          Components: java - Refactoring
>    Affects Versions: 11.2
>         Environment: Windows 10 64bit
> OpenJDK 12.0.1 (from AdoptOpenJDK)
>            Reporter: Thomas Kellerer
>            Priority: Major
>         Attachments: ClassTwo.dump, RefactorTest.zip, messages.log
>
>
> When trying to rename a method a ConcurrentModificationException is thrown.
> I have attached ZIP file with a small Maven project. When you open ClassOne 
> and try to rename the method {{getFoo()}} the exception is thrown.



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