Rename refactor fails 1/2 on Swing event handlers #9671

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1. dca00

   added

   kind:bugBug report or fixBug report or fix

   needs:triageRequires attention from one of the committersRequires attention from one of the committers

   on Oct 6, 2026
2. mbien commented on Oct 6, 2026

   

   mbien

   on Oct 6, 2026

   Last edited by mbien

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   seems to be a regression since NB 29.

   getting a NPE while trying to rename a JButton form designer component from within the code editor (no event listeners added). It does work from the Properties window. Tbh I didn't even know that was an option since the generated code is in guarded sections - but the rename action did seem to work until NB 29.

   SEVERE [org.openide.util.Exceptions]
   java.lang.NullPointerException: Cannot invoke "org.netbeans.modules.refactoring.api.AbstractRefactoring.getGBHandlers()" because "refactoring" is null
   	at org.netbeans.modules.refactoring.api.AccessorImpl.getGBHandlers(AccessorImpl.java:39)
   	at org.netbeans.modules.refactoring.spi.RefactoringElementsBag.add(RefactoringElementsBag.java:93)
   	at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.createAndAddElements(JavaRefactoringPlugin.java:345)
   	at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.createAndAddElements(JavaRefactoringPlugin.java:356)
   	at org.netbeans.modules.refactoring.java.plugins.RenameRefactoringPlugin.prepare(RenameRefactoringPlugin.java:613)
   [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:1370)
   	at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
   	at org.openide.util.lookup.Lookups.executeWith(Lookups.java:287)
   	at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1981)
   

   likely since #9069
3. mbien

   added

   Java[ci] enable extra Java tests (java.completion, java.source.base, java.hints, refactoring.java, form)[ci] enable extra Java tests (java.completion, java.source.base, java.hints, refactoring.java, form)

   FormDesignerGUI builder, also known as MatisseGUI builder, also known as Matisse

   and removed

   needs:triageRequires attention from one of the committersRequires attention from one of the committers

   on Oct 6, 2026
4. mbien

   closed this as completedin #9674on Oct 13, 2026