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https://issues.apache.org/jira/browse/NETBEANS-5548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17436645#comment-17436645
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Michael Bien commented on NETBEANS-5548:
----------------------------------------
does this still happen with NB 12.5?
> Issues with Javac in WebApp
> ---------------------------
>
> Key: NETBEANS-5548
> URL: https://issues.apache.org/jira/browse/NETBEANS-5548
> Project: NetBeans
> Issue Type: Bug
> Affects Versions: 12.3
> Reporter: Victor Pineda
> Priority: Critical
>
> I see many others issues related to this one, but not sure if they are the
> same one as this, anyway, here mis my report.
>
> I'm getting the following with my Maven Web App.
>
> java.lang.NullPointerException: Cannot invoke
> "com.sun.tools.javac.processing.JavacProcessingEnvironment$DiscoveredProcessors.iterator()"
> because "this.discoveredProcs" is nulljava.lang.NullPointerException: Cannot
> invoke
> "com.sun.tools.javac.processing.JavacProcessingEnvironment$DiscoveredProcessors.iterator()"
> because "this.discoveredProcs" is null at
> com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:914)
> at
> com.sun.tools.javac.processing.JavacProcessingEnvironment.access$2500(JavacProcessingEnvironment.java:113)
> at
> com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1298)
> at
> com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1380)
> at
> com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1350)
> at
> com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1240)
> at
> com.sun.tools.javac.main.JavaCompiler.lambda$readSourceFile$3(JavaCompiler.java:930)
> at com.sun.tools.javac.code.ClassFinder.complete(ClassFinder.java:330) at
> com.sun.tools.javac.code.Symbol.complete(Symbol.java:683) at
> com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1434) at
> com.sun.tools.javac.code.Symbol.apiComplete(Symbol.java:689) at
> com.sun.tools.javac.code.Symbol$TypeSymbol.getEnclosedElements(Symbol.java:863)
> at
> com.sun.tools.javac.code.Symbol$TypeSymbol.getEnclosedElements(Symbol.java:798)
> at
> org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.visitMethod(NPECheck.java:1160)
> at
> org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.visitMethod(NPECheck.java:546)
> at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:940) at
> com.sun.source.util.TreeScanner.scan(TreeScanner.java:86) at
> org.netbeans.api.java.source.support.CancellableTreeScanner.scan(CancellableTreeScanner.java:69)
> at
> org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.scan(NPECheck.java:653)
> at
> org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.scan(NPECheck.java:546)
> at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90) at
> com.sun.source.util.TreeScanner.scan(TreeScanner.java:105) at
> org.netbeans.api.java.source.support.CancellableTreeScanner.scan(CancellableTreeScanner.java:78)
> at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:113) at
> com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:189) at
> com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:846) at
> com.sun.source.util.TreeScanner.scan(TreeScanner.java:86) at
> org.netbeans.api.java.source.support.CancellableTreeScanner.scan(CancellableTreeScanner.java:69)
> at
> org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.scan(NPECheck.java:653)
> at
> org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.scan(NPECheck.java:546)
> at com.sun.source.util.TreeScanner.scan(TreeScanner.java:105) at
> org.netbeans.api.java.source.support.CancellableTreeScanner.scan(CancellableTreeScanner.java:78)
> at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:113) at
> com.sun.source.util.TreeScanner.visitCompilationUnit(TreeScanner.java:144) at
> com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:605) at
> com.sun.source.util.TreeScanner.scan(TreeScanner.java:86) at
> org.netbeans.api.java.source.support.CancellableTreeScanner.scan(CancellableTreeScanner.java:69)
> at
> org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.scan(NPECheck.java:653)
> at
> org.netbeans.modules.java.hints.bugs.NPECheck.computeExpressionsState(NPECheck.java:503)
> at
> org.netbeans.modules.java.hints.bugs.NPECheck.methodInvocation(NPECheck.java:308)
> at jdk.internal.reflect.GeneratedMethodAccessor102.invoke(Unknown Source) at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:567)[catch] at
> org.netbeans.modules.java.hints.providers.code.CodeHintProviderImpl$WorkerImpl.createErrors(CodeHintProviderImpl.java:317)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.runHint(HintsInvoker.java:798)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.access$400(HintsInvoker.java:90)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.runAndAdd(HintsInvoker.java:657)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:676)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:610)
> at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90) at
> com.sun.source.util.TreeScanner.visitVariable(TreeScanner.java:225) at
> com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:1016) at
> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82) at
> org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:69)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:682)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:610)
> at com.sun.source.util.TreeScanner.scan(TreeScanner.java:105) at
> org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:78)
> at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:113) at
> com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:189) at
> com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:846) at
> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82) at
> org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:69)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:682)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:610)
> at com.sun.source.util.TreeScanner.scan(TreeScanner.java:105) at
> org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:78)
> at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:113) at
> com.sun.source.util.TreeScanner.visitCompilationUnit(TreeScanner.java:144) at
> com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:605) at
> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:56) at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:701)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHintsImpl(HintsInvoker.java:245)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:228)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:193)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:166)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:128)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:114)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:65)
> at
> org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:273)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:561)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:786)
> at org.openide.util.lookup.Lookups.executeWith(Lookups.java:279) at
> org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:702)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:663)
> at
> java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
> at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at
> org.openide.util.RequestProcessor$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)
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