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https://issues.apache.org/jira/browse/NETBEANS-814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16480545#comment-16480545
]
Enrico Olivelli commented on NETBEANS-814:
------------------------------------------
Found, it is a plugin, I will try now
> NullPointerException while editing Java file, autocompletion is broken, need
> to restart
> ---------------------------------------------------------------------------------------
>
> Key: NETBEANS-814
> URL: https://issues.apache.org/jira/browse/NETBEANS-814
> Project: NetBeans
> Issue Type: Bug
> Affects Versions: 9.0
> Environment: Linux Fedora 27
> NetBeans 9 RC1
> NetBeans running on Java 10 without nb-javac
> Java Maven Project with source version 1.8
> Reporter: Enrico Olivelli
> Priority: Blocker
>
> I periodically get this error while having a Java file opened in the editor.
> I did not find a duplicate in JIRA
> {code:java}
> java.lang.NullPointerException
> at
> jdk.compiler/com.sun.tools.javac.api.JavacTrees.getElement(JavacTrees.java:386)
> at
> jdk.compiler/com.sun.tools.javac.api.JavacTrees.getElement(JavacTrees.java:163)
> at
> org.netbeans.modules.java.hints.jdk.mapreduce.PreconditionsChecker$VariablesVisitor.isLocalVariable(PreconditionsChecker.java:226)
> at
> org.netbeans.modules.java.hints.jdk.mapreduce.PreconditionsChecker$VariablesVisitor.visitIdentifier(PreconditionsChecker.java:218)
> at
> org.netbeans.modules.java.hints.jdk.mapreduce.PreconditionsChecker$VariablesVisitor.visitIdentifier(PreconditionsChecker.java:192)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCIdent.accept(JCTree.java:2251)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:86)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitVariable(TreeScanner.java:221)
> at
> org.netbeans.modules.java.hints.jdk.mapreduce.PreconditionsChecker$VariablesVisitor.visitVariable(PreconditionsChecker.java:213)
> at
> org.netbeans.modules.java.hints.jdk.mapreduce.PreconditionsChecker$VariablesVisitor.visitVariable(PreconditionsChecker.java:192)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:974)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:86)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitBlock(TreeScanner.java:248)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1032)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:86)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
> at
> org.netbeans.api.java.source.support.ErrorAwareTreeScanner.visitErroneous(ErrorAwareTreeScanner.java:32)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCErroneous.accept(JCTree.java:2927)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:86)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitExpressionStatement(TreeScanner.java:433)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1460)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:86)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitIf(TreeScanner.java:419)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCIf.accept(JCTree.java:1433)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:86)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitBlock(TreeScanner.java:248)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1032)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:86)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitIf(TreeScanner.java:419)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCIf.accept(JCTree.java:1433)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:86)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitBlock(TreeScanner.java:248)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1032)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:86)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitEnhancedForLoop(TreeScanner.java:306)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCEnhancedForLoop.accept(JCTree.java:1172)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:86)
> at
> org.netbeans.modules.java.hints.jdk.mapreduce.PreconditionsChecker.getInnerVariables(PreconditionsChecker.java:90)
> at
> org.netbeans.modules.java.hints.jdk.mapreduce.PreconditionsChecker.<init>(PreconditionsChecker.java:75)
> at
> org.netbeans.modules.java.hints.jdk.mapreduce.ForLoopToFunctionalHint.computeWarning(ForLoopToFunctionalHint.java:55)
> at jdk.internal.reflect.GeneratedMethodAccessor170.invoke(Unknown Source)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:564)
> [catch] at
> org.netbeans.modules.java.hints.providers.code.CodeHintProviderImpl$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
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
> at
> org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:78)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitBlock(TreeScanner.java:248)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1032)
> at
> jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
> at
> org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:69)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:682)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:610)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitTry(TreeScanner.java:374)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCTry.accept(JCTree.java:1328)
> at
> jdk.compiler/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 jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
> at
> org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:78)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitBlock(TreeScanner.java:248)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1032)
> at
> jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
> at
> org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:69)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:682)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:610)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitMethod(TreeScanner.java:206)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:898)
> at
> jdk.compiler/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
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
> at
> org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:78)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:113)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:187)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:808)
> at
> jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
> at
> org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:69)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:682)
> at
> org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:610)
> at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
> at
> org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:78)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:113)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.visitCompilationUnit(TreeScanner.java:144)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:591)
> at
> jdk.compiler/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:514)
> 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)
> {code}
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