java.lang.NullPointerException at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.unrecoverableError(JavacProcessingEnvironment.java:1151) at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1321) at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1355) at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1243) at com.sun.tools.javac.main.JavaCompiler.lambda$readSourceFile$151(JavaCompiler.java:934) at com.sun.tools.javac.code.ClassFinder.complete(ClassFinder.java:315) at com.sun.tools.javac.code.Symbol.complete(Symbol.java:636) at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1325) at com.sun.tools.javac.code.Symbol$ClassSymbol.flags(Symbol.java:1250) at com.sun.tools.javac.code.Symbol$TypeSymbol.getEnclosedElements(Symbol.java:803) at org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.visitMethod(NPECheck.java:1113) at org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.visitMethod(NPECheck.java:544) at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:904) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94) at org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.scan(NPECheck.java:623) at org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.scan(NPECheck.java:544) at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90) at com.sun.source.util.TreeScanner.scan(TreeScanner.java:105) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:103) at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:113) at com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:187) at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:812) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94) at org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.scan(NPECheck.java:623) at org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.scan(NPECheck.java:544) at com.sun.source.util.TreeScanner.scan(TreeScanner.java:105) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:103) 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$JCCompilationUnit.accept(JCTree.java:593) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94) at org.netbeans.modules.java.hints.bugs.NPECheck$VisitorImpl.scan(NPECheck.java:623) at org.netbeans.modules.java.hints.bugs.NPECheck.computeExpressionsState(NPECheck.java:502) at org.netbeans.modules.java.hints.bugs.NPECheck.methodInvocation(NPECheck.java:316) at sun.reflect.GeneratedMethodAccessor106.invoke(GeneratedMethodAccessor106.java:0) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.netbeans.modules.java.hints.providers.code.CodeHintProviderImpl$WorkerImpl.createErrors(CodeHintProviderImpl.java:340) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.runHint(HintsInvoker.java:821) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.access$400(HintsInvoker.java:113) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.runAndAdd(HintsInvoker.java:680) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:699) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:633) at com.sun.source.util.TreeScanner.visitExpressionStatement(TreeScanner.java:433) at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1460) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:705) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:633) at com.sun.source.util.TreeScanner.scan(TreeScanner.java:105) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:103) at com.sun.source.util.TreeScanner.visitBlock(TreeScanner.java:248) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1032) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:705) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:633) at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90) at com.sun.source.util.TreeScanner.visitMethod(TreeScanner.java:206) at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:904) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:705) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:633) at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90) at com.sun.source.util.TreeScanner.scan(TreeScanner.java:105) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:103) at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:113) at com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:187) at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:812) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:705) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:633) at com.sun.source.util.TreeScanner.scan(TreeScanner.java:105) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:103) 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$JCCompilationUnit.accept(JCTree.java:593) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:56) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:724) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHintsImpl(HintsInvoker.java:268) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:251) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:216) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:189) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:151) at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:137) at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:88) at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:298) at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:584) at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:809) at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304) at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:725) at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:686) 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)