java.lang.NullPointerException at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribType(Attr.java:694) at com.sun.tools.javac.comp.Attr.attribType(Attr.java:687) at com.sun.tools.javac.comp.MemberEnter.visitVarDef(MemberEnter.java:416) at com.sun.tools.javadoc.JavadocMemberEnter.visitVarDef(JavadocMemberEnter.java:86) at org.netbeans.lib.nbjavac.services.NBJavadocMemberEnter.visitVarDef(NBJavadocMemberEnter.java:90) at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:926) at com.sun.tools.javac.comp.MemberEnter.memberEnter(MemberEnter.java:175) at com.sun.tools.javac.comp.Attr.visitVarDef(Attr.java:1111) at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:926) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:704) at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:723) at com.sun.tools.javac.comp.Attr.visitLambda(Attr.java:2556) at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1777) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.DeferredAttr$4.complete(DeferredAttr.java:341) at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:302) at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:289) at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.recover(DeferredAttr.java:974) at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.typeOf(DeferredAttr.java:945) at com.sun.tools.javac.comp.DeferredAttr$DeferredTypeMap.visitType(DeferredAttr.java:910) at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.visitType(DeferredAttr.java:933) at com.sun.tools.javac.comp.DeferredAttr$DeferredTypeMap.visitType(DeferredAttr.java:896) at com.sun.tools.javac.code.Type.accept(Type.java:214) at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4533) at com.sun.tools.javac.code.Type$TypeMapping.lambda$visit$12(Type.java:235) at com.sun.tools.javac.util.List.map(List.java:425) at com.sun.tools.javac.code.Type$TypeMapping.visit(Type.java:235) at com.sun.tools.javac.code.Type$TypeMapping.visitMethodType(Type.java:287) at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.visitMethodType(DeferredAttr.java:963) at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.visitMethodType(DeferredAttr.java:933) at com.sun.tools.javac.code.Type$MethodType.accept(Type.java:1459) at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4533) at com.sun.tools.javac.code.Type$TypeMapping.visitForAll(Type.java:308) at com.sun.tools.javac.code.Type$TypeMapping.visitForAll(Type.java:227) at com.sun.tools.javac.code.Type$ForAll.accept(Type.java:1771) at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4533) at com.sun.tools.javac.code.Type.map(Type.java:321) at com.sun.tools.javac.comp.Attr.checkMethodIdInternal(Attr.java:3855) at com.sun.tools.javac.comp.Attr.checkMethodId(Attr.java:3833) at com.sun.tools.javac.comp.Attr.checkId(Attr.java:3820) at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3705) at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:2075) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1929) at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1604) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3580) at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:2075) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1929) at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1604) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:674) at com.sun.tools.javac.comp.Attr.visitVarDef(Attr.java:1157) at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:926) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:704) at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:723) at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1205) at org.netbeans.lib.nbjavac.services.NBAttr.visitBlock(NBAttr.java:82) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:990) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:704) at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1091) at org.netbeans.lib.nbjavac.services.NBAttr.visitMethodDef(NBAttr.java:76) at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:842) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:704) at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4680) at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4579) at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4507) at com.sun.tools.javac.api.JavacTrees.getElement(JavacTrees.java:409) at com.sun.tools.javac.api.JavacTrees.getElement(JavacTrees.java:156) at org.netbeans.api.java.source.TreePathHandle.create(TreePathHandle.java:248) at org.netbeans.modules.java.navigation.BreadCrumbsNodeImpl.createBreadcrumbs(BreadCrumbsNodeImpl.java:206) at org.netbeans.modules.java.navigation.BreadCrumbsNodeImpl$3$1.scan(BreadCrumbsNodeImpl.java:492) at org.netbeans.modules.java.navigation.BreadCrumbsNodeImpl$3$1.scan(BreadCrumbsNodeImpl.java:471) at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:91) at com.sun.source.util.TreeScanner.scan(TreeScanner.java:106) at com.sun.source.util.TreeScanner.visitBlock(TreeScanner.java:249) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1002) at com.sun.source.util.TreeScanner.scan(TreeScanner.java:87) at org.netbeans.modules.java.navigation.BreadCrumbsNodeImpl$3$1.scan(BreadCrumbsNodeImpl.java:496) at org.netbeans.modules.java.navigation.BreadCrumbsNodeImpl$3$1.visitMethod(BreadCrumbsNodeImpl.java:501) at org.netbeans.modules.java.navigation.BreadCrumbsNodeImpl$3$1.visitMethod(BreadCrumbsNodeImpl.java:471) at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:874) at org.netbeans.modules.java.navigation.BreadCrumbsNodeImpl$3.run(BreadCrumbsNodeImpl.java:471) at org.netbeans.modules.java.navigation.BreadCrumbsNodeImpl$3.run(BreadCrumbsNodeImpl.java:460) at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:486) at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:609) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:153) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:137) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:204) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201) at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176) at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360) at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141) at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:88) at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:201) at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:104) at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:436) at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:407) at org.netbeans.modules.java.navigation.BreadCrumbsNodeImpl.getChildren(BreadCrumbsNodeImpl.java:460) at org.netbeans.modules.java.navigation.BreadCrumbsScanningTask.rootAndSelection(BreadCrumbsScanningTask.java:137) at org.netbeans.modules.java.navigation.BreadCrumbsScanningTask.run(BreadCrumbsScanningTask.java:105) at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:584) at org.netbeans.modules.parsing.impl.TaskProcessor$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)