java.lang.NullPointerException
   at com.sun.tools.javac.comp.MemberEnter.getMethodEnv(MemberEnter.java:828)
   at com.sun.tools.javac.api.JavacTrees.getAttrContext(JavacTrees.java:268)
   at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:188)
   at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:80)
   at org.netbeans.modules.java.hints.jackpot.impl.Utilities$ScannerImpl.visitBlock(Utilities.java:624)
   at org.netbeans.modules.java.hints.jackpot.impl.Utilities$ScannerImpl.visitBlock(Utilities.java:620)
   at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:782)
   at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
   at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:80)
   at com.sun.source.util.TreeScanner.visitMethod(TreeScanner.java:143)
   at org.netbeans.modules.java.hints.jackpot.impl.Utilities$ScannerImpl.visitMethod(Utilities.java:632)
   at org.netbeans.modules.java.hints.jackpot.impl.Utilities$ScannerImpl.visitMethod(Utilities.java:620)
   at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:682)
   at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
   at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:80)
   at com.sun.source.util.TreeScanner.scan(TreeScanner.java:90)
   at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:98)
   at com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:132)
   at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:605)
   at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
   at com.sun.source.util.TreeScanner.scan(TreeScanner.java:90)
   at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:98)
   at com.sun.source.util.TreeScanner.visitCompilationUnit(TreeScanner.java:119)
   at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:483)
   at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
   at org.netbeans.modules.java.hints.jackpot.impl.Utilities$SPIImpl.constructScope(Utilities.java:610)
   at org.netbeans.modules.java.hints.jackpot.impl.Utilities.constructScope(Utilities.java:556)
   at org.netbeans.modules.java.hints.jackpot.impl.pm.Pattern.parseAndAttribute(Pattern.java:164)
   at org.netbeans.modules.java.hints.jackpot.impl.pm.Pattern.compile(Pattern.java:94)
   at org.netbeans.modules.java.hints.jackpot.impl.pm.Pattern.compile(Pattern.java:89)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker.doComputeHints(HintsInvoker.java:434)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker.computeSuggestions(HintsInvoker.java:396)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker.compute(HintsInvoker.java:201)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker.computeHints(HintsInvoker.java:174)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker.computeHints(HintsInvoker.java:130)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsTask.run(HintsTask.java:95)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsTask.run(HintsTask.java:69)
   at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:298)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:654)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
   at java.lang.Thread.run(Thread.java:619)