java.lang.NullPointerException
   at org.netbeans.modules.j2ee.common.project.hints.OptionalEE7APIsHint.run(OptionalEE7APIsHint.java:114)
   at org.netbeans.modules.java.hints.infrastructure.RulesManager$WorkerImpl.createErrors(RulesManager.java:406)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker.runHint(HintsInvoker.java:685)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker.access$000(HintsInvoker.java:103)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker$ScannerImpl.runAndAdd(HintsInvoker.java:552)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:571)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:512)
   at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:80)
   at com.sun.source.util.TreeScanner.scan(TreeScanner.java:90)
   at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:103)
   at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:98)
   at com.sun.source.util.TreeScanner.visitAnnotation(TreeScanner.java:377)
   at com.sun.tools.javac.tree.JCTree$JCAnnotation.accept(JCTree.java:2018)
   at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
   at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:577)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:512)
   at com.sun.source.util.TreeScanner.scan(TreeScanner.java:90)
   at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:103)
   at com.sun.source.util.TreeScanner.visitModifiers(TreeScanner.java:372)
   at com.sun.tools.javac.tree.JCTree$JCModifiers.accept(JCTree.java:2045)
   at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
   at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:577)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:512)
   at com.sun.source.util.TreeScanner.visitVariable(TreeScanner.java:148)
   at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:741)
   at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
   at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:577)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:512)
   at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:80)
   at com.sun.source.util.TreeScanner.scan(TreeScanner.java:90)
   at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:103)
   at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:98)
   at com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:132)
   at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:622)
   at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
   at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:577)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:512)
   at com.sun.source.util.TreeScanner.scan(TreeScanner.java:90)
   at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:103)
   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$JCCompilationUnit.accept(JCTree.java:490)
   at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:49)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:596)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker.computeHints(HintsInvoker.java:233)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker.compute(HintsInvoker.java:210)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker.computeHints(HintsInvoker.java:178)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsInvoker.computeHints(HintsInvoker.java:134)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsTask.run(HintsTask.java:107)
   at org.netbeans.modules.java.hints.jackpot.impl.hints.HintsTask.run(HintsTask.java:77)
   at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:322)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:676)
   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:662)