java.lang.NullPointerException
   at com.sun.tools.javac.main.JavaCompiler.unrecoverableError(JavaCompiler.java:1252)
   at com.sun.tools.javac.main.JavaCompiler.shouldStop(JavaCompiler.java:577)
   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1133)
   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1117)
   at com.sun.tools.javac.main.JavaCompiler.complete(JavaCompiler.java:825)
   at com.sun.tools.javac.main.JavaCompiler$1.complete(JavaCompiler.java:318)
   at com.sun.tools.javac.jvm.ClassReader.fillIn(ClassReader.java:2589)
   at com.sun.tools.javac.jvm.ClassReader.complete(ClassReader.java:2484)
   at com.sun.tools.javac.jvm.ClassReader.access$000(ClassReader.java:77)
   at com.sun.tools.javac.jvm.ClassReader$1.complete(ClassReader.java:244)
   at com.sun.tools.javac.code.Symbol.complete(Symbol.java:577)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1053)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.flags(Symbol.java:982)
   at com.sun.tools.javac.code.Symbol$TypeSymbol.getEnclosedElements(Symbol.java:739)
   at org.netbeans.modules.java.source.save.ElementOverlay$PackageElementWrapper.getEnclosedElements(ElementOverlay.java:773)
   at org.netbeans.modules.java.source.pretty.ImportAnalysis2.setImports(ImportAnalysis2.java:164)
   at org.netbeans.modules.java.source.transform.ImmutableTreeTranslator.rewriteChildren(ImmutableTreeTranslator.java:544)
   at org.netbeans.modules.java.source.transform.ImmutableTreeTranslator.visitCompilationUnit(ImmutableTreeTranslator.java:345)
   at org.netbeans.modules.java.source.transform.ImmutableTreeTranslator.visitCompilationUnit(ImmutableTreeTranslator.java:97)
   at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:551)
   at org.netbeans.modules.java.source.transform.ImmutableTreeTranslator.translate(ImmutableTreeTranslator.java:146)
   at org.netbeans.api.java.source.WorkingCopy$5.translate(WorkingCopy.java:812)
   at org.netbeans.api.java.source.WorkingCopy.processCurrentCompilationUnit(WorkingCopy.java:836)
   at org.netbeans.api.java.source.WorkingCopy.getChanges(WorkingCopy.java:1179)
   at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:652)
   at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:639)
   at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:493)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:598)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:155)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:139)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:206)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:203)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:74)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:203)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:106)
   at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:443)
   at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:414)
   at org.netbeans.api.java.source.JavaSource.runModificationTask(JavaSource.java:660)
   at org.netbeans.modules.java.hints.FieldForUnusedParam$FixImpl.implement(FieldForUnusedParam.java:251)
   at org.netbeans.modules.editor.hints.HintsUI$1.run(HintsUI.java:837)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)