javax.swing.text.BadLocationException: Invalid offset=-1 < 0; docLen=278
   at org.netbeans.modules.editor.lib2.document.EditorDocumentContent.checkOffsetNonNegative(EditorDocumentContent.java:264)
   at org.netbeans.modules.editor.lib2.document.EditorDocumentContent.checkOffsetInContent(EditorDocumentContent.java:278)
   at org.netbeans.modules.editor.lib2.document.EditorDocumentContent.createBackwardBiasPosition(EditorDocumentContent.java:199)
   at org.netbeans.editor.BaseDocument.createPosition(BaseDocument.java:1359)
   at org.openide.text.NbDocument.createPosition(NbDocument.java:225)
   at org.netbeans.modules.java.hints.infrastructure.ErrorHintsProvider$1.run(ErrorHintsProvider.java:533)
   at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1383)
   at org.netbeans.modules.java.hints.infrastructure.ErrorHintsProvider.getLine(ErrorHintsProvider.java:512)
   at org.netbeans.modules.java.hints.infrastructure.ErrorHintsProvider.computeErrors(ErrorHintsProvider.java:193)
   at org.netbeans.modules.java.hints.infrastructure.ErrorHintsProvider.computeErrors(ErrorHintsProvider.java:135)
   at org.netbeans.modules.java.hints.infrastructure.ErrorHintsProvider.run(ErrorHintsProvider.java:580)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:559)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:735)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
   at java.util.concurrent.FutureTask.run(FutureTask.java:166)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
   at java.lang.Thread.run(Thread.java:722)