java.lang.AssertionError
        at org.netbeans.modules.java.source.JavaFileFilterQuery.getFilter(JavaFileFilterQuery.java:60)
        at org.netbeans.modules.java.source.parsing.JavacParser.<init>(JavacParser.java:223)
        at org.netbeans.modules.java.source.parsing.JavacParserFactory.createPrivateParser(JavacParserFactory.java:75)
        at org.netbeans.api.java.source.JavaSource$JavaSourceAccessorImpl.createCompilationController(JavaSource.java:742)
        at org.netbeans.modules.java.source.save.Reformatter.reformat(Reformatter.java:96)
        at org.netbeans.modules.editor.indent.TaskHandler$MimeItem.runTask(TaskHandler.java:504)
        at org.netbeans.modules.editor.indent.TaskHandler.runTasks(TaskHandler.java:271)
        at org.netbeans.modules.editor.indent.IndentImpl.reformat(IndentImpl.java:293)
        at org.netbeans.modules.editor.indent.FormatterImpl.reformat(FormatterImpl.java:187)
        at org.netbeans.lib.editor.codetemplates.CodeTemplateInsertHandler.run(CodeTemplateInsertHandler.java:334)
        at org.netbeans.editor.GuardedDocument.runAtomicAsUser(GuardedDocument.java:354)
        at org.netbeans.lib.editor.codetemplates.CodeTemplateInsertHandler.insertTemplate(CodeTemplateInsertHandler.java:262)
        at org.netbeans.lib.editor.codetemplates.CodeTemplateInsertHandler.processTemplate(CodeTemplateInsertHandler.java:224)
        at org.netbeans.lib.editor.codetemplates.CodeTemplateManagerOperation.insert(CodeTemplateManagerOperation.java:238)
        at org.netbeans.lib.editor.codetemplates.api.CodeTemplate.insert(CodeTemplate.java:104)
        at org.netbeans.lib.editor.codetemplates.AbbrevDetection.expand(AbbrevDetection.java:506)
        at org.netbeans.lib.editor.codetemplates.AbbrevDetection.expand(AbbrevDetection.java:415)
        at org.netbeans.lib.editor.codetemplates.AbbrevDetection.checkExpansionKeystroke(AbbrevDetection.java:319)
        at org.netbeans.lib.editor.codetemplates.AbbrevDetection.keyPressed(AbbrevDetection.java:279)
        at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:233)
        at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:232)
        at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:232)
        at java.awt.Component.processKeyEvent(Component.java:6092)
        at javax.swing.JComponent.processKeyEvent(JComponent.java:2799)
        at java.awt.Component.processEvent(Component.java:5911)
        at java.awt.Container.processEvent(Container.java:2023)
        at java.awt.Component.dispatchEventImpl(Component.java:4501)
        at java.awt.Container.dispatchEventImpl(Container.java:2081)
        at java.awt.Component.dispatchEvent(Component.java:4331)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1848)
        at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:704)
        at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:969)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:841)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:668)
        at java.awt.Component.dispatchEventImpl(Component.java:4373)
        at java.awt.Container.dispatchEventImpl(Container.java:2081)
        at java.awt.Window.dispatchEventImpl(Window.java:2458)
        at java.awt.Component.dispatchEvent(Component.java:4331)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)