java.lang.NullPointerException at org.netbeans.modules.refactoring.java.plugins.RenameRefactoringPlugin.fastCheckParameters(RenameRefactoringPlugin.java:273) at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$WorkingTask.run(JavaRefactoringPlugin.java:359) at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$WorkingTask.run(JavaRefactoringPlugin.java:329) at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:488) at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:588) at org.netbeans.modules.parsing.api.ParserManager$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:201) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:198) at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176) at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360) at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:74) at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:198) at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:106) at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:438) at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:409) at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$WorkingTask.run(JavaRefactoringPlugin.java:342) at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$WorkingTask.access$100(JavaRefactoringPlugin.java:329) at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.fastCheckParameters(JavaRefactoringPlugin.java:146) at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsFastCheckParams(AbstractRefactoring.java:530) at org.netbeans.modules.refactoring.api.AbstractRefactoring.fastCheckParameters(AbstractRefactoring.java:283) at org.netbeans.modules.refactoring.java.ui.RenameRefactoringUI.checkParameters(RenameRefactoringUI.java:267) at org.netbeans.modules.refactoring.spi.impl.ParametersPanel.stateChanged(ParametersPanel.java:935) at org.netbeans.modules.refactoring.java.ui.RenamePanel$1.insertUpdate(RenamePanel.java:116) at javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:201) at javax.swing.text.AbstractDocument.processInsertStringResult(AbstractDocument.java:770) at javax.swing.text.AbstractDocument.insertString(AbstractDocument.java:714) at javax.swing.text.PlainDocument.insertString(PlainDocument.java:130) at javax.swing.text.AbstractDocument.replace(AbstractDocument.java:669) at javax.swing.text.JTextComponent.replaceSelection(JTextComponent.java:1379) at javax.swing.text.DefaultEditorKit$DefaultKeyTypedAction.actionPerformed(DefaultEditorKit.java:884) at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1665) at javax.swing.JComponent.processKeyBinding(JComponent.java:2880) at javax.swing.JComponent.processKeyBindings(JComponent.java:2927) at javax.swing.JComponent.processKeyEvent(JComponent.java:2843) at java.awt.Component.processEvent(Component.java:6290) at java.awt.Container.processEvent(Container.java:2229) at java.awt.Component.dispatchEventImpl(Component.java:4869) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Component.dispatchEvent(Component.java:4691) at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1953) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:798) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1066) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:937) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:763) at java.awt.Component.dispatchEventImpl(Component.java:4740) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Window.dispatchEventImpl(Window.java:2721) at java.awt.Component.dispatchEvent(Component.java:4691) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:728) at java.awt.EventQueue.access$200(EventQueue.java:103) at java.awt.EventQueue$3.run(EventQueue.java:687) at java.awt.EventQueue$3.run(EventQueue.java:685) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86) at java.awt.EventQueue$4.run(EventQueue.java:701) at java.awt.EventQueue$4.run(EventQueue.java:699) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75) at java.awt.EventQueue.dispatchEvent(EventQueue.java:698) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:220) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:135) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:127) at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:184) at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:229) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:227) at java.awt.Dialog.show(Dialog.java:1084) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1078) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1128) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1100) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:128) at org.openide.util.Mutex.doEventAccess(Mutex.java:1363) at org.openide.util.Mutex.readAccess(Mutex.java:273) at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:1085) at java.awt.Component.show(Component.java:1656) at java.awt.Component.setVisible(Component.java:1608) at java.awt.Window.setVisible(Window.java:1014) at java.awt.Dialog.setVisible(Dialog.java:1005) at org.netbeans.core.NotifyExcPanel.updateState(NotifyExcPanel.java:415) at org.netbeans.core.NotifyExcPanel.access$400(NotifyExcPanel.java:98) at org.netbeans.core.NotifyExcPanel$2.run(NotifyExcPanel.java:346) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:726) at java.awt.EventQueue.access$200(EventQueue.java:103) at java.awt.EventQueue$3.run(EventQueue.java:687) at java.awt.EventQueue$3.run(EventQueue.java:685) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75) at java.awt.EventQueue.dispatchEvent(EventQueue.java:696) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:220) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:135) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:127) at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:184) at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:229) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:227) at java.awt.Dialog.show(Dialog.java:1084) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1078) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1128) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1100) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:128) at org.openide.util.Mutex.doEventAccess(Mutex.java:1363) at org.openide.util.Mutex.readAccess(Mutex.java:273) at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:1085) at java.awt.Component.show(Component.java:1656) at java.awt.Component.setVisible(Component.java:1608) at java.awt.Window.setVisible(Window.java:1014) at java.awt.Dialog.setVisible(Dialog.java:1005) at org.netbeans.modules.refactoring.spi.impl.ParametersPanel.showDialog(ParametersPanel.java:666) at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.refresh(RefactoringPanel.java:680) at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.(RefactoringPanel.java:168) at org.netbeans.modules.refactoring.spi.ui.UI.openRefactoringUI(UI.java:86) at org.netbeans.modules.refactoring.java.ui.ContextAnalyzer$4.show(ContextAnalyzer.java:658) at org.netbeans.modules.refactoring.java.ui.ContextAnalyzer$TextComponentTask.run(ContextAnalyzer.java:398) at org.netbeans.api.java.source.ui.ScanDialog.runWhenScanFinished(ScanDialog.java:153) at org.netbeans.modules.refactoring.java.ui.RefactoringActionsProvider.doRename(RefactoringActionsProvider.java:81) at org.netbeans.modules.refactoring.api.impl.ActionsImplementationFactory.doRename(ActionsImplementationFactory.java:91) at org.netbeans.modules.refactoring.spi.impl.RenameAction.performAction(RenameAction.java:77) at org.netbeans.modules.refactoring.spi.impl.RefactoringGlobalAction$ContextAction.actionPerformed(RefactoringGlobalAction.java:197) at org.netbeans.modules.java.editor.rename.InstantRenamePerformer.doFullRename(InstantRenamePerformer.java:280) at org.netbeans.modules.java.editor.rename.InstantRenamePerformer.invokeInstantRename(InstantRenamePerformer.java:263) at org.netbeans.modules.java.editor.rename.InstantRenameAction.actionPerformed(InstantRenameAction.java:62) at org.netbeans.editor.BaseAction.actionPerformed(BaseAction.java:339) at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1665) at javax.swing.JComponent.processKeyBinding(JComponent.java:2880) at javax.swing.JComponent.processKeyBindings(JComponent.java:2927) at javax.swing.JComponent.processKeyEvent(JComponent.java:2843) at java.awt.Component.processEvent(Component.java:6290) at java.awt.Container.processEvent(Container.java:2229) at java.awt.Component.dispatchEventImpl(Component.java:4869) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Component.dispatchEvent(Component.java:4691) at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1953) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:798) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1066) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:937) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:763) at java.awt.Component.dispatchEventImpl(Component.java:4740) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Window.dispatchEventImpl(Window.java:2721) at java.awt.Component.dispatchEvent(Component.java:4691) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:728) at java.awt.EventQueue.access$200(EventQueue.java:103) at java.awt.EventQueue$3.run(EventQueue.java:687) at java.awt.EventQueue$3.run(EventQueue.java:685) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86) at java.awt.EventQueue$4.run(EventQueue.java:701) at java.awt.EventQueue$4.run(EventQueue.java:699) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75) at java.awt.EventQueue.dispatchEvent(EventQueue.java:698) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:220) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:135) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:123) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:119) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:111) at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)