java.lang.reflect.InvocationTargetException at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:421) at org.eclipse.ui.internal.WorkbenchWindow$13.run(WorkbenchWindow.java:1829) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:1826) at org.eclipse.jdt.internal.ui.refactoring.RefactoringExecutionHelper.perform(RefactoringExecutionHelper.java:191) at org.eclipse.jdt.internal.ui.refactoring.RefactoringExecutionHelper.perform(RefactoringExecutionHelper.java:151) at org.eclipse.jdt.ui.refactoring.RenameSupport.perform(RenameSupport.java:198) at org.eclipse.jdt.internal.ui.refactoring.reorg.RenameLinkedMode.doRename(RenameLinkedMode.java:362) at org.eclipse.jdt.internal.ui.refactoring.reorg.RenameLinkedMode$EditorSynchronizer.left(RenameLinkedMode.java:119) at org.eclipse.jface.text.link.LinkedModeModel.exit(LinkedModeModel.java:341) at org.eclipse.jface.text.link.LinkedModeUI$4.run(LinkedModeUI.java:1193) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3717) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3366) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:140) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:611) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591) at org.eclipse.equinox.launcher.Main.run(Main.java:1450) at org.eclipse.equinox.launcher.Main.main(Main.java:1426) Caused by: java.lang.NullPointerException at org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope.connectTypeHierarchy(CompilationUnitScope.java:386) at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.completeTypeBindings(LookupEnvironment.java:219) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1135) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1217) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1334) at org.eclipse.jdt.internal.core.search.JavaSearchParticipant.locateMatches(JavaSearchParticipant.java:95) at org.eclipse.jdt.internal.core.search.BasicSearchEngine.findMatches(BasicSearchEngine.java:231) at org.eclipse.jdt.internal.core.search.BasicSearchEngine.search(BasicSearchEngine.java:515) at org.eclipse.jdt.core.search.SearchEngine.search(SearchEngine.java:593) at org.eclipse.jdt.internal.corext.refactoring.rename.RippleMethodFinder2.findAllDeclarations(RippleMethodFinder2.java:356) at org.eclipse.jdt.internal.corext.refactoring.rename.RippleMethodFinder2.findAllRippleMethods(RippleMethodFinder2.java:187) at org.eclipse.jdt.internal.corext.refactoring.rename.RippleMethodFinder2.getAllRippleMethods(RippleMethodFinder2.java:168) at org.eclipse.jdt.internal.corext.refactoring.rename.RippleMethodFinder2.getRelatedMethods(RippleMethodFinder2.java:161) at org.eclipse.jdt.internal.corext.refactoring.rename.RenameMethodProcessor.initializeMethodsToRename(RenameMethodProcessor.java:244) at org.eclipse.jdt.internal.corext.refactoring.rename.RenameMethodProcessor.doCheckFinalConditions(RenameMethodProcessor.java:370) at org.eclipse.jdt.internal.corext.refactoring.rename.RenameVirtualMethodProcessor.doCheckFinalConditions(RenameVirtualMethodProcessor.java:146) at org.eclipse.jdt.internal.corext.refactoring.rename.JavaRenameProcessor.checkFinalConditions(JavaRenameProcessor.java:48) at org.eclipse.ltk.core.refactoring.participants.ProcessorBasedRefactoring.checkFinalConditions(ProcessorBasedRefactoring.java:224) at org.eclipse.ltk.core.refactoring.Refactoring.checkAllConditions(Refactoring.java:162) at org.eclipse.jdt.internal.ui.refactoring.RefactoringExecutionHelper$Operation.run(RefactoringExecutionHelper.java:80) at org.eclipse.jdt.internal.core.BatchOperation.executeOperation(BatchOperation.java:39) at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:728) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2345) at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:5331) at org.eclipse.jdt.internal.ui.actions.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:106) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121) Root exception: java.lang.NullPointerException at org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope.connectTypeHierarchy(CompilationUnitScope.java:386) at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.completeTypeBindings(LookupEnvironment.java:219) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1135) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1217) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1334) at org.eclipse.jdt.internal.core.search.JavaSearchParticipant.locateMatches(JavaSearchParticipant.java:95) at org.eclipse.jdt.internal.core.search.BasicSearchEngine.findMatches(BasicSearchEngine.java:231) at org.eclipse.jdt.internal.core.search.BasicSearchEngine.search(BasicSearchEngine.java:515) at org.eclipse.jdt.core.search.SearchEngine.search(SearchEngine.java:593) at org.eclipse.jdt.internal.corext.refactoring.rename.RippleMethodFinder2.findAllDeclarations(RippleMethodFinder2.java:356) at org.eclipse.jdt.internal.corext.refactoring.rename.RippleMethodFinder2.findAllRippleMethods(RippleMethodFinder2.java:187) at org.eclipse.jdt.internal.corext.refactoring.rename.RippleMethodFinder2.getAllRippleMethods(RippleMethodFinder2.java:168) at org.eclipse.jdt.internal.corext.refactoring.rename.RippleMethodFinder2.getRelatedMethods(RippleMethodFinder2.java:161) at org.eclipse.jdt.internal.corext.refactoring.rename.RenameMethodProcessor.initializeMethodsToRename(RenameMethodProcessor.java:244) at org.eclipse.jdt.internal.corext.refactoring.rename.RenameMethodProcessor.doCheckFinalConditions(RenameMethodProcessor.java:370) at org.eclipse.jdt.internal.corext.refactoring.rename.RenameVirtualMethodProcessor.doCheckFinalConditions(RenameVirtualMethodProcessor.java:146) at org.eclipse.jdt.internal.corext.refactoring.rename.JavaRenameProcessor.checkFinalConditions(JavaRenameProcessor.java:48) at org.eclipse.ltk.core.refactoring.participants.ProcessorBasedRefactoring.checkFinalConditions(ProcessorBasedRefactoring.java:224) at org.eclipse.ltk.core.refactoring.Refactoring.checkAllConditions(Refactoring.java:162) at org.eclipse.jdt.internal.ui.refactoring.RefactoringExecutionHelper$Operation.run(RefactoringExecutionHelper.java:80) at org.eclipse.jdt.internal.core.BatchOperation.executeOperation(BatchOperation.java:39) at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:728) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2345) at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:5331) at org.eclipse.jdt.internal.ui.actions.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:106) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)