Failure to copy paste a .java file in a mixed java/scala project (Package Explorer)
Copying a scala file works fine.


java.lang.NullPointerException
at org.eclipse.jdt.core.search.SearchPattern.createPattern_aroundBody1$advice(SearchPattern.java:338)
at org.eclipse.jdt.core.search.SearchPattern.createPattern(SearchPattern.java:1)
at org.eclipse.jdt.internal.corext.refactoring.reorg.CreateCopyOfCompilationUnitChange.createSearchPattern(CreateCopyOfCompilationUnitChange.java:81)
at org.eclipse.jdt.internal.corext.refactoring.reorg.CreateCopyOfCompilationUnitChange.getReferences(CreateCopyOfCompilationUnitChange.java:106)
at org.eclipse.jdt.internal.corext.refactoring.reorg.CreateCopyOfCompilationUnitChange.createChangeManager(CreateCopyOfCompilationUnitChange.java:61)
at org.eclipse.jdt.internal.corext.refactoring.reorg.CreateCopyOfCompilationUnitChange.getCopiedFileSource(CreateCopyOfCompilationUnitChange.java:92)
at org.eclipse.jdt.internal.corext.refactoring.reorg.CreateCopyOfCompilationUnitChange.getOldFile(CreateCopyOfCompilationUnitChange.java:159)
at org.eclipse.jdt.internal.corext.refactoring.nls.changes.CreateFileChange.perform(CreateFileChange.java:150)
at org.eclipse.jdt.internal.corext.refactoring.reorg.CreateCopyOfCompilationUnitChange.perform(CreateCopyOfCompilationUnitChange.java:183)
at org.eclipse.ltk.core.refactoring.CompositeChange.perform(CompositeChange.java:278)
at org.eclipse.jdt.internal.corext.refactoring.changes.DynamicValidationStateChange.access$0(DynamicValidationStateChange.java:1)
at org.eclipse.jdt.internal.corext.refactoring.changes.DynamicValidationStateChange$1.run(DynamicValidationStateChange.java:98)
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:1800)
at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:4694)
at org.eclipse.jdt.internal.corext.refactoring.changes.DynamicValidationStateChange.perform(DynamicValidationStateChange.java:101)
at org.eclipse.jdt.internal.corext.refactoring.reorg.JavaCopyProcessor$1.perform(JavaCopyProcessor.java:112)
at org.eclipse.ltk.core.refactoring.CompositeChange.perform(CompositeChange.java:278)
at org.eclipse.ltk.core.refactoring.PerformChangeOperation$1.run(PerformChangeOperation.java:260)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1800)
at org.eclipse.ltk.core.refactoring.PerformChangeOperation.executeChange(PerformChangeOperation.java:308)
at org.eclipse.ltk.core.refactoring.PerformChangeOperation.run(PerformChangeOperation.java:225)
at org.eclipse.jdt.internal.ui.refactoring.RefactoringExecutionHelper$Operation.run(RefactoringExecutionHelper.java:106)
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:1800)
at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:4694)
at org.eclipse.jdt.internal.ui.actions.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:106)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372)
at org.eclipse.jface.window.ApplicationWindow$1.run(ApplicationWindow.java:759)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jface.window.ApplicationWindow.run(ApplicationWindow.java:756)
at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2579)
at org.eclipse.jdt.internal.ui.refactoring.RefactoringExecutionHelper.perform(RefactoringExecutionHelper.java:191)
at org.eclipse.jdt.internal.ui.refactoring.RefactoringExecutionHelper.perform(RefactoringExecutionHelper.java:151)
at org.eclipse.jdt.internal.ui.refactoring.reorg.ReorgCopyStarter.run(ReorgCopyStarter.java:68)
at org.eclipse.jdt.internal.ui.refactoring.reorg.PasteAction$JavaElementAndResourcePaster.paste(PasteAction.java:1310)
at org.eclipse.jdt.internal.ui.refactoring.reorg.PasteAction.run(PasteAction.java:270)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:274)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:250)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:119)
at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:470)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:824)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:880)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:569)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:510)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:125)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1467)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1175)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1200)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1185)
at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1212)
at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:706)
at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:2837)
at org.eclipse.swt.widgets.Composite.gtk_key_press_event(Composite.java:703)
at org.eclipse.swt.widgets.Tree.gtk_key_press_event(Tree.java:1942)
at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1570)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:4594)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4191)
at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method)
at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:7603)
at org.eclipse.swt.widgets.Display.eventProc(Display.java:1185)
at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method)
at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:1860)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3110)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
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:368)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
at org.eclipse.equinox.launcher.Main.main(Main.java:1287)