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I'm getting an NPE when trying to rename a method in the Java editor What steps will reproduce the problem? 1. Open Java Editor 2. Select a java method 3. Press cmd+shift+R -> error dialog appears, rename does not complete normally I should also mention that it started happening around the time I installed the new version of Scala IDE, but it seems unrelated to me. -- Error Details -- Date: Thu Aug 05 11:51:08 CEST 2010 Message: java.lang.NullPointerException Severity: Error Product: Eclipse 1.3.0.20100617-0520 (org.eclipse.epp.package.java.product) Plugin: org.eclipse.ui Session Data: eclipse.buildId=I20100608-0911 java.version=1.6.0_20 java.vendor=Apple Inc. BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US Framework arguments: -product org.eclipse.epp.package.java.product -keyring /Users/maciejbias/.eclipse_keyring -showlocation Command-line arguments: -os macosx -ws cocoa -arch x86_64 -product org.eclipse.epp.package.java.product -keyring /Users/maciejbias/.eclipse_keyring -showlocation Exception Stack Trace: java.lang.NullPointerException at org.eclipse.jdt.internal.ui.refactoring.actions.RenameJavaElementAction.run_aroundBody1$advice(RenameJavaElementAction.java:35) at org.eclipse.jdt.internal.ui.refactoring.actions.RenameJavaElementAction.run(RenameJavaElementAction.java:1) at org.eclipse.jdt.internal.ui.refactoring.actions.RenameJavaElementAction.doRun(RenameJavaElementAction.java:148) at org.eclipse.jdt.internal.ui.refactoring.actions.RenameJavaElementAction.run(RenameJavaElementAction.java:129) at org.eclipse.jdt.ui.actions.RenameAction.run(RenameAction.java:115) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:278) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:250) at org.eclipse.jface.action.Action.runWithEvent(Action.java:498) at org.eclipse.ui.commands.ActionHandler.execute(ActionHandler.java:185) at org.eclipse.ui.internal.handlers.LegacyHandlerWrapper.execute(LegacyHandlerWrapper.java:109) 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:468) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:786) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:885) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:567) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:508) at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:123) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1031) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:3775) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1367) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1390) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1375) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1404) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1400) at org.eclipse.swt.widgets.Canvas.sendKeyEvent(Canvas.java:416) at org.eclipse.swt.widgets.Composite.keyDown(Composite.java:594) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4978) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method) at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:220) at org.eclipse.swt.widgets.Widget.windowSendEvent(Widget.java:1943) at org.eclipse.swt.widgets.Shell.windowSendEvent(Shell.java:2008) at org.eclipse.swt.widgets.Display.windowProc(Display.java:5040) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method) at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:4582) at org.eclipse.swt.widgets.Display.applicationProc(Display.java:4659) at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method) at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:115) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3274) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) 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:369) 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:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
(In reply to comment #0) > I'm getting an NPE when trying to rename a method in the Java editor > > What steps will reproduce the problem? > 1. Open Java Editor > 2. Select a java method > 3. Press cmd+shift+R > -> error dialog appears, rename does not complete normally Please provide a specific testcase where the exception occurs. Moving to JDT/UI.
Created attachment 175916 [details] Installation details Attached are the installation details from the "About Eclipse" box (with bottom section removed).
It turns out it was in fact caused by Scala IDE's JDT weaving feature that was bundled with Scala IDE. Reading through the bug report on Scala IDE's bugtracker releaved that the root cause is bug #321829. Therefore I'm marking it as duplicate of it. Scala IDE bug ticket link: https://www.assembla.com/spaces/scala-ide/tickets/1000075-jdt-weaving-used-in-sdt-for-eclipse-3-6-breaks-java-refactoring *** This bug has been marked as a duplicate of bug 321829 ***