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Build M20040908 (3.0.1) My steps: 1. Select a type in the Outline view. 2. Click the "New Class" button in the toolbar. 3. Entered a name for the new class (which is a subclass of the selected type). 4. Press Finish. 5. A dialog appeared saying something like "A problem occurred: null". The following was in the log: java.lang.reflect.InvocationTargetException at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:284) at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:752) at org.eclipse.jdt.internal.ui.wizards.NewElementWizard.performFinish(NewElementWizard.java: 115) at org.eclipse.jdt.internal.ui.wizards.NewClassCreationWizard. performFinish(NewClassCreationWizard.java:63) at org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:609) at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:305) at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:506) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:89) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:954) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2595) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2298) at org.eclipse.jface.window.Window.runEventLoop(Window.java:668) at org.eclipse.jface.window.Window.open(Window.java:648) at org.eclipse.jdt.internal.ui.wizards.AbstractOpenWizardAction.run(AbstractOpenWizardAction. java:159) at org.eclipse.jdt.internal.ui.wizards.NewTypeDropDownAction.run(NewTypeDropDownAction. java:95) at org.eclipse.jdt.internal.ui.wizards.NewTypeDropDownAction.run(NewTypeDropDownAction. java:145) at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:276) at org.eclipse.ui.internal.WWinPluginAction.runWithEvent(WWinPluginAction.java:206) at org.eclipse.jface.action.ActionContributionItem. handleWidgetSelection(ActionContributionItem.java:915) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:866) at org.eclipse.jface.action.ActionContributionItem$8.handleEvent(ActionContributionItem.java: 824) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:954) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2595) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2298) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141) at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96) at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.eclipse.core.launcher.Main.basicRun(Main.java:185) at org.eclipse.core.launcher.Main.run(Main.java:704) at org.eclipse.core.launcher.Main.main(Main.java:688) Caused by: java.lang.NumberFormatException: null at java.lang.Integer.parseInt(Integer.java:436) at java.lang.Integer.parseInt(Integer.java:518) at org.eclipse.jdt.internal.formatter.DefaultCodeFormatterOptions. set(DefaultCodeFormatterOptions.java:481) at org.eclipse.jdt.internal.formatter.DefaultCodeFormatterOptions. <init>(DefaultCodeFormatterOptions.java:227) at org.eclipse.jdt.internal.formatter.DefaultCodeFormatter.<init>(DefaultCodeFormatter.java:49) at org.eclipse.jdt.internal.formatter.DefaultCodeFormatter.<init>(DefaultCodeFormatter.java:61) at org.eclipse.jdt.core.ToolFactory.createCodeFormatter(ToolFactory.java:96) at org.eclipse.jdt.internal.corext.util.CodeFormatterUtil.format2(CodeFormatterUtil.java:149) at org.eclipse.jdt.internal.corext.util.CodeFormatterUtil.format2(CodeFormatterUtil.java:153) at org.eclipse.jdt.internal.corext.codemanipulation.ImportsStructure. useSpaceBetweenGroups(ImportsStructure.java:793) at org.eclipse.jdt.internal.corext.codemanipulation.ImportsStructure. getResultingEdits(ImportsStructure.java:682) at org.eclipse.jdt.internal.corext.codemanipulation.ImportsStructure.create(ImportsStructure. java:587) at org.eclipse.jdt.ui.wizards.NewTypeWizardPage$ImportsManager. create(NewTypeWizardPage.java:151) at org.eclipse.jdt.ui.wizards.NewTypeWizardPage.createType(NewTypeWizardPage.java:1489) at org.eclipse.jdt.internal.ui.wizards.NewClassCreationWizard. finishPage(NewClassCreationWizard.java:55) at org.eclipse.jdt.internal.ui.wizards.NewElementWizard$2.run(NewElementWizard.java:108) at org.eclipse.jdt.internal.core.BatchOperation.executeOperation(BatchOperation.java:34) at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:700) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1673) at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:3246) at org.eclipse.jdt.internal.ui.actions.WorkbenchRunnableAdapter. run(WorkbenchRunnableAdapter.java:65) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:101) Root exception: java.lang.NumberFormatException: null at java.lang.Integer.parseInt(Integer.java:436) at java.lang.Integer.parseInt(Integer.java:518) at org.eclipse.jdt.internal.formatter.DefaultCodeFormatterOptions. set(DefaultCodeFormatterOptions.java:481) at org.eclipse.jdt.internal.formatter.DefaultCodeFormatterOptions. <init>(DefaultCodeFormatterOptions.java:227) at org.eclipse.jdt.internal.formatter.DefaultCodeFormatter.<init>(DefaultCodeFormatter.java:49) at org.eclipse.jdt.internal.formatter.DefaultCodeFormatter.<init>(DefaultCodeFormatter.java:61) at org.eclipse.jdt.core.ToolFactory.createCodeFormatter(ToolFactory.java:96) at org.eclipse.jdt.internal.corext.util.CodeFormatterUtil.format2(CodeFormatterUtil.java:149) at org.eclipse.jdt.internal.corext.util.CodeFormatterUtil.format2(CodeFormatterUtil.java:153) at org.eclipse.jdt.internal.corext.codemanipulation.ImportsStructure. useSpaceBetweenGroups(ImportsStructure.java:793) at org.eclipse.jdt.internal.corext.codemanipulation.ImportsStructure. getResultingEdits(ImportsStructure.java:682) at org.eclipse.jdt.internal.corext.codemanipulation.ImportsStructure.create(ImportsStructure. java:587) at org.eclipse.jdt.ui.wizards.NewTypeWizardPage$ImportsManager. create(NewTypeWizardPage.java:151) at org.eclipse.jdt.ui.wizards.NewTypeWizardPage.createType(NewTypeWizardPage.java:1489) at org.eclipse.jdt.internal.ui.wizards.NewClassCreationWizard. finishPage(NewClassCreationWizard.java:55) at org.eclipse.jdt.internal.ui.wizards.NewElementWizard$2.run(NewElementWizard.java:108) at org.eclipse.jdt.internal.core.BatchOperation.executeOperation(BatchOperation.java:34) at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:700) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1673) at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:3246) at org.eclipse.jdt.internal.ui.actions.WorkbenchRunnableAdapter. run(WorkbenchRunnableAdapter.java:65) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:101)
Once I got into this state, it turns out that I couldn't create any new classes, regardless of the supertype. I was getting the same exception even if I created a new project and tried to add an empty type. After I restarted Eclipse, I was able to create new types again.
moving to jdt.core. The fomatter is called with a option map optained with javaProject.getOptions(true)
I will investigate.
What VM are you using? All calls to Integer.parseInt(...) are inside a try/catch(NumberFormatException).
java version "1.4.2_01" Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_01-b06) Java HotSpot(TM) Client VM (build 1.4.2_01-b06, mixed mode)
Probably just a VM bug. I've now upgraded my workstation.
