Cant create new FXML File in Eclipse

Question

When Im trying create a new FXML File in Eclipse (File -> New -> Other -> JavaFX - new FXML Document -> Next) nothing happens. It doesnt create a File. Same Problem when I try to create FXGraph or JavaFX HTML Template whatever those are. After I try to create I get this Error Message :

eclipse.buildId=4.26.0.20221201-1200
java.version=17.0.5
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=de_DE
Framework arguments:  -product org.eclipse.epp.package.java.product
Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.java.product

org.eclipse.ui
Error
Sun Dec 11 06:12:31 CET 2022
Unhandled event loop exception

java.lang.NoClassDefFoundError: org/eclipse/jface/databinding/swt/WidgetProperties
    at org.eclipse.fx.ide.ui.wizards.AbstractJDTElementPage.createControl(AbstractJDTElementPage.java:109)
    at org.eclipse.jface.wizard.Wizard.createPageControls(Wizard.java:178)
    at org.eclipse.jface.wizard.WizardDialog.createPageControls(WizardDialog.java:744)
    at org.eclipse.jface.wizard.WizardDialog.setWizard(WizardDialog.java:1182)
    at org.eclipse.jface.wizard.WizardDialog.updateForPage(WizardDialog.java:1235)
    at org.eclipse.jface.wizard.WizardDialog.lambda$3(WizardDialog.java:1223)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:74)
    at org.eclipse.jface.wizard.WizardDialog.showPage(WizardDialog.java:1223)
    at org.eclipse.jface.wizard.WizardDialog.nextPressed(WizardDialog.java:918)
    at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:469)
    at org.eclipse.jface.dialogs.Dialog.lambda$0(Dialog.java:619)
    at org.eclipse.swt.events.SelectionListener$1.widgetSelected(SelectionListener.java:84)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:252)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4256)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4054)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3642)
    at org.eclipse.jface.window.Window.runEventLoop(Window.java:823)
    at org.eclipse.jface.window.Window.open(Window.java:799)
    at org.eclipse.ui.internal.handlers.WizardHandler$New.executeHandler(WizardHandler.java:263)
    at org.eclipse.ui.internal.handlers.WizardHandler.execute(WizardHandler.java:283)
    at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:283)
    at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:97)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58)
    at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:317)
    at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:251)
    at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:173)
    at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:156)
    at org.eclipse.core.commands.Command.executeWithChecks(Command.java:488)
    at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:485)
    at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:213)
    at org.eclipse.ui.internal.handlers.LegacyHandlerService.executeCommand(LegacyHandlerService.java:389)
    at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:142)
    at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:580)
    at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:414)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4256)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4054)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3642)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1046)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:643)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:550)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:171)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:596)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1467)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1440)
Caused by: java.lang.ClassNotFoundException: org.eclipse.jface.databinding.swt.WidgetProperties cannot be found by org.eclipse.fx.ide.ui_3.8.0.202204150904
    ... 67 more

I tried to reinstall JavaFX and SceneBuilder but it changed nothing. Reinstalling Eclipse Software also wasnt helping.

Answer 1

This issue has been fixed with e(fx)clipse 3.10.0 (see commit 9a01848). For some reason, the version available on the Eclipse Marketplace is out of date by at least two versions already, as of writing. I'd also rather not downgrade my current version of Eclipse just to make this work.

You can get the latest version by using the nightly software site instead:

• Go to Help > Install New Software
• Click the Add... button beside Manage....
• A dialog titled Add Repository will appear, asking for a name and location.
  • For the name field, you can insert something like e(fx)clipse nightly.
  • For the location field, insert https://download.eclipse.org/efxclipse/updates-nightly/repository/
  • Click Add.
• Once done, the following list should appear:
• Check all the items and click Next.
• The next window will show you a list of items to be installed, just click Finish and wait for it to complete the installation.

Answer 2

It looks like e(fx)clipse hasn't been updated for 2022-12, which removed some DataBinding APIs.

You can open an issue at https://github.com/eclipse-efx/efxclipse-eclipse/issues, but if you can work up a pull request to fix it, that'll probably move things along far more quickly.