Andreas W Andreas W - 6 months ago 46
Linux Question

Eclipse cant create new java projects

I am running Eclipse 4.5.2 (Mars) on openSUSE Tumbleweed. Unfortunately I cannot create Java projects because after clicking on new->Java Projects, nothing happens...

I already reinstalled eclipse, cleared the metadata, removed the user data from my home directory. Nothing worked.

I just get the following error message in my log:
name= unhandled event loop exception; plugin= org.eclipse.ui;

Exception Stack Trace:

ava.lang.NullPointerException
at org.eclipse.swt.widgets.TabFolder.gtk_switch_page(TabFolder.java:570)
at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2009)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4723)
at org.eclipse.swt.internal.gtk.OS._gtk_widget_show(Native Method)
at org.eclipse.swt.internal.gtk.OS.gtk_widget_show(OS.java:14774)
at org.eclipse.swt.widgets.TabFolder.createItem(TabFolder.java:311)
at org.eclipse.swt.widgets.TabItem.createWidget(TabItem.java:123)
at org.eclipse.swt.widgets.TabItem.<init>(TabItem.java:75)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.BuildPathsBlock.createControl(BuildPathsBlock.java:228)
at org.eclipse.jdt.ui.wizards.JavaCapabilityConfigurationPage.createControl(JavaCapabilityConfigurationPage.java:162)
at org.eclipse.jface.wizard.Wizard.createPageControls(Wizard.java:175)
at org.eclipse.jface.wizard.WizardDialog.createPageControls(WizardDialog.java:705)
at org.eclipse.jface.wizard.WizardDialog.createContents(WizardDialog.java:597)
at org.eclipse.jface.window.Window.create(Window.java:430)
at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1096)
at org.eclipse.ui.internal.actions.NewWizardShortcutAction.run(NewWizardShortcutAction.java:123)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4481)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1329)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3819)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3430)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:694)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
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:498)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
at org.eclipse.equinox.launcher.Main.main(Main.java:1488)


Stack Trace

eclipse.buildId=4.5.2.M20160212-1500
java.version=1.8.0_77
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=de_DE
Command-line arguments: -data file:/home/andi/workspace/eclipse/ -os linux -ws gtk -arch x86_64


Thank you so much for your help!

Answer

You haven't specified the Desktop environment you are running Eclipse on (KDE, GNOME, LXDE), anyway Eclipse seems not to be very compatible with the new GTK3.

I solved the issue forcing eclipse to work with the GTK2, you can do that adding the following two lines in your eclipse.ini file :

--launcher.GTK_version
2

Make sure you add the two lines above the --launcher.appendVmargs line.