è un errore run-time..
Ho provato ad inserire l'apertura dell' XML all'interno della classe Action ed ecco cosa avviene



Exception in thread "Thread-1" java.lang.NoClassDefFoundError: org/jdom/JDOMException
at bestemmiator.ApplicationActionBarAdvisor.makeActio ns(ApplicationActionBarAdvisor.java:45)
at org.eclipse.ui.application.ActionBarAdvisor.fillAc tionBars(ActionBarAdvisor.java:147)
at org.eclipse.ui.internal.WorkbenchWindow.fillAction Bars(WorkbenchWindow.java:3301)
at org.eclipse.ui.internal.WorkbenchWindow.<init>(Wor kbenchWindow.java:380)
at org.eclipse.ui.internal.Workbench.newWorkbenchWind ow(Workbench.java:1725)
at org.eclipse.ui.internal.Workbench.access$14(Workbe nch.java:1724)
at org.eclipse.ui.internal.Workbench$18.runWithExcept ion(Workbench.java:1001)
at org.eclipse.ui.internal.StartupThreading$StartupRu nnable.run(StartupThreading.java:31)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableL ock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessa ges(Synchronizer.java:129)
at org.eclipse.swt.widgets.Display.runAsyncMessages(D isplay.java:3659)
at org.eclipse.swt.widgets.Display.readAndDispatch(Di splay.java:3296)
at org.eclipse.ui.application.WorkbenchAdvisor.openWi ndows(WorkbenchAdvisor.java:801)
at org.eclipse.ui.internal.Workbench$25.runWithExcept ion(Workbench.java:1342)
at org.eclipse.ui.internal.StartupThreading$StartupRu nnable.run(StartupThreading.java:31)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableL ock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessa ges(Synchronizer.java:129)
at org.eclipse.swt.widgets.Display.runAsyncMessages(D isplay.java:3659)
at org.eclipse.swt.widgets.Display.readAndDispatch(Di splay.java:3296)
at org.eclipse.ui.internal.Workbench.runUI(Workbench. java:2309)
at org.eclipse.ui.internal.Workbench.access$4(Workben ch.java:2219)
at org.eclipse.ui.internal.Workbench$4.run(Workbench. java:466)
at org.eclipse.core.databinding.observable.Realm.runW ithDefault(Realm.java:289)
at org.eclipse.ui.internal.Workbench.createAndRunWork bench(Workbench.java:461)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(Pl atformUI.java:149)
at bestemmiator.Application.start(Application.java:20 )
at org.eclipse.equinox.internal.app.EclipseAppHandle. run(EclipseAppHandle.java:169)
at org.eclipse.core.runtime.internal.adaptor.EclipseA ppLauncher.runApplication(EclipseAppLauncher.java: 106)
at org.eclipse.core.runtime.internal.adaptor.EclipseA ppLauncher.start(EclipseAppLauncher.java:76)
at org.eclipse.core.runtime.adaptor.EclipseStarter.ru n(EclipseStarter.java:363)
at org.eclipse.core.runtime.adaptor.EclipseStarter.ru n(EclipseStarter.java:176)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework( Main.java:508)
at org.eclipse.equinox.launcher.Main.basicRun(Main.ja va:447)
at org.eclipse.equinox.launcher.Main.run(Main.java:11 73)
at org.eclipse.equinox.launcher.Main.main(Main.java:1 148)
Caused by: java.lang.ClassNotFoundException: org.jdom.JDOMException
at java.lang.ClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.osgi.framework.internal.core.BundleLoa der.findClassInternal(BundleLoader.java:429)
at org.eclipse.osgi.framework.internal.core.BundleLoa der.findClass(BundleLoader.java:369)
at org.eclipse.osgi.framework.internal.core.BundleLoa der.findClass(BundleLoader.java:357)
at org.eclipse.osgi.internal.baseadaptor.DefaultClass Loader.loadClass(DefaultClassLoader.java:83)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
... 39 more