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java.lang.ClassNotFoundException in Eclipse using JDI Debug Model version3.17.0.v20201117-1145

I was using Eclipse 2020-12 with OpenJDK 14 under Windows 10 without problem until some days ago, now I can't open or use any function which use JDI due to a ClassNotFoundException (ie: setup run configurations, launch a server, open debug preferences, etc).
I don't remember doing nothing in particular and to be sure I've done a clean install with a brand new workspace: after the first run, leaving eclipse untouched, the problem reappear: simply opening eclipse, going to java debug preferences, closing eclipse, reopening it and doing the same thing trigger the error.
This is the exception stacktrace:
java.lang.NoClassDefFoundError: org/eclipse/jdt/debug/core/IJavaHotCodeReplaceListener
at java.base/java.lang.Class.getDeclaredConstructors0(Native Method)
at java.base/java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.base/java.lang.Class.getConstructor0(Unknown Source)
at java.base/java.lang.Class.getConstructor(Unknown Source)
at org.eclipse.osgi.internal.framework.BundleContextImpl.loadBundleActivator(BundleContextImpl.java:797)
at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:749)
at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:1011)
at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:365)
at org.eclipse.osgi.container.Module.doStart(Module.java:605)
at org.eclipse.osgi.container.Module.start(Module.java:468)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:506)
at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:117)
at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:572)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:346)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:398)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:477)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:171)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.osgi.internal.framework.EquinoxBundle.loadClass(EquinoxBundle.java:616)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:196)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:920)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:246)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:63)
at org.eclipse.ui.internal.WorkbenchPlugin.lambda$0(WorkbenchPlugin.java:287)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:74)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:285)
at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceNode.createPage(WorkbenchPreferenceNode.java:52)
at org.eclipse.jface.preference.PreferenceDialog.createPage(PreferenceDialog.java:1280)
at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.createPage(FilteredPreferenceDialog.java:338)
at org.eclipse.jface.preference.PreferenceDialog.showPage(PreferenceDialog.java:1166)
at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.showPage(FilteredPreferenceDialog.java:630)
at org.eclipse.jface.preference.PreferenceDialog$5.lambda$0(PreferenceDialog.java:660)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:74)
at org.eclipse.jface.preference.PreferenceDialog$5.selectionChanged(PreferenceDialog.java:657)
at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:823)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174)
at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:820)
at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1193)
at org.eclipse.swt.events.SelectionListener$1.widgetSelected(SelectionListener.java:84)
at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:263)
at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:258)
at org.eclipse.jface.util.OpenStrategy$1.lambda$1(OpenStrategy.java:428)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4001)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3629)
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.OpenPreferencesAction.run(OpenPreferencesAction.java:66)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:474)
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:4209)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1037)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4026)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3626)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1157)
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:644)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:551)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:156)
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:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
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(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
at org.eclipse.equinox.launcher.Main.run(Main.java:1461)
Caused by: java.lang.ClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.jdt.debug (397).
at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:126)
at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:572)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:346)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:398)
at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:41)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:473)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:171)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
... 79 more
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.jdt.internal.debug.core.JDIDebugPlugin.start() of bundle org.eclipse.jdt.debug.
at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:835)
at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:763)
at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:1011)
at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:365)
at org.eclipse.osgi.container.Module.doStart(Module.java:605)
at org.eclipse.osgi.container.Module.start(Module.java:468)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:506)
at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:117)
... 86 more
Caused by: java.lang.NoClassDefFoundError: com/sun/jdi/VMDisconnectedException
at org.eclipse.jdt.internal.debug.core.JDIDebugPlugin.start(JDIDebugPlugin.java:321)
at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:814)
at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:1)
at java.base/java.security.AccessController.doPrivileged(Unknown Source)
at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:806)
... 93 more
Caused by: java.lang.ClassNotFoundException: com.sun.jdi.VMDisconnectedException cannot be found by org.eclipse.jdt.debug_3.17.0.v20201117-1145
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:516)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:171)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
... 98 more
and there is the session data:
eclipse.buildId=4.18.0.I20201202-1800
java.version=14.0.1
java.vendor=AdoptOpenJDK
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=es_UY
Framework arguments: -product org.eclipse.epp.package.jee.product
Command-line arguments: -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.jee.product
It seems to me some kind of incompatibility between org.eclipse.jdt.debug version 3.17.0.v20201117-1145 and JDK. I'm going to do further tests, but if someone can point me to a solution it will be very appreciated.
Should I open a bug?
UPDATE: using OpenJDK 15 resolves the issue, so it's definitely something between latest Eclipse and OpenJDK 14.

Eclipse can't open JSP editor

Eclipse Platform - Version: 3.8.1, under Ubuntu 16.04
I have a webapp group of files I opened with a general Eclipse project. In here I got java and jsp files to work with.
I read that I could want to use another editor to better visualize and work with my code, so I downloaded the Marketplace and suggested plugins (Eclipse Web Developer Tools, Eclipse Plug-in Development Environment, Eclipse Java Web Developer Tools, Eclipse Java Development Tools) so I could switch to JAVA EE perspective and start the JSP Editor.
Done so, when I try to open any .jsp file I get the usual error others occurs in I paster below.
I suspect that Eclipse uses an uncorrect Java version, but can't find a way to check which it is. I read it should be in the file eclipse.ini in /usr/lib/eclipse but that file doesn't have references to anything similar (it should have a line with a -vm, which I have none).
I don't have ideas and hope some of you can enlight me!
Here is the Eclipse error:
Could not open the editor: The editor class could not be instantiated. This usually indicates a missing no-arg constructor or that the editor's class name was mistyped in plugin.xml.
java.lang.NoClassDefFoundError: org/eclipse/wst/sse/core/internal/IExecutionDelegate
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
at java.lang.Class.getConstructor0(Class.java:3075)
at java.lang.Class.newInstance(Class.java:412)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:184)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:268)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:264)
at org.eclipse.ui.internal.registry.EditorDescriptor.createEditor(EditorDescriptor.java:235)
at org.eclipse.ui.internal.EditorManager.createPart(EditorManager.java:875)
at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:609)
at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:289)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2949)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2854)
at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2846)
at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2797)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2793)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2777)
at org.eclipse.ui.actions.OpenWithMenu.openEditor(OpenWithMenu.java:338)
at org.eclipse.ui.actions.OpenWithMenu$2.handleEvent(OpenWithMenu.java:180)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1276)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3562)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3186)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Caused by: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.wst.sse.core (383).
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:122)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
at java.lang.Class.getConstructor0(Class.java:3075)
at java.lang.Class.newInstance(Class.java:412)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:184)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:268)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:264)
at org.eclipse.ui.internal.registry.EditorDescriptor.createEditor(EditorDescriptor.java:235)
at org.eclipse.ui.internal.EditorManager.createPart(EditorManager.java:875)
at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:609)
at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:315)
at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180)
at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270)
at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473)
at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1245)
at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1198)
at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1597)
at org.eclipse.ui.internal.PartStack.add(PartStack.java:493)
at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:103)
at org.eclipse.ui.internal.PartStack.add(PartStack.java:479)
at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:112)
at org.eclipse.ui.internal.EditorSashContainer.addEditor(EditorSashContainer.java:63)
at org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorAreaHelper.java:225)
at org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAreaHelper.java:213)
at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:808)
at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:707)
at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:666)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2946)
... 33 more
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.wst.sse.core.internal.SSECorePlugin.start() of bundle org.eclipse.wst.sse.core.
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
... 77 more
Caused by: java.lang.NoClassDefFoundError: com/ibm/icu/util/StringTokenizer
at org.eclipse.wst.sse.core.utils.StringUtils.unpack(StringUtils.java:734)
at org.eclipse.wst.sse.core.internal.tasks.TaskScanningJob.projectHasNotBeenFullyScanned(TaskScanningJob.java:129)
at org.eclipse.wst.sse.core.internal.tasks.TaskScanningJob.addProject(TaskScanningJob.java:95)
at org.eclipse.wst.sse.core.internal.tasks.TaskScanningScheduler.enqueue(TaskScanningScheduler.java:138)
at org.eclipse.wst.sse.core.internal.tasks.TaskScanningScheduler.startup(TaskScanningScheduler.java:118)
at org.eclipse.wst.sse.core.internal.SSECorePlugin.start(SSECorePlugin.java:90)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
... 83 more
Caused by: java.lang.ClassNotFoundException: com.ibm.icu.util.StringTokenizer
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:455)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 92 more

I suspect the Ubuntu build is just broken if the com.ibm.icu.util.StringTokenizer class isn't loading; it's provided by the com.ibm.icu bundle, which is provided in the plain Eclipse Platform download.

Just had to download the latest Eclipse version from official site and all worked out. Don't use apt packets since they point to an older and probably unsupported Eclipse with fewer features.

Eclipse editor won't open while opening pom.xml

I have just installed Ubuntu 15.10 and Eclipse.
As soon as I opened Eclipse, I went to :
Help -> Install New Software...
Then I set: Work with: Indigo Update Site - http://download.eclipse.org/releases/indigo/
I search for the plugin m2e and I have installed
General Purpuse Tools -> m2e - Maven integration for Eclipse
I have already tried to reinstall both plug-in m2e and Eclipse, but I still got the same error when I try to edit the pom.xml file.
Error:
Could not open the editor: The editor class could not be instantiated. This usually indicates a missing no-arg constructor or that the editor's class name was mistyped in plugin.xml.
Stack trace:
java.lang.NoClassDefFoundError: org/eclipse/wst/sse/core/internal/provisional/IStructuredModel
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2595)
at java.lang.Class.getConstructor0(Class.java:2895)
at java.lang.Class.newInstance(Class.java:354)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:184)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:268)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:264)
at org.eclipse.ui.internal.registry.EditorDescriptor.createEditor(EditorDescriptor.java:235)
at org.eclipse.ui.internal.EditorManager.createPart(EditorManager.java:875)
at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:609)
at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:315)
at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180)
at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270)
at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473)
at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1245)
at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1198)
at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1597)
at org.eclipse.ui.internal.PartStack.add(PartStack.java:493)
at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:103)
at org.eclipse.ui.internal.PartStack.add(PartStack.java:479)
at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:112)
at org.eclipse.ui.internal.EditorSashContainer.addEditor(EditorSashContainer.java:63)
at org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorAreaHelper.java:225)
at org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAreaHelper.java:213)
at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:808)
at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:707)
at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:666)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2946)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2854)
at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2846)
at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2797)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2793)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2777)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2768)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:655)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:614)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:360)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:167)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:249)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:228)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:275)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:251)
at org.eclipse.jdt.internal.ui.navigator.OpenAndExpand.run(OpenAndExpand.java:50)
at org.eclipse.ui.actions.RetargetAction.run(RetargetAction.java:221)
at org.eclipse.ui.navigator.CommonNavigatorManager$3.open(CommonNavigatorManager.java:185)
at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48)
at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:866)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:864)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1152)
at org.eclipse.ui.navigator.CommonViewer.handleOpen(CommonViewer.java:462)
at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1256)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:275)
at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:269)
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:309)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1276)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3562)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3186)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Caused by: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while
automatically activating bundle org.eclipse.wst.sse.core (312).
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:122)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2595)
at java.lang.Class.getConstructor0(Class.java:2895)
at java.lang.Class.newInstance(Class.java:354)
at org.eclipse.equinox.internal.ds.model.ServiceComponent.createInstance(ServiceComponent.java:493)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.createInstance(ServiceComponentProp.java:272)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:333)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
at org.eclipse.equinox.internal.ds.ServiceReg.getService(ServiceReg.java:53)
at org.eclipse.osgi.internal.serviceregistry.ServiceUse$1.run(ServiceUse.java:141)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.internal.serviceregistry.ServiceUse.getService(ServiceUse.java:139)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getService(ServiceRegistrationImpl.java:468)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.getService(ServiceRegistry.java:467)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.getService(BundleContextImpl.java:594)
at org.eclipse.m2e.core.internal.markers.MarkerUtils.addEditorHintMarkers(MarkerUtils.java:58)
at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.readMavenProject(ProjectRegistryManager.java:640)
at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:367)
at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:327)
at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:278)
at org.eclipse.m2e.core.internal.project.registry.MavenProjectManager.refresh(MavenProjectManager.java:58)
at org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:120)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.wst.sse.core.internal.SSECorePlugin.start() of bundle
org.eclipse.wst.sse.core.
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
... 43 more
Caused by: java.lang.NoClassDefFoundError: com/ibm/icu/util/StringTokenizer
at org.eclipse.wst.sse.core.utils.StringUtils.unpack(StringUtils.java:734)
at org.eclipse.wst.sse.core.internal.tasks.TaskScanningJob.projectHasNotBeenFullyScanned(TaskScanningJob.java:129)
at org.eclipse.wst.sse.core.internal.tasks.TaskScanningJob.addProject(TaskScanningJob.java:95)
at org.eclipse.wst.sse.core.internal.tasks.TaskScanningScheduler.enqueue(TaskScanningScheduler.java:138)
at org.eclipse.wst.sse.core.internal.tasks.TaskScanningScheduler.startup(TaskScanningScheduler.java:118)
at org.eclipse.wst.sse.core.internal.SSECorePlugin.start(SSECorePlugin.java:90)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
... 49 more
Caused by: java.lang.ClassNotFoundException: com.ibm.icu.util.StringTokenizer
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:455)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 58 more

Looks like your Eclipse version is old and it is not compatible with plugin, try to install updated version and see

Eclipse does not want to run [duplicate]

This question already has answers here:
Eclipse is not starting on Windows 7
(5 answers)
Closed 8 years ago.
Recently been given an error message when I was trying to run Eclipse.
The fault itself : An error has occurred. See the log file C:\Users.....metadata.log
First of all I have installed another version of eclipse in case it helps, but actually did not. They I figured out that I should delete the org.eclipse.core.resoursec but it did not also brought me to success.
I know that I can run it by -clean but it would be great to know what the problem actually is
Here is the log file
!ENTRY org.eclipse.osgi 4 0 2014-02-03 13:01:21.184
!MESSAGE An error occurred while automatically activating bundle org.eclipse.core.net (83).
!STACK 0
org.osgi.framework.BundleException: Exception in org.eclipse.core.internal.net.Activator.start() of bundle org.eclipse.core.net.
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.activateProxyService(IDEWorkbenchAdvisor.java:290)
at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.postStartup(IDEWorkbenchAdvisor.java:270)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2558)
at org.eclipse.ui.internal.Workbench.access$7(Workbench.java:2441)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:586)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
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:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Caused by: java.lang.NoClassDefFoundError: javax/crypto/BadPaddingException
at org.eclipse.equinox.internal.security.storage.SecurePreferencesMapper.open(SecurePreferencesMapper.java:101)
at org.eclipse.equinox.internal.security.storage.SecurePreferencesMapper.getDefault(SecurePreferencesMapper.java:46)
at org.eclipse.equinox.security.storage.SecurePreferencesFactory.getDefault(SecurePreferencesFactory.java:49)
at org.eclipse.core.internal.net.ProxyType.getNode(ProxyType.java:523)
at org.eclipse.core.internal.net.ProxyType.loadProxyAuth(ProxyType.java:533)
at org.eclipse.core.internal.net.ProxyType.createProxyData(ProxyType.java:138)
at org.eclipse.core.internal.net.ProxyType.getProxyData(ProxyType.java:127)
at org.eclipse.core.internal.net.PreferenceManager.migrateInstanceScopePreferences(PreferenceManager.java:292)
at org.eclipse.core.internal.net.PreferenceManager.migrate(PreferenceManager.java:260)
at org.eclipse.core.internal.net.ProxyManager.checkMigrated(ProxyManager.java:404)
at org.eclipse.core.internal.net.ProxyManager.initialize(ProxyManager.java:269)
at org.eclipse.core.internal.net.Activator.start(Activator.java:181)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
... 39 more
Caused by: java.lang.ClassNotFoundException: javax.crypto.BadPaddingException
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:455)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 54 more
Root exception:
java.lang.NoClassDefFoundError: javax/crypto/BadPaddingException
at org.eclipse.equinox.internal.security.storage.SecurePreferencesMapper.open(SecurePreferencesMapper.java:101)
at org.eclipse.equinox.internal.security.storage.SecurePreferencesMapper.getDefault(SecurePreferencesMapper.java:46)
at org.eclipse.equinox.security.storage.SecurePreferencesFactory.getDefault(SecurePreferencesFactory.java:49)
at org.eclipse.core.internal.net.ProxyType.getNode(ProxyType.java:523)
at org.eclipse.core.internal.net.ProxyType.loadProxyAuth(ProxyType.java:533)
at org.eclipse.core.internal.net.ProxyType.createProxyData(ProxyType.java:138)
at org.eclipse.core.internal.net.ProxyType.getProxyData(ProxyType.java:127)
at org.eclipse.core.internal.net.PreferenceManager.migrateInstanceScopePreferences(PreferenceManager.java:292)
at org.eclipse.core.internal.net.PreferenceManager.migrate(PreferenceManager.java:260)
at org.eclipse.core.internal.net.ProxyManager.checkMigrated(ProxyManager.java:404)
at org.eclipse.core.internal.net.ProxyManager.initialize(ProxyManager.java:269)
at org.eclipse.core.internal.net.Activator.start(Activator.java:181)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.activateProxyService(IDEWorkbenchAdvisor.java:290)
at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.postStartup(IDEWorkbenchAdvisor.java:270)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2558)
at org.eclipse.ui.internal.Workbench.access$7(Workbench.java:2441)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:586)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
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:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Caused by: java.lang.ClassNotFoundException: javax.crypto.BadPaddingException
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:455)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 54 more
> > > > !ENTRY org.eclipse.osgi 4 0 2014-02-03 13:01:21.233
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: An error occurred while automatically activating bundle org.eclipse.core.net (83).
at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.activateProxyService(IDEWorkbenchAdvisor.java:290)
at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.postStartup(IDEWorkbenchAdvisor.java:270)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2558)
at org.eclipse.ui.internal.Workbench.access$7(Workbench.java:2441)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:586)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
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:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)

it looks like a classpath issue from that stacktrace - more specifically, it seems to be looking for jce.jar and it is not able to find it. Check your classpath for jre lib value.

Try using a new workspace. To force the workspace window prompt you need to change the settings in \configuration.settings\org.eclipse.ui.ide.prefs and set SHOW_WORKSPACE_SELECTION_DIALOG to true
That will fix it is because your workspace meta data is corrupted.

Eclipse crashes on first run ( See the .log file) [duplicate]

This question already has answers here:
Eclipse is not starting on Windows 7
(5 answers)
Closed 9 years ago.
I'm having a problem running eclipse.
Everytime i try to set the workspace, the program crashes saying to check the log file.
I already tried to erase the workspace folder and run the application using the "- clean " command and no progress. Please help
Log File:
!SESSION 2013-09-05 18:09:23.056 -----------------------------------------------
eclipse.buildId=v22.0.5-757759
java.version=1.7.0_25
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=pt_PT
Framework arguments: -product com.android.ide.eclipse.adt.package.product
Command-line arguments: -os win32 -ws win32 -arch x86_64 -product com.android.ide.eclipse.adt.package.product
!ENTRY org.eclipse.osgi 4 0 2013-09-05 18:09:33.571
!MESSAGE An error occurred while automatically activating bundle org.eclipse.core.net (83).
!STACK 0
org.osgi.framework.BundleException: Exception in org.eclipse.core.internal.net.Activator.start() of bundle org.eclipse.core.net.
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.activateProxyService(IDEWorkbenchAdvisor.java:290)
at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.postStartup(IDEWorkbenchAdvisor.java:270)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2558)
at org.eclipse.ui.internal.Workbench.access$7(Workbench.java:2441)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:586)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
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:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Caused by: java.lang.NoClassDefFoundError: javax/crypto/BadPaddingException
at org.eclipse.equinox.internal.security.storage.SecurePreferencesMapper.open(SecurePreferencesMapper.java:101)
at org.eclipse.equinox.internal.security.storage.SecurePreferencesMapper.getDefault(SecurePreferencesMapper.java:46)
at org.eclipse.equinox.security.storage.SecurePreferencesFactory.getDefault(SecurePreferencesFactory.java:49)
at org.eclipse.core.internal.net.ProxyType.getNode(ProxyType.java:523)
at org.eclipse.core.internal.net.ProxyType.loadProxyAuth(ProxyType.java:533)
at org.eclipse.core.internal.net.ProxyType.createProxyData(ProxyType.java:138)
at org.eclipse.core.internal.net.ProxyType.getProxyData(ProxyType.java:127)
at org.eclipse.core.internal.net.PreferenceManager.migrateInstanceScopePreferences(PreferenceManager.java:292)
at org.eclipse.core.internal.net.PreferenceManager.migrate(PreferenceManager.java:260)
at org.eclipse.core.internal.net.ProxyManager.checkMigrated(ProxyManager.java:404)
at org.eclipse.core.internal.net.ProxyManager.initialize(ProxyManager.java:269)
at org.eclipse.core.internal.net.Activator.start(Activator.java:181)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
... 39 more
Caused by: java.lang.ClassNotFoundException: javax.crypto.BadPaddingException
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:455)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 54 more
Root exception:
java.lang.NoClassDefFoundError: javax/crypto/BadPaddingException
at org.eclipse.equinox.internal.security.storage.SecurePreferencesMapper.open(SecurePreferencesMapper.java:101)
at org.eclipse.equinox.internal.security.storage.SecurePreferencesMapper.getDefault(SecurePreferencesMapper.java:46)
at org.eclipse.equinox.security.storage.SecurePreferencesFactory.getDefault(SecurePreferencesFactory.java:49)
at org.eclipse.core.internal.net.ProxyType.getNode(ProxyType.java:523)
at org.eclipse.core.internal.net.ProxyType.loadProxyAuth(ProxyType.java:533)
at org.eclipse.core.internal.net.ProxyType.createProxyData(ProxyType.java:138)
at org.eclipse.core.internal.net.ProxyType.getProxyData(ProxyType.java:127)
at org.eclipse.core.internal.net.PreferenceManager.migrateInstanceScopePreferences(PreferenceManager.java:292)
at org.eclipse.core.internal.net.PreferenceManager.migrate(PreferenceManager.java:260)
at org.eclipse.core.internal.net.ProxyManager.checkMigrated(ProxyManager.java:404)
at org.eclipse.core.internal.net.ProxyManager.initialize(ProxyManager.java:269)
at org.eclipse.core.internal.net.Activator.start(Activator.java:181)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.activateProxyService(IDEWorkbenchAdvisor.java:290)
at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.postStartup(IDEWorkbenchAdvisor.java:270)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2558)
at org.eclipse.ui.internal.Workbench.access$7(Workbench.java:2441)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:586)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
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:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Caused by: java.lang.ClassNotFoundException: javax.crypto.BadPaddingException
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:455)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 54 more
!ENTRY org.eclipse.osgi 4 0 2013-09-05 18:09:33.627
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: An error occurred while automatically activating bundle org.eclipse.core.net (83).
at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.activateProxyService(IDEWorkbenchAdvisor.java:290)
at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.postStartup(IDEWorkbenchAdvisor.java:270)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2558)
at org.eclipse.ui.internal.Workbench.access$7(Workbench.java:2441)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:586)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
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:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)

Not an expert but I had a very similar experience.
My problem was that eclipse and jdk were not installed in their default locations. Once I corrected it, this worked.