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java.lang.NoClassDefFoundError: 	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)	at java.lang.reflect.Constructor.newInstance(Constructor.java:494)	at java.lang.Class.newInstance0(Class.java:350)	at java.lang.Class.newInstance(Class.java:303)	at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:136)	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:962)	at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:317)	at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:256)	at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.preFindLocalClass(EclipseLazyStarter.java:86)	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:409)	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:188)	at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:334)	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:386)	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:347)	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83)	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)	at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:278)	at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227)	at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1245)	at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:147)	at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:759)	at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)	at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51)	at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:242)	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)	at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:238)	at org.eclipse.ui.internal.PluginAction.createDelegate(PluginAction.java:120)	at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:225)	at org.eclipse.ui.internal.WWinPluginAction.runWithEvent(WWinPluginAction.java:229)	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:539)	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:488)	at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:441)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1085)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3166)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2842)	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1914)	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:419)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)	at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:95)	at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)	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:585)	at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)	at org.eclipse.core.launcher.Main.basicRun(Main.java:280)	at org.eclipse.core.launcher.Main.run(Main.java:977)	at org.eclipse.core.launcher.Main.main(Main.java:952)