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    via Stack Overflow by ERJAN

    This exception occurs when using an older version of java. Mainly when trying to run a jar compiled with a newer Java version in an older Java version. We can avoid this issue by executing the jar in the same version which it was compiled.

Solutions on the web

via pydev by nobody
, 1 year ago
org/python/pydev/plugin/PydevPlugin (Unsupported major.minor version 49.0)
via Google Groups by Groty, 2 years ago
org/cfeclipse/cfml/CFMLPlugin (Unsupported major.minor version 49.0)
via easyjf.com by Unknown author, 2 years ago
via Coderanch by Tonya Johnson, 1 year ago
com/wwe/apps/app1099/common/util/filters/LoginFilter (Unsupported major.minor version 48.0)
via coderanch.com by Unknown author, 2 years ago
trivera/j2ee/web/servlets/hello/HelloServlet (Unsupported major.minor version )
via Coderanch by Henry Haverstock, 1 year ago
trivera/j2ee/web/servlets/hello/HelloServlet (Unsupported major.minor version 50.0)
java.lang.UnsupportedClassVersionError: org/python/pydev/plugin/PydevPlugin (Unsupported major.minor version 49.0)	at java.lang.ClassLoader.defineClass0(Native Method)	at java.lang.ClassLoader.defineClass(ClassLoader.java:539)	at org.eclipse.osgi.framework.adaptor.core.DefaultClassLoader.defineClass(DefaultClassLoader.java:370)	at org.eclipse.core.runtime.adaptor.EclipseClassLoader.defineClass(EclipseClassLoader.java:227)	at org.eclipse.osgi.framework.adaptor.core.DefaultClassLoader.findClassImpl(DefaultClassLoader.java:343)	at org.eclipse.osgi.framework.adaptor.core.DefaultClassLoader.findClass(DefaultClassLoader.java:235)	at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.findLocalClass(AbstractClassLoader.java:183)	at org.eclipse.core.runtime.adaptor.EclipseClassLoader.basicFindLocalClass(EclipseClassLoader.java:141)	at org.eclipse.core.runtime.adaptor.EclipseClassLoader.findLocalClass(EclipseClassLoader.java:82)	at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:337)	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:389)	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:350)	at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass(AbstractClassLoader.java:78)	at java.lang.ClassLoader.loadClass(ClassLoader.java:235)	at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:275)	at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227)	at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:144)	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:965)	at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:321)	at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:266)	at org.eclipse.core.runtime.adaptor.EclipseClassLoader.findLocalClass(EclipseClassLoader.java:116)	at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:337)	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:389)	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:350)	at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass(AbstractClassLoader.java:78)	at java.lang.ClassLoader.loadClass(ClassLoader.java:235)	at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:275)	at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227)	at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1259)	at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:152)	at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:142)	at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:129)	at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:48)	at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:240)	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)	at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:236)	at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceNode.createPage(WorkbenchPreferenceNode.java:46)	at org.eclipse.jface.preference.PreferenceDialog.createPage(PreferenceDialog.java:1211)	at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.createPage(FilteredPreferenceDialog.java:238)	at org.eclipse.jface.preference.PreferenceDialog.showPage(PreferenceDialog.java:1114)	at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.showPage(FilteredPreferenceDialog.java:351)	at org.eclipse.jface.preference.PreferenceDialog$8.selectionChanged(PreferenceDialog.java:638)	at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:763)	at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044)	at org.eclipse.core.runtime.Platform.run(Platform.java:783)	at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44)	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:148)	at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:761)	at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1042)	at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1062)	at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:231)	at org.eclipse.jface.util.OpenStrategy.access$4(OpenStrategy.java:226)	at org.eclipse.jface.util.OpenStrategy$3.run(OpenStrategy.java:392)	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:123)	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:2844)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2575)	at org.eclipse.jface.window.Window.runEventLoop(Window.java:809)	at org.eclipse.jface.window.Window.open(Window.java:787)	at org.eclipse.ui.internal.OpenPreferencesAction.run(OpenPreferencesAction.java:66)	at org.eclipse.jface.action.Action.runWithEvent(Action.java:996)	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:538)	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:488)	at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:400)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1021)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2867)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2572)	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)	at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103)	at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)	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:324)	at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)	at org.eclipse.core.launcher.Main.basicRun(Main.java:278)	at org.eclipse.core.launcher.Main.run(Main.java:973)	at org.eclipse.core.launcher.Main.main(Main.java:948)