java.lang.UnsupportedClassVersionError: org/python/pydev/plugin/PydevPlugin (Unsupported major.minor version 49.0)

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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.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.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.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.BundleLoader.findLocalClass(BundleLoader.java:337)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:389)
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.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.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:240)
at org.eclipse.jface.preference.PreferenceDialog$8.selectionChanged(PreferenceDialog.java:638)
at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044)
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.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.jface.window.Window.runEventLoop(Window.java:809)
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.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.ui.internal.Workbench.runEventLoop(Workbench.java:1699)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
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)

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