Erro ao criar um servlet no Eclipse

Quando temto criar um servlet no meu eclipse aparece a seguinte mensagem:

“An error has occurred qhen Create Servlet finished.”

Quando cliquei em detalhes foi exibida a seguinte excessao

java.lang.UnsupportedClassVersionError: org/eclipse/jst/j2ee/web/ServletTemplate : Unsupported major.minor version 51.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:638)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:143)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:281)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:74)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:216)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:209)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:324)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:269)
	at org.eclipse.jst.j2ee.internal.project.WTPJETEmitter.loadClass(WTPJETEmitter.java:346)
	at org.eclipse.jst.j2ee.internal.project.WTPJETEmitter.initialize(WTPJETEmitter.java:228)
	at org.eclipse.jst.j2ee.internal.project.WTPJETEmitter.<init>(WTPJETEmitter.java:108)
	at org.eclipse.jst.j2ee.internal.web.operations.NewServletClassOperation.generateTemplateSource(NewServletClassOperation.java:351)
	at org.eclipse.jst.j2ee.internal.web.operations.NewServletClassOperation.generateUsingTemplates(NewServletClassOperation.java:245)
	at org.eclipse.jst.j2ee.internal.web.operations.NewServletClassOperation.doExecute(NewServletClassOperation.java:180)
	at org.eclipse.jst.j2ee.internal.web.operations.NewServletClassOperation.execute(NewServletClassOperation.java:423)
	at org.eclipse.jst.j2ee.internal.web.operations.AddServletOperation.createServletClass(AddServletOperation.java:144)
	at org.eclipse.jst.j2ee.internal.web.operations.AddServletOperation.doExecute(AddServletOperation.java:120)
	at org.eclipse.jst.j2ee.internal.web.operations.AddServletOperation$1.run(AddServletOperation.java:426)
	at org.eclipse.jst.jee.model.internal.JEE5ModelProvider.modify(JEE5ModelProvider.java:201)
	at org.eclipse.jst.j2ee.internal.web.operations.AddServletOperation.execute(AddServletOperation.java:432)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl$1.run(DataModelPausibleOperationImpl.java:376)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1797)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.runOperation(DataModelPausibleOperationImpl.java:401)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.runOperation(DataModelPausibleOperationImpl.java:352)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.doExecute(DataModelPausibleOperationImpl.java:242)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.executeImpl(DataModelPausibleOperationImpl.java:214)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.cacheThreadAndContinue(DataModelPausibleOperationImpl.java:89)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.execute(DataModelPausibleOperationImpl.java:202)
	at org.eclipse.wst.common.frameworks.internal.datamodel.ui.DataModelWizard$1$CatchThrowableRunnableWithProgress.run(DataModelWizard.java:211)
	at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:369)
	at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:313)
	at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:934)
	at org.eclipse.wst.common.frameworks.internal.datamodel.ui.DataModelWizard.runOperations(DataModelWizard.java:220)
	at org.eclipse.wst.common.frameworks.internal.datamodel.ui.DataModelWizard.performFinish(DataModelWizard.java:178)
	at org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:742)
	at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:373)
	at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:616)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:227)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1101)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3319)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2971)
	at org.eclipse.jface.window.Window.runEventLoop(Window.java:820)
	at org.eclipse.jface.window.Window.open(Window.java:796)
	at org.eclipse.ui.internal.navigator.wizards.WizardShortcutAction.run(WizardShortcutAction.java:94)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:546)
	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:490)
	at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:402)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1101)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3319)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2971)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
	at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:169)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
	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:623)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:508)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:447)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1173)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1148)

Desde já agradeço pela ajuda!

Veja qual versão do Java vc esta usando?, é possível trocar a versão que vc precisa compilar em:

No menu: Window->Preferences->Jaca->Compiler-> na combo Compiler compilance level

O seu container deve suportar uma versão do java mais antiga do que a 5, baixe a versão mais atual do Tomcat que já suporta Java 6 para obter os novos recursos da linguagem!

A versão do apache que estou usando é a 6.0.14.

A versao do java eh
java version “1.7.0”
IcedTea Runtime Environment (build 1.7.0-b21)
IcedTea 64-Bit Server VM (build 1.7.0-b21, mixed mode)

Quanto a esse caminho

No menu: Window->Preferences->Jaca->Compiler-> na combo Compiler compilance level

quando chego em java nao tem nenhuma opcao Compiler. Mas creio que vc esta se referindo a quando se clica com o botão direito no projeto->Properties->Java Compiler . A primeira coisa q tentei foi mudar isso mas infelismente nenhuma das opcoes resolveu o problema. :frowning:

cara… de uma olhada no seu buid path,
creio q esteja la seu problema

veja se vc anexou as jars necessárias ao seu projeto.

pra mim tbm tava dando o mesmo erro
se voce usa o tomcat 6 e JDK 7
faça o seguinte
no eclipse va em project>properties>Java Compiler em JDK compilancer escolha a JDK 5
funfou aki
abç