title: JBoss deployment results in java.lang.UnsupportedClassVersionError: Bad version number in .class file
body: <p>When I am trying to hit my application in local machine I am getting a Http 404 error. When I see the console I am getting the below stack trace. Also the ear file is getting deployed in deployment folder but I am still not able to understand the problem. </p>
  
  <pre><code>Could not create deployment: file:/C:/Tools/jboss-4.2.2.GA/server/core-internal-dev/tmp/deploy/tmp9021jms-logging.jar-contents/jboss-service.xml
      org.jboss.deployment.DeploymentException: Unexpected error during load of: device.common.log4j.jmx.JMSAppenderInitializer, 
      msg=Bad version number in .class file; - nested throwable: (java.lang.ClassNotFoundException: Unexpected error during load of: device.common.log4j.jmx.JMSAppenderInitializer, msg=Bad version number in .class file)
      at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:196)
  at org.jboss.system.ServiceController.install(ServiceController.java:226)
  at sun.reflect.GeneratedMethodAccessor21.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:585)
  at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  at $Proxy4.install(Unknown Source)
  at org.jboss.deployment.SARDeployer.create(SARDeployer.java:249)
  at org.jboss.deployment.MainDeployer.create(MainDeployer.java:969)
  at org.jboss.deployment.MainDeployer.create(MainDeployer.java:959)
  at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:818)
  at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
  at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:585)
  at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  at $Proxy9.deploy(Unknown Source)
  at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
  at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
  at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
  at org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeploymentScanner.java:336)
  at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
  at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
  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.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
  at $Proxy0.start(Unknown Source)
  at org.jboss.system.ServiceController.start(ServiceController.java:417)
  at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:585)
  at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  at $Proxy4.start(Unknown Source)
  at org.jboss.deployment.SARDeployer.start(SARDeployer.java:302)
  at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
  at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
  at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
  at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:766)
  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.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  at $Proxy5.deploy(Unknown Source)
  at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:482)
  at org.jboss.system.server.ServerImpl.start(ServerImpl.java:362)
  at org.jboss.Main.boot(Main.java:200)
  at org.jboss.Main$1.run(Main.java:508)
  at java.lang.Thread.run(Thread.java:595)
      Caused by: java.lang.ClassNotFoundException: Unexpected error during load of: device.common.log4j.jmx.JMSAppenderInitializer,
      msg=Bad version number in .class file
  at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:560)
  at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:415)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
  at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:1204)
  at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:286)
  at org.jboss.system.ServiceCreator.install(ServiceCreator.java:193)
  at org.jboss.system.ServiceConfigurator.internalInstall(ServiceConfigurator.java:451)
  at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:171)
  ... 81 more
      Caused by: java.lang.UnsupportedClassVersionError: Bad version number in .class file
  at java.lang.ClassLoader.defineClass1(Native Method)
  at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
  at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
  at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
  at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
  at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
  at java.security.AccessController.doPrivileged(Native Method)
  at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
  at org.jboss.mx.loading.RepositoryClassLoader.findClassLocally(RepositoryClassLoader.java:682)
  at org.jboss.mx.loading.RepositoryClassLoader.findClass(RepositoryClassLoader.java:662)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
  at org.jboss.mx.loading.RepositoryClassLoader.loadClassLocally(RepositoryClassLoader.java:200)
  at org.jboss.mx.loading.ClassLoadingTask$ThreadTask.run(ClassLoadingTask.java:131)
  at org.jboss.mx.loading.LoadMgr3.nextTask(LoadMgr3.java:399)
  at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:527)
  ... 88 more
      21:49:07,247 ERROR [[/nenroll]] Exception starting filter EnrollInterceptingFilter
      java.lang.ClassNotFoundException: device.odm.nenrollment.webservlet.EnrollInterceptingFilter
  at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
  at java.security.AccessController.doPrivileged(Native Method)
  at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
  at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:249)
  at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397)
  at org.apache.catalina.core.ApplicationFilterConfig.&lt;init&gt;(ApplicationFilterConfig.java:108)
  at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3722)
  at org.apache.catalina.core.StandardContext.start(StandardContext.java:4367)
  at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:790)
  at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:770)
  at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:553)
  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.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:296)
  at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.apache.catalina.core.StandardContext.init(StandardContext.java:5312)
  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.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:296)
  at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.web.tomcat.service.TomcatDeployer.performDeployInternal(TomcatDeployer.java:301)
  at org.jboss.web.tomcat.service.TomcatDeployer.performDeploy(TomcatDeployer.java:104)
  at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java:375)
  at org.jboss.web.WebModule.startModule(WebModule.java:83)
  at org.jboss.web.WebModule.startService(WebModule.java:61)
  at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
  at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
  at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:585)
  at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
  at $Proxy0.start(Unknown Source)
  at org.jboss.system.ServiceController.start(ServiceController.java:417)
  at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:585)
  at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  at $Proxy44.start(Unknown Source)
  at org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java:466)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:585)
  at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
  at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
  at org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java:238)
  at org.jboss.wsf.container.jboss42.DeployerInterceptor.start(DeployerInterceptor.java:87)
  at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188)
  at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  at $Proxy45.start(Unknown Source)
  at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
  at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1015)
  at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
  at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
  at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:585)
  at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  at $Proxy9.deploy(Unknown Source)
  at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
  at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
  at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
  at org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeploymentScanner.java:336)
  at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
  at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
  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.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
  at $Proxy0.start(Unknown Source)
  at org.jboss.system.ServiceController.start(ServiceController.java:417)
  at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:585)
  at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  at $Proxy4.start(Unknown Source)
  at org.jboss.deployment.SARDeployer.start(SARDeployer.java:302)
  at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
  at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
  at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
  at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:766)
  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.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
  at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  at $Proxy5.deploy(Unknown Source)
  at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:482)
  at org.jboss.system.server.ServerImpl.start(ServerImpl.java:362)
  at org.jboss.Main.boot(Main.java:200)
  at org.jboss.Main$1.run(Main.java:508)
  at java.lang.Thread.run(Thread.java:595)
  </code></pre>