i visist
http://locahost:9080/jforum
then i get the error message:
Error 500: java.lang.LinkageError: LinkageError while defining class: net.jforum.InstallServlet Could not be defined due to: net/jforum/InstallServlet (Unsupported major.minor version 49.0) This is often caused by having a class defined at multiple locations within the classloader hierarchy. Other potential causes include compiling against an older or newer version of the class that has an incompatible method signature. Dumping the current context classloader hierarchy: ==> indicates defining classloader ==>[0] com.ibm.ws.classloader.CompoundClassLoader@4946c499 Local ClassPath: C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\classes;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\activation.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\bsh-2.0b4.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\c3p0-0.9.0.2.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\commons-io-1.1.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\commons-logging.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\concurrent.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\dwr-1.1-RC1.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\freemarker-2.3.4.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\hsqldb-1.8.0.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\htmlparser-1.5.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\jcaptcha-all-1.0-RC2.0.1.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\jmxri.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\junit.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\log4j-1.2.12.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\mail.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\mysql-connector-java-3.1.12-bin.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\ojdbc14.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\postgresql-8.0-313.jdbc3.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\quartz-1.5.1.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\servlet-api.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\xalan.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\xercesImpl.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\xml-apis.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war\WEB-INF\lib\xom-1.0.jar;C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\datatechNode01Cell\jforum_war.ear\jforum.war; Delegation Mode: PARENT_FIRST [1] com.ibm.ws.classloader.JarClassLoader@1227752601 Local Classpath: Delegation mode: PARENT_FIRST [2] com.ibm.ws.classloader.ProtectionClassLoader@4f5f8499 [3] com.ibm.ws.bootstrap.ExtClassLoader@7f46049b [4] sun.misc.Launcher$AppClassLoader@7f58449b [5] sun.misc.Launcher$ExtClassLoader@7f54449b ---Original exception--- java.lang.UnsupportedClassVersionError: net/jforum/InstallServlet (Unsupported major.minor version 49.0) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java(Compiled Code)) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java(Compiled Code)) at com.ibm.ws.classloader.CompoundClassLoader._defineClass(CompoundClassLoader.java:576) at com.ibm.ws.classloader.CompoundClassLoader.findClass(CompoundClassLoader.java(Compiled Code)) at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java(Compiled Code)) at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code)) at java.beans.Beans.instantiate(Beans.java:202) at java.beans.Beans.instantiate(Beans.java:63) at com.ibm.ws.webcontainer.servlet.ServletWrapper$3.run(ServletWrapper.java:1384) at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java(Compiled Code)) at com.ibm.ws.webcontainer.servlet.ServletWrapper.loadServlet(ServletWrapper.java:1379) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:442) at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:2841) at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:220) at com.ibm.ws.webcontainer.VirtualHost.handleRequest(VirtualHost.java:204) at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:1681) at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:77) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:421) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:367) at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:94) at com.ibm.ws.tcp.channel.impl.WorkQueueManager.requestComplete(WorkQueueManager.java:548) at com.ibm.ws.tcp.channel.impl.WorkQueueManager.attemptIO(WorkQueueManager.java(Compiled Code)) at com.ibm.ws.tcp.channel.impl.WorkQueueManager.workerRun(WorkQueueManager.java:934) at com.ibm.ws.tcp.channel.impl.WorkQueueManager$Worker.run(WorkQueueManager.java:1021) at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java(Compiled Code)) --- end Original exception----
[originally posted on jforum.net by looyo]