When I try to run my
servlet coding deployed in tomcat5 I get the display of the HTML page...but when I click a button and the servlet gets called I get the following message.
This is my first servlet program .please do help.Thanks in advance.
exception
javax.servlet.ServletException: Error allocating a servlet instance
org.apache.catalina.valves.ErrorReportValve.invoke(catalina-5.5.26.jar.so)
org.apache.catalina.connector.CoyoteAdapter.service(catalina-5.5.26.jar.so)
org.apache.coyote.http11.Http11Processor.process(tomcat-http-5.5.26.jar.so)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(tomcat-http-5.5.26.jar.so)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(tomcat-util-5.5.26.jar.so)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(tomcat-util-5.5.26.jar.so)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(tomcat-util-5.5.26.jar.so)
java.lang.Thread.run(libgcj.so.8rh)
root cause
java.lang.ClassFormatError: com.example.web.BeerSelect (unrecognized class file version)
java.lang.VMClassLoader.defineClass(libgcj.so.8rh)
java.lang.ClassLoader.defineClass(libgcj.so.8rh)
java.security.SecureClassLoader.defineClass(libgcj.so.8rh)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(catalina-5.5.26.jar.so)
org.apache.catalina.loader.WebappClassLoader.findClass(catalina-5.5.26.jar.so)
org.apache.catalina.loader.WebappClassLoader.loadClass(catalina-5.5.26.jar.so)
org.apache.catalina.loader.WebappClassLoader.loadClass(catalina-5.5.26.jar.so)
org.apache.catalina.valves.ErrorReportValve.invoke(catalina-5.5.26.jar.so)
org.apache.catalina.connector.CoyoteAdapter.service(catalina-5.5.26.jar.so)
org.apache.coyote.http11.Http11Processor.process(tomcat-http-5.5.26.jar.so)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(tomcat-http-5.5.26.jar.so)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(tomcat-util-5.5.26.jar.so)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(tomcat-util-5.5.26.jar.so)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(tomcat-util-5.5.26.jar.so)
java.lang.Thread.run(libgcj.so.8rh)