Hi,
I am using Tomcat-5.5.8 on Cygwin. I have written my own ContextListener class (called ApplicationStart) that implements ServletContextListener. The class is compiled and is present in my WEB-INF/classes folder in the proper package. When I start Tomcat, I get the following error: ---------- SEVERE: Error configuring application listener of class edu.uta.search.util.ApplicationStart java.lang.NoClassDefFoundError: javax/servlet/ServletContextListener 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$1.run(URLClassLoader.java:195) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader .java:1247) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader .java:1181) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.j ava:3607) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4097 ) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.ja va:759) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:9 18) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java :881) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:475) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1126) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:31 1) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSu pport.java:119) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1020) at org.apache.catalina.core.StandardHost.start(StandardHost.java:718) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1012) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442) at org.apache.catalina.core.StandardService.start(StandardService.java:450) at org.apache.catalina.core.StandardServer.start(StandardServer.java:683) at org.apache.catalina.startup.Catalina.start(Catalina.java:537) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav a:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor Impl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:271) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:409) Feb 3, 2006 3:50:31 PM org.apache.catalina.core.StandardContext listenerStart SEVERE: Skipped installing application listeners due to previous error(s) Feb 3, 2006 3:50:31 PM org.apache.catalina.core.StandardContext start SEVERE: Error listenerStart Feb 3, 2006 3:50:31 PM org.apache.catalina.core.StandardContext start SEVERE: Context startup failed due to previous errors Feb 3, 2006 3:50:32 PM org.apache.catalina.core.ApplicationContext log INFO: ContextListener: contextInitialized() Feb 3, 2006 3:50:32 PM org.apache.catalina.core.ApplicationContext log INFO: SessionListener: contextInitialized() Feb 3, 2006 3:50:32 PM org.apache.coyote.http11.Http11Protocol start INFO: Starting Coyote HTTP/1.1 on http-80 Feb 3, 2006 3:50:32 PM org.apache.jk.common.ChannelSocket init INFO: JK2: ajp13 listening on /0.0.0.0:8009 Feb 3, 2006 3:50:32 PM org.apache.jk.server.JkMain start INFO: Jk running ID=0 time=0/110 config=null Feb 3, 2006 3:50:32 PM org.apache.catalina.storeconfig.StoreLoader load INFO: Find registry server-registry.xml at classpath resource Feb 3, 2006 3:50:33 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 6018 ms ---------- Web.xml has the entry: <listener> <listener-class>edu.uta.search.util.ApplicationStart</listener-class> </listener> Looks like it cannot find the servlet-api.jar! But the servlet-api.jar is present at C:/tomcat-5.5.8/common/lib/servlet-api.jar. It is in the system Classpath and I also tried putting it in the Path. Can anybody point out if I am making some mistake? Thanks, Rahul.