Thanks Andre,

for answering my call for help,
I tried to answer you questions as best as I could below:

Tomcat was installed using the synaptic packet management
I just ticked tomcat6 and hit the apply button, and tomcat and all its
dependencies
were installed and http://locaclhost:8080 started to work,
that was the easy part :-)

karl@sonoma:/usr/share/tomcat6/bin$ ./version.sh
Using CATALINA_BASE:   /usr/share/tomcat6
Using CATALINA_HOME:   /usr/share/tomcat6
Using CATALINA_TMPDIR: /usr/share/tomcat6/temp
Using JRE_HOME:        /usr/lib/jvm/java-1.6.0-openjdk
Using CLASSPATH:       /usr/share/tomcat6/bin/bootstrap.jar
Server version: Apache Tomcat/6.0.24
Server built:   March 24 2011 1829
Server number:  ...0
OS Name:        Linux
OS Version:     2.6.32-31-generic
Architecture:   i386
JVM Version:    1.6.0_20-b20
JVM Vendor:     Sun Microsystems Inc.
karl@sonoma:/usr/share/tomcat6/bin$

karl@sonoma:/usr/share/tomcat6/bin$ echo $JAVA_HOME
/usr/lib/jvm/java-1.6.0-openjdk

karl@sonoma:/usr/share/tomcat6/bin$ java -version
java version "1.6.0_20"
OpenJDK Runtime Environment (IcedTea6 1.9.7) (6b20-1.9.7-0ubuntu1~10.04.1)
OpenJDK Client VM (build 19.0-b09, mixed mode, sharing)

My web.xml is located here:
karl@sonoma:/usr/share/tomcat6/webapps/ch1/WEB-INF$ ls
classes  web.xml

My servlet is located here:
karl@sonoma:/usr/share/tomcat6/webapps/ch1/WEB-INF/classes$ ls
Ch1Servlet.class

karl@sonoma:/etc/tomcat6$ ls
Catalina             context.xml         policy.d    tomcat-users.xml
catalina.properties  logging.properties  server.xml  web.xml
karl@sonoma:/etc/tomcat6$

---------------------------------------------------------------
My grep for "host" in server.xml:

karl@sonoma:/etc/tomcat6$ grep -A 5 "[Hh]ost" server.xml
         on to the appropriate Host (virtual host).
         Documentation at /docs/config/engine.html -->

    <!-- You should set jvmRoute to support load-balancing via AJP ie :
    <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">

    -->
    <Engine name="Catalina" defaultHost="localhost">

      <!--For clustering, please take a look at documentation at:
          /docs/cluster-howto.html  (simple how to)
          /docs/config/cluster.html (reference documentation) -->
      <!--
--
      <!-- Define the default virtual host
           Note: XML Schema validation will not work with Xerces 2.2.
       -->
      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true" deployOnStartup="true"
            xmlValidation="false" xmlNamespaceAware="false">

        <!-- SingleSignOn valve, share authentication between web
applications
             Documentation at: /docs/config/valve.html -->
--
               prefix="localhost_access_log." suffix=".txt" pattern="common"
resolveHosts="false"/>
        -->

      </Host>
    </Engine>
  </Service>
</Server>
karl@sonoma:/etc/tomcat6$
------------------------------------------------------------------------------------

here I will try to attach the whole server.xml file:




On Sat, Apr 23, 2011 at 11:41 AM, André Warnier <a...@ice-sa.com> wrote:

>
> Sorry, but I don't know the book.
> So maybe you can tell us some more :
> - how did you install Tomcat ? where did you get it ?
> - what version is it ?
> (go to the "bin" directory of tomcat, and run "./version.sh"; paste the
> result here)(*)
> - what version is the JVM ?  ("java -version" may tell you, if the above
> doesn't)
> - can you give us the exact paths where you installed your servlet files ?
> (the servlet itself and the web.xml file)
> - in the Tomcat "conf" directory (in your case, it may be in
> /etc/tomcatxx), there is a file "server.xml". In that file, is a <Host> tag,
> which gives the path for the webapps directory (in the "appBase" attribute).
> Which is that ?
>
>
> (*) if this is a "packaged" tomcat, this may complain that JAVA_HOME is not
> set.  If so, you first have to locate what JAVA_HOME should be set to.  Look
> then in /etc/init.d/tomcatxx to find out.
>
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> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> For additional commands, e-mail: users-h...@tomcat.apache.org
>
>
<?xml version='1.0' encoding='utf-8'?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->
<!-- Note:  A "Server" is not itself a "Container", so you may not
     define subcomponents such as "Valves" at this level.
     Documentation at /docs/config/server.html
 -->
<Server port="8005" shutdown="SHUTDOWN">

  <!--APR library loader. Documentation at /docs/apr.html -->
  <!--
  <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
  -->
  <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
  <Listener className="org.apache.catalina.core.JasperListener" />
  <!-- Prevent memory leaks due to use of particular java/javax APIs-->
  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
  <!-- JMX Support for the Tomcat server. Documentation at /docs/non-existent.html -->
  <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />

  <!-- Global JNDI resources
       Documentation at /docs/jndi-resources-howto.html
  -->
  <GlobalNamingResources>
    <!-- Editable user database that can also be used by
         UserDatabaseRealm to authenticate users
    -->
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />
  </GlobalNamingResources>

  <!-- A "Service" is a collection of one or more "Connectors" that share
       a single "Container" Note:  A "Service" is not itself a "Container", 
       so you may not define subcomponents such as "Valves" at this level.
       Documentation at /docs/config/service.html
   -->
  <Service name="Catalina">
  
    <!--The connectors can use a shared executor, you can define one or more named thread pools-->
    <!--
    <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" 
        maxThreads="150" minSpareThreads="4"/>
    -->
    
    
    <!-- A "Connector" represents an endpoint by which requests are received
         and responses are returned. Documentation at :
         Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
         Java AJP  Connector: /docs/config/ajp.html
         APR (HTTP/AJP) Connector: /docs/apr.html
         Define a non-SSL HTTP/1.1 Connector on port 8080
    -->
    <Connector port="8080" protocol="HTTP/1.1" 
               connectionTimeout="20000" 
               URIEncoding="UTF-8"
               redirectPort="8443" />
    <!-- A "Connector" using the shared thread pool-->
    <!--
    <Connector executor="tomcatThreadPool"
               port="8080" protocol="HTTP/1.1" 
               connectionTimeout="20000" 
               redirectPort="8443" />
    -->           
    <!-- Define a SSL HTTP/1.1 Connector on port 8443
         This connector uses the JSSE configuration, when using APR, the 
         connector should be using the OpenSSL style configuration
         described in the APR documentation -->
    <!--
    <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true"
               maxThreads="150" scheme="https" secure="true"
               clientAuth="false" sslProtocol="TLS" />
    -->

    <!-- Define an AJP 1.3 Connector on port 8009 -->
    <!--
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
    -->


    <!-- An Engine represents the entry point (within Catalina) that processes
         every request.  The Engine implementation for Tomcat stand alone
         analyzes the HTTP headers included with the request, and passes them
         on to the appropriate Host (virtual host).
         Documentation at /docs/config/engine.html -->

    <!-- You should set jvmRoute to support load-balancing via AJP ie :
    <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">         
    --> 
    <Engine name="Catalina" defaultHost="localhost">

      <!--For clustering, please take a look at documentation at:
          /docs/cluster-howto.html  (simple how to)
          /docs/config/cluster.html (reference documentation) -->
      <!--
      <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
      -->        

      <!-- The request dumper valve dumps useful debugging information about
           the request and response data received and sent by Tomcat.
           Documentation at: /docs/config/valve.html -->
      <!--
      <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
      -->

      <!-- This Realm uses the UserDatabase configured in the global JNDI
           resources under the key "UserDatabase".  Any edits
           that are performed against this UserDatabase are immediately
           available for use by the Realm.  -->
      <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
             resourceName="UserDatabase"/>

      <!-- Define the default virtual host
           Note: XML Schema validation will not work with Xerces 2.2.
       -->
      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true" deployOnStartup="true"
            xmlValidation="false" xmlNamespaceAware="false">

        <!-- SingleSignOn valve, share authentication between web applications
             Documentation at: /docs/config/valve.html -->
        <!--
        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
        -->

        <!-- Access log processes all example.
             Documentation at: /docs/config/valve.html -->
        <!--
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"  
               prefix="localhost_access_log." suffix=".txt" pattern="common" resolveHosts="false"/>
        -->

      </Host>
    </Engine>
  </Service>
</Server>
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