Later DTD version

Hello all

Someone told me I need to use the later DTD version in order to run the <listener-class> in the web.xml. Sorry I really have no idea what DTD is. Currently I think I am using 2_2.dtd. Also I am using Tomcat 4.1.24 and jdk1.3.1_08.

Can anyone tell me where can I download the later DTD version and how to implement it in order to run my <listener-class> when the Tomcat starts?

Many thanks
Viola

Hi all

I have just put the following code on the top of my web.xml
==============================================
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/j2ee/dtds/web-app_2.3.dtd">
==============================================
And this is my web.xml:

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/j2ee/dtds/web-app_2.3.dtd">

<web-app>

<listener>
<listener-class>InterestCounter</listener-class>
</listener>

<security-constraint>
<web-resource-collection>
<web-resource-name>Security</web-resource-name>
<url-pattern>/client/*</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>administrator</role-name>
<role-name>client</role-name>
</auth-constraint>
</security-constraint>

<security-constraint>
<web-resource-collection>
<web-resource-name>Security</web-resource-name>
<url-pattern>/administrator/*</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>administrator</role-name>
</auth-constraint>
</security-constraint>

<login-config>
<auth-method>FORM</auth-method>
<form-login-config>
<form-login-page>/login.html</form-login-page>
<form-error-page>/login_error.html</form-error-page>
</form-login-config>
</login-config>

</web-app>
==============================================
Now the Tomcat didnt give me error message, but I am not sure whether the <listener-class> has called my Servlet, InterestCounter. I have put a System.out.println in this Servlet(full code is in my first post), but I couldnt see this println message on the Tomcat DOS screen. Is this means <listener-class> didnt call my Servlet?

On the other hand, if I move the whole <listener-class> to the bottom of my web.xml, just before the </web-app>. It gave me error:
==============================================
The content of Element type "web-app" must match "<icon?, display name?, description?, distributable?, content param*. servlet*, servlet-mapping, session-config*, mime-mapping*, welcome-file-list*, error-page*, taglib*, resource-ref*, security-constraint*, login-config*, security-role*, env-entry*, ejb-ref*>".>
==============================================

Does the location of the <listener-class> is a matter? Tomcat goes fine if I put the <listener-class> just after <web-app>, is that mean it works? How can I ensure it has called my Servlet?

Many many thanks
Viola