关于在web.xml中定义的servlet的几点疑问。

qdxby

<?xml version="1.0" encoding="ISO-8859-1"?>;

<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
    "http://java.sun.com/j2ee/dtds/web-app_2.2.dtd">;

<web-app>;
  <display-name>;Apache-Axis</display-name>;
  <servlet>;
    <servlet-name>;AxisServlet</servlet-name>;
    <display-name>;Apache-Axis Servlet</display-name>;
    <servlet-class>;
        org.apache.axis.transport.http.AxisServlet
    </servlet-class>;
  </servlet>;

  <servlet>;
    <servlet-name>;AdminServlet</servlet-name>;
    <display-name>;Axis Admin Servlet</display-name>;
    <servlet-class>;
        org.apache.axis.transport.http.AdminServlet
    </servlet-class>;
    <load-on-startup>;100</load-on-startup>;
  </servlet>;

  <servlet>;
    <servlet-name>;SOAPMonitorService</servlet-name>;
    <display-name>;SOAPMonitorService</display-name>;
    <servlet-class>;
        org.apache.axis.monitor.SOAPMonitorService
    </servlet-class>;
    <init-param>;
      <param-name>;SOAPMonitorPort</param-name>;
      <param-value>;5001</param-value>;
    </init-param>;
    <load-on-startup>;100</load-on-startup>;
  </servlet>;

  <servlet-mapping>;
    <servlet-name>;AxisServlet</servlet-name>;
    <url-pattern>;/servlet/AxisServlet</url-pattern>;
  </servlet-mapping>;

  <servlet-mapping>;
    <servlet-name>;AxisServlet</servlet-name>;
    <url-pattern>;*.jws</url-pattern>;
  </servlet-mapping>;

  <servlet-mapping>;
    <servlet-name>;AxisServlet</servlet-name>;
    <url-pattern>;/services/*</url-pattern>;
  </servlet-mapping>;

  <servlet-mapping>;
    <servlet-name>;SOAPMonitorService</servlet-name>;
    <url-pattern>;/SOAPMonitor</url-pattern>;
  </servlet-mapping>;

<!-- uncomment this if you want the admin servlet -->;

  <servlet-mapping>;
    <servlet-name>;AdminServlet</servlet-name>;
    <url-pattern>;/servlet/AdminServlet</url-pattern>;
  </servlet-mapping>;

  <welcome-file-list id="WelcomeFileList_1">;
    <welcome-file>;index.html</welcome-file>;
    <welcome-file>;index.jsp</welcome-file>;
    <welcome-file>;index.jws</welcome-file>;
  </welcome-file-list>;

</web-app>;

例如，如上是WEB-INF目录中的web.xml文件，但我根本没在classes目录中看到，但我仍然可以在浏览器中调用这些servlet,哪位高手能帮我解答这个疑问？谢谢。