web.xml

java servlet is a good practice for you and me to pracitce

<?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/dtd/web-app_2_3.dtd">

<web-app>
    <servlet>
      <servlet-name>
          HelloWorldServlet
      </servlet-name>
      <servlet-class>
          HelloWorldServlet
      </servlet-class>
    </servlet>
    <servlet>
        <servlet-name>
            HelloServlet2
        </servlet-name>
        <servlet-class>
            HelloServlet2
        </servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>HelloWorldServlet</servlet-name>
        <url-pattern>/HelloWorldServlet</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>HelloServlet2</servlet-name>
        <url-pattern>/HelloServlet2</url-pattern>
    </servlet-mapping>
</web-app>