web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
    version="2.4">

    <display-name>Sample Web Application</display-name>
    <description>
        This is a simple web application to demonstrate Jenkins build, test and deploy capabilities along with ANT.
    </description>

    <servlet>
        <servlet-name>SampleServlet</servlet-name>
        <servlet-class>example.Calculator</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>SampleServlet</servlet-name>
        <url-pattern>/sample</url-pattern>
    </servlet-mapping>

</web-app>