web.xml - JSP - Servlet

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">
    <servlet>
        <servlet-name>Hello World</servlet-name>
        <servlet-class>thieu.mao.HelloWorld</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>Hello World</servlet-name>
        <url-pattern>/hello</url-pattern>
    </servlet-mapping>
</web-app>