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<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.1.xsd"> <context:component-scan base-package="com.springinaction.chapter01.knight" /> </beans> The above example shows an example of an XML file with several namespaces. What is the purpose of these namespaces and most importantly why do they work even where there is no Internet connection? I think the second bit that starts with xsi:schemaLocation contains the XML schema files which are used to validate the structure of the XML document. How come these still work if I run the application that uses this configuration file on a machine that is not on a network? Are the URLs somehow aliases to JAR files?

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