Configuration files in the Java project

1. Maven : pom.xml
   
   • namespace : "http://maven.apache.org/POM/4.0.0"
     
   • must conform to XML schema maven-4.0.0.xsd (2484 lines)
   • Example
   
   
2. Hibernate : hibernate.cfg.xml
   
   • no namespace
   • must conform to DTD hibernate-configuration-3.0.dtd (53 lines)
     
   • Example
   
   
3. WEB-INF/web.xml
   
   • namespace : "http://java.sun.com/xml/ns/javaee"
   • must conform to XML schema  web-app_3_0.xsd (272 lines)
   • Example
     
     
4. Spring : applicationContext.xml, testContext.xml, WEB-INF/spring-servlet.xml
   
   • main namespace : "http://www.springframework.org/schema/beans"
     secondary namespaces : "http://www.springframework.org/schema/context", etc
     
   • must conform to as many XML Schemas as declared namespaces...
     spring-beans.xsd (1200 lines), spring-context.xsd (540 lines), etc.
   • Example (small)
     
   • Example (large)