[infobox title="web.xml v2.3"]

<?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>  
   
</web-app>  

[/infobox] [infobox title="web.xml v2.4"]

<?xml version="1.0" encoding="UTF-8"?>  
<web-app id="WebApp_9" version="2.4" 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">  
   
</web-app>  

[/infobox] [infobox title="web.xml v2.5"]

<?xml version="1.0" encoding="UTF-8"?>  
   
<web-app xmlns="http://java.sun.com/xml/ns/javaee"  
   
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
   
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"  
   
version="2.5">  
   
</web-app>  

[/infobox] [infobox title="web.xml v3.0"]

<?xml version="1.0" encoding="UTF-8"?>  
   
<web-app  
        version="3.0"  
        xmlns="http://java.sun.com/xml/ns/javaee"  
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
        xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">  
   
</web-app> 

[/infobox] [infobox title="web.xml v3.1"]

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
                      http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
  version="3.1"
  metadata-complete="true">

</web-app>

[/infobox]