Classloaders

[Jorge Medina]

In server.xml , a <Server> may contain multiple <Service> elements.
Each <Service> can define multiple <Connectors> but a single <Engine>.
Each <Engine> can define multiple <Host>s.
 
How does this relate to the classloaders -if at all- ?
 
I couldn't find any reference about it on:
 
http://tomcat.apache.org/tomcat-6.0-doc/class-loader-howto.html
 
Would Tomcat create a classloader per each <Host> ?  <Engine> ? or
<Service>?
 
If I define two <Service>s, are they isolated by different classloaders?
 
-Jorge