The Loader element represents the web
application class loader that will be used to load Java
classes and resources for your web application. Such
a class loader must follow the requirements of the Servlet
Specification, and load classes from the following locations:
- From the
/WEB-INF/classes directory inside your
- From JAR files in the
inside your web application.
- From resources made available by Catalina to all web
A Loader element MAY be nested inside a Context
component. If it is not included, a default Loader configuration will be
created automatically, which is sufficient for most requirements.
For a more in-depth description of the class loader hierarchy
that is implemented by Catalina, see the ClassLoader HowTo.
The description below uses the variable name $CATALINA_BASE to refer the
base directory against which most relative paths are resolved. If you have
not configured Tomcat for multiple instances by setting a CATALINA_BASE
directory, then $CATALINA_BASE will be set to the value of $CATALINA_HOME,
the directory into which you have installed Tomcat.