TomEE specific configuration (ie not inherited one from Tomcat) is based on properties. Therefore
you can fully configure TomEE using properties in
However for convenience it also provides a hybrid XML alternative a.k.a.
Some settings can be specific to applications, these ones are also properties based and
are read in
WEB-INF/application.properties. When you can’t use
tomee.xml to configure
resources you can use
WEB-INF/resources.xml which inherit from
tomee.xml its syntax
but binds the resources to the application and reuses the application classloader.
More about Container Configuration.