21. The logger class

Configuration on Java
-
Feature
ResolverFeature.RESOLVER_LOGGER_CLASS(type:String) -
System property
xml.catalog.resolverLoggerClass -
Property file property
resolver-logger-class

Configuration on .NET
-
This setting has no equivalent on .NET; the NLog package is used for logging on .NET
The default logger class (org.xmlresolver.logging.DefaultLogger)
simply writes messages to standard error. For many applications, this is sufficient
and
requires no additional configuration.
An alternate logger class (org.xmlresolver.logging.SystemLogger)
can easily be swapped in for environments where writing to standard error is inappropriate
or where more control is desired. If the system logger is used, it uses the
SLF4J API to do logging. You must configure
your environment with an appropriate logging backend.
A third option, available only at the API level, is to instantiate the
org.xmlresolver.logging.SystemLogger yourself and pass in the
java.util.logging.Logger class that you would like it to use.
See also: Section 14, “The logging level”.