Introduction - If you have any usage issues, please Google them yourself
<p>The <code>ConfigManager</code> provides a possibility to maintain a list
of applications properties through standard .properties files, an .xml files
based on Configuration Manager DTD, an .xml files containing multiple
namespaces. Since version 2.1 a pluggable sources of configuration properties
are also available. Those sources are described in .config files that
represent a standard properties files. The .config files should contain a
required <code>classname</code> property that contains the name of class
implementing the <code>PluggableConfigSource</code> interface, and any number
of key-value pairs that should be used to configure this <code>
PluggableConfigSource</code> instance.