Commons Configuration provides a generic configuration interface which enables an application to read configuration data from a variety of sources. Commons Configuration provides typed access to single, and multi-valued configuration parameters as demonstrated by the following code:
Double double = config.getDouble("number"); Integer integer = config.getInteger("number");
Configuration parameters may be loaded from the following sources:
ConfigurationFactory
and
a CompositeConfiguration
. Additional sources of configuration parameters can
be created by using custom configuration objects. This customization can be achieved by
extending AbstractConfiguration
or AbstractFileConfiguration
.
The full Javadoc API documentation is available here.
The latest release of Apache Jakarta Commons Configuration is available from here. It is also available from IBiblio. The Changes Report explains all of the changes and bug fixes that have been made.
Commons Configuration started as code in Apache JServ. The JServ code was subsequently
added to Jakarta Turbine. After Jakarta
Turbine, this configuration interface moved to Jakarta Velocity
and underwent various improvements. After Velocity, this code was introduced to the
Jakarta Commons as ExtendedProperties
.
Configuration began life in the Commons as a Sandbox component, and was promoted to the
Commons Proper in late 2003.