jakarta commons logging

• When writing a library it is very useful to log information. However there are many logging implementations out there, and a library cannot impose the 

use of a particular one on the overall application that the library is a part of.

The Logging package is an ultra-thin bridge between different logging implementations. A library that uses the commons-logging API can be used with any 

logging implementation at runtime. Commons-logging comes with support for a number of popular logging implementations, and writing adapters for others 

is a reasonably simple task.

Applications (rather than libraries) may also choose to use commons-logging. While logging-implementation independence is not as important for 

applications as it is for libraries, using commons-logging does allow the application to change to a different logging implementation without 

recompiling code. 

Note that commons-logging does not attempt to initialise or terminate the underlying logging implementation that is used at runtime; that is the 

responsibility of the application. However many popular logging implementations do automatically initialise themselves; in this case an application may 

be able to avoid containing any code that is specific to the logging implementation used.



http://commons.apache.org/proper/commons-logging/