Why and when to perform this task
Designers and developers of applications that run with or under WebSphere Application Server, such as servlets, JSP files, enterprise beans, client applications, and their supporting classes, may find it useful to use the same facility for generating messages that WebSphere Application Server itself uses, JRas.
This approach has advantages over simply adding System.out.println() statements to your code:
Unless you choose to extend the JRas framework, using the JRas API set is only slightly more complicated than writing basic System println() statements.