[Struts Tip] #15 Use chained exceptions

[Ted Husted <hu...@apache.org>]

Many Java mavens recommend that business objects throw their own 
exceptions. Internally, a component may catching a SQL or IO 
exception, but what we really need to tell the user is that a data 
access error occurred. Of course, at the same time, you do not 
want to sacrifice any detail from the original exception. 
Retaining detail from the exception can especially important in a 
layered, multi-tiered, or multi-platform application.. The 
business component may not have direct access to the log, and the 
exception is its only way of telling us what went wrong.

[more ... <http://husted.com/struts/tips/015.html>]





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