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https://issues.apache.org/jira/browse/MATH-361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12882301#action_12882301
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Luc Maisonobe commented on MATH-361:
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We all agree we need to reduce the number of enums.
What I don't agree with is the fact error messages are for the set of users
that must read the javadoc. Error messages are for end users, some of them not
even knowing commons-math is used in an application they use. They don't read
the javadoc, they don't develop the application.
But when a statistician tries to set up a gamma distribution and get a message
about alpha being negative, he will better understand what his input error was
than if a generic "negative parameter" message was displayed.
Perhaps this example about alpha is a little extreme, and I won't argue long
for this specific exception if you insist on it being replaced by a more
general one. But don't be too drastic in the reduction of the number of
messages and more importantly don't consider messages are for developers using
directly commons math. There will be lot of layers between our very low level
component and a complete end user application, but some messages will go
through all these layers and be finally displayed to users. These messages
should provide as much information to them as we can provide.
Users are the most important part of a system.
> Localization and Error Handling
> -------------------------------
>
> Key: MATH-361
> URL: https://issues.apache.org/jira/browse/MATH-361
> Project: Commons Math
> Issue Type: Improvement
> Affects Versions: 2.1
> Reporter: Gilles
> Priority: Minor
> Attachments: l10n.tar.gz, res.tar.gz
>
>
> This proposal aims at easing the handling of error during algorithms
> development, and also enhancing the flexibility of the error reporting
> (provide meaningful exception classes and run-time selection of the
> localization formatting).
> More details at
> [http://www.mail-archive.com/[email protected]/msg14570.html]
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