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https://issues.apache.org/jira/browse/MATH-403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13004192#comment-13004192
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Gilles commented on MATH-403:
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"checkNotNull" added in revision 1079519.
> Never propagate a "NullPointerException" resulting from bad usage of the API
> ----------------------------------------------------------------------------
>
> Key: MATH-403
> URL: https://issues.apache.org/jira/browse/MATH-403
> Project: Commons Math
> Issue Type: Task
> Reporter: Gilles
> Priority: Minor
> Fix For: 3.0
>
>
> Package "exception" contains a class named "NullArgumentException" meant to
> signal that an argument was "null" where it shouldn't have been.
> For consistency, every method of the API should be checked for "null"
> arguments and throw "NullArgumentException" appropriately.
> This means hunting down all unchecked uses of references. Is there a tool
> that will report those?
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