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From "Sebb (JIRA)" <>
Subject [jira] [Commented] (LANG-822) NumberUtils#createNumber - bad behaviour for leading "--"
Date Sun, 11 Nov 2012 13:19:12 GMT


Sebb commented on LANG-822:

Thanks for the patch; applied with minor changes to strengthen test case.

LANG-822: NumberUtils#createNumber - bad behaviour for leading "--"


It's still possible that the check for "--" is redundant, but at least now the code is consistent
in applying the check and reporting the exception.
> NumberUtils#createNumber - bad behaviour for leading "--"
> ---------------------------------------------------------
>                 Key: LANG-822
>                 URL:
>             Project: Commons Lang
>          Issue Type: Bug
>          Components: lang.math.*
>    Affects Versions: 3.1
>            Reporter: Sebb
>             Fix For: 3.2
>         Attachments: LANG-822.patch
> NumberUtils#createNumber checks for a leading "--" in the string, and returns null if
found. This is documented as a work round for a bug in BigDecimal.
> Returning nulll is contrary to the Javadoc and the behaviour for other methods which
would throw NumberFormatException.
> It's not clear whether the BigDecimal problem still exists with recent versions of Java.
However, if it does exist, then the check needs to be done for all invocations of BigDecimal,
i.e. needs to be moved to createBigDecimal.

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