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Henri Yandell commented on LANG-428:
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Must admit I don't see why isNumeric, isAlphanumeric, isAlpha return true for "".
> StringUtils.isNumeric
> ---------------------
>
> Key: LANG-428
> URL: https://issues.apache.org/jira/browse/LANG-428
> Project: Commons Lang
> Issue Type: Bug
> Components: lang.*
> Affects Versions: 2.3
> Reporter: Artem Sakhnov
> Assignee: James Carman
> Priority: Minor
>
> StringUtils.isNumeric.
> if we put empty string as parameter we got true.
> StringUtils.isNumeric("") return true.
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