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https://issues.apache.org/jira/browse/LANG-747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13720081#comment-13720081
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James Koppel commented on LANG-747:
-----------------------------------
createNumber() still does not handle 8-digit hex longs (e.g.: "0x80000000").
> NumberUtils does not handle Long Hex numbers
> --------------------------------------------
>
> Key: LANG-747
> URL: https://issues.apache.org/jira/browse/LANG-747
> Project: Commons Lang
> Issue Type: Bug
> Components: lang.math.*
> Reporter: Sebb
> Fix For: 3.2
>
>
> NumberUtils.createLong() does not handle hex numbers, but createInteger()
> handles hex and octal.
> This seems odd.
> NumberUtils.createNumber() assumes that hex numbers can only be Integer.
> Again, why not handle bigger Hex numbers?
> ==
> It is trivial to fix createLong() - just use Long.decode() instead of
> valueOf().
> It's not clear why this was not done originally - the decode() method was
> added to both Integer and Long in Java 1.2.
> Fixing createNumber() is also fairly easy - if the hex string has more than 8
> digits, use Long.
> Should we allow for leading zeros in an Integer?
> If not, the length check is trivial.
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