Andrei Anischevici created LANG-1729:
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Summary: NumberUtils.isParsable() returns true for Fullwidth
Unicode digits
Key: LANG-1729
URL: https://issues.apache.org/jira/browse/LANG-1729
Project: Commons Lang
Issue Type: Bug
Components: lang.math.*
Affects Versions: 3.14.0
Reporter: Andrei Anischevici
*NumberUtils.isParsable()* returns *true* for Fullwidth Unicode digits (U+FF10
to U+FF19, see
[https://en.wikipedia.org/wiki/Halfwidth_and_Fullwidth_Forms_(Unicode_block)]),
even though these cannot be parsed by *Double.parseDouble()* and
{*}Float.parseFloat(){*}, as {*}NumberFormatException{*}s are thrown when
trying to parse these.
I've also opened a JDK bug, see
[https://bugs.java.com/bugdatabase/view_bug?bug_id=JDK-8326627] and
[https://bugs.openjdk.org/projects/JDK/issues/JDK-8326627]
Since the underlying issue is that *Character.isDigit()* returns *true* for
fullwidth digits and until this is fixed in the JDK, it would be great to fix
this in *NumberUtils.isParsable()* so that it would return *false* for
Fullwidth Unicode digits.
Gist reproducing the issue:
[https://gist.github.com/XDex/2e300189a07e8224524100f26b5f6b46]
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