Zhongxin Yan created LANG-1793:
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Summary: Incorrect Javadoc description in
CharUtils.isAsciiAlphanumeric()
Key: LANG-1793
URL: https://issues.apache.org/jira/browse/LANG-1793
Project: Commons Lang
Issue Type: Bug
Components: lang.*
Affects Versions: 3.20.0
Reporter: Zhongxin Yan
The Javadoc of the {{isAsciiAlphanumeric}} method in {{CharUtils}} contains an
incorrect description.
The first sentence currently states:
{quote}“Tests whether the character is ASCII 7 bit numeric.”
{quote}
However, the actual implementation checks whether the character is
{*}alphanumeric{*}, meaning it returns {{true}} for both:
* alphabetic characters ({{{}A–Z{}}}, {{{}a–z{}}}), and
* numeric characters ({{{}0–9{}}}).
This mismatch between the Javadoc and the method behavior is misleading and may
cause confusion for API users. The documentation should be updated to reflect
that the method checks for ASCII alphanumeric characters, not numeric
characters only.
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