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https://issues.apache.org/jira/browse/LANG-1644?focusedWorklogId=561107&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-561107
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ASF GitHub Bot logged work on LANG-1644:
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Author: ASF GitHub Bot
Created on: 04/Mar/21 20:20
Start Date: 04/Mar/21 20:20
Worklog Time Spent: 10m
Work Description: aherbert commented on pull request #727:
URL: https://github.com/apache/commons-lang/pull/727#issuecomment-790912955
The value `5D0` may be valid hex digits but what are you going to do with
that fact? If you want to create a number with it then nothing in NumberUtils
or the Java language will make a number from that string value. They all
require that the string is marked with a prefix to identify it should be parsed
as hex.
For example the following is valid hex `444` but if you parse it as `0x444`
and `444` you get different numbers.
So what is the use case for a method that identifies if a string has only
valid hexidecimal digits and optionally a minus and a hex prefix?
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Issue Time Tracking
-------------------
Worklog Id: (was: 561107)
Time Spent: 3h 40m (was: 3.5h)
> Check if number is hexadecimal
> ------------------------------
>
> Key: LANG-1644
> URL: https://issues.apache.org/jira/browse/LANG-1644
> Project: Commons Lang
> Issue Type: Improvement
> Reporter: Arturo Bernal
> Priority: Minor
> Time Spent: 3h 40m
> Remaining Estimate: 0h
>
> IMO would be fine have a method that given a String tell you if is a valid
> hexadecimal number instead of try to create the number. should be valid:
>
> * 5D0
> * 0x7FFFFFFFFFFFFFFF
>
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