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https://issues.apache.org/jira/browse/LANG-968?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebb resolved LANG-968.
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Resolution: Not A Problem
Removing leading zeros is not possible without breaking the API.
That is because a leading 0 indicates an octal number (and 0x indicates hex).
So "0085" fails because "8" is not an octal digit
Integer.parseInt("0085".trim()) should do what you want
> NumberUtils#createInteger(String) NFE with multiple leading zeros
> -----------------------------------------------------------------
>
> Key: LANG-968
> URL: https://issues.apache.org/jira/browse/LANG-968
> Project: Commons Lang
> Issue Type: Improvement
> Components: lang.math.*
> Affects Versions: 3.2.1
> Reporter: Stephan Knitelius
> Priority: Minor
>
> When trying to convert the String "0085" to an Integer I get the following
> numberFormatException:
> java.lang.NumberFormatException: For input string: "085"
> Looking at the code reveals that only a null check is preformed before
> delegating to Integer#decode.
> It would be nice if the NumberUtil classes create* Methods would offer some
> more support:
> - remove leading and traling spaces.
> - remove leading zeros.
> Note: this would also be in line with NumberUtils#isNumber(String) - this
> method evaluates "0085" as true.
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