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https://issues.apache.org/jira/browse/LANG-409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12568233#action_12568233
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Jörg Gottschling commented on LANG-409:
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Yes, but mainly with validation of user inputs, I think. I remember just one
other case, where a String had to be at least three 'real' characters long. All
other cases where more complex, like 40 hex chars or something like that.
> StringUtils.isText to check in a null safe way if a String has (real) text
> --------------------------------------------------------------------------
>
> Key: LANG-409
> URL: https://issues.apache.org/jira/browse/LANG-409
> Project: Commons Lang
> Issue Type: Improvement
> Reporter: Jörg Gottschling
> Priority: Minor
>
> I used something similar from the Spring Framework and it was useful. I
> suggest two methods where the second is a little more advanced then theirs.
> First a method StringUtils.isText(String text) : boolean which checks if the
> String is not null and contains a least one not whitespace character. (In
> Spring it's "hasText", but "isText" seams to be more consistent within
> commons lang.)
> The second method could be StringUtils.isText(String text, int n) : boolean
> which checks if the String is not null and contains a least n not whitespace
> characters.
> Question: What happens if a (stupid ;-) developer checks for -5 characters? I
> think it should throw an IllegalArgumentException.
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