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From "Sebb (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LANG-805) RandomStringUtils.random(count, 0, 0, false, false, universe, random) always throws java.lang.ArrayIndexOutOfBoundsException
Date Sat, 09 Jun 2012 16:14:43 GMT

    [ https://issues.apache.org/jira/browse/LANG-805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13292377#comment-13292377
] 

Sebb commented on LANG-805:
---------------------------

The code has already been fixed.
Note that start == 0 and end == 0 is specifically allowed as a special case.
                
> RandomStringUtils.random(count, 0, 0, false, false, universe, random) always throws java.lang.ArrayIndexOutOfBoundsException
> ----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: LANG-805
>                 URL: https://issues.apache.org/jira/browse/LANG-805
>             Project: Commons Lang
>          Issue Type: Bug
>    Affects Versions: 2.5, 2.6, 3.1
>            Reporter: Thomas BELOT
>            Priority: Blocker
>              Labels: patch
>             Fix For: 3.2, 2.7
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> In commons-lang 2.6 line 250 :
> {code}ch = chars[random.nextInt(gap) + start];{code}
> -This line of code takes a random int to fetch a char in the _chars_ array regardless
of its size.-
> -(Besides _start_ is useless here)-
> -Fixed version would be :-
> {code}//ch = chars[random.nextInt(gap)%chars.length];{code}
> When user pass 0 as _end_ or when the array is not null but empty this line ends up with
an exception

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