Bruno P. Kinoshita commented on LANG-1196:

Hi Gus,

Having a patch or pull request would definitely help reviewing your use case. I 
had a quick look at RandomStringUtils, and one easy fix would be to pass the 
Random implementation in the constructor. But java.util.Random inherits only 
form Object. Perhaps another object that wraps different random number 
generators? Feel free to update the ticket with comments or a patch or link to 
a pull request or repository.


> Provide way to set random number generator on RandomStringUtils to enable 
> repeatable test execution
> ---------------------------------------------------------------------------------------------------
>                 Key: LANG-1196
>                 URL: https://issues.apache.org/jira/browse/LANG-1196
>             Project: Commons Lang
>          Issue Type: Improvement
>          Components: lang.*
>    Affects Versions: 3.4
>         Environment: java version "1.8.0_66"
> Java(TM) SE Runtime Environment (build 1.8.0_66-b17)
> Java HotSpot(TM) 64-Bit Server VM (build 25.66-b17, mixed mode)
> Linux 4.0.5 #3 SMP Mon Sep 14 12:41:09 BST 2015 x86_64 Intel(R) Core(TM) 
> i7-4710MQ CPU @ 2.50GHz GenuineIntel GNU/Linux
>            Reporter: Gus Power
>            Priority: Minor
> Hi,
> I'm using [Sham 
> |http://search.maven.org/#artifactdetails%7Corg.shamdata%7Csham%7C0.3%7Cjar] 
> to generate realistic looking test data for both parameterized tests and user 
> acceptance testing. We log the seed that is used for each run so that if 
> there is an issue we can recreate exactly the same test data. I would also 
> like to use some of the commons-lang RandomStringUtils functionality but 
> notice that the implementation provides no way of setting the random number 
> generator to be used.
> {code}private static final Random RANDOM = new Random();{code}
> A way to configure this would be really useful. If there is an alternative 
> way to do this then that would be great. If you think it's a good idea and it 
> requires a patch I'm happy to supply one.
> Cheers,
> Gus.

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