Karl Richter commented on LANG-1382:

> Did you know "Commons RNG"?

Now, that you mention it... `JDKRandom` of Commons RNG provides negative and 
positive values. Imo it still makes a lot of sense to add a link to the Commons 
Lang Javadoc.

> Provide method to generate random numbers without range restriction for all 
> numeric types
> -----------------------------------------------------------------------------------------
>                 Key: LANG-1382
>                 URL: https://issues.apache.org/jira/browse/LANG-1382
>             Project: Commons Lang
>          Issue Type: New Feature
>            Reporter: Karl Richter
>            Priority: Major
> `RandomUtils` only allows to generate random numbers of different numeric 
> types (`byte`, `short`, `double`, etc.) within the range 0 (inclusive) and 
> the maximum value of the respective type. It'd be nice if there were methods 
> to create random numbers for the range between the minimal and the maximal 
> value for all numeric types.
> I'm aware of workarounds like 
> https://stackoverflow.com/questions/27976857/how-to-get-random-number-with-negative-number-in-range,
>  but they're not tested and require quite some thinking which can be avoided 
> (which is afaik one of the many motivations for the Apache commons libraries).
> If such methods already exist they should be definitely linked in the Javadoc 
> of `RandomUtils`.

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