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https://issues.apache.org/jira/browse/LANG-778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13155160#comment-13155160
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Joerg Schaible commented on LANG-778:
-------------------------------------

bq. is it really neccessary? 
There is nothing to get the byte representation of a UUID.

UUID.toString.getBytes() is the binary representation of the string (48 bytes) 
and not of the UUID (16 bytes).

UUID.nameUUIDFromBytes() creates a type-3 UUID using the provided bytes as 
namespace. It does *not* create directly a UUID from the given bytes.
                
> Add UUIDUtils.toByteArray and UUIDUtils.fromByteArray
> -----------------------------------------------------
>
>                 Key: LANG-778
>                 URL: https://issues.apache.org/jira/browse/LANG-778
>             Project: Commons Lang
>          Issue Type: New Feature
>          Components: lang.*
>            Reporter: Joerg Schaible
>            Assignee: Joerg Schaible
>            Priority: Minor
>         Attachments: LANG-778.diff
>
>   Original Estimate: 4h
>  Remaining Estimate: 4h
>
> A UUID represents 16 bytes. In some situation (e.g. using DBs that do not 
> have native support for the type UUID) it is necessary to use directly the 
> bytes. The JDK does not support the transformation from UUID to bytes and 
> back, therefore I'd like to add UUIDUtils with the two proposed methods.

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