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https://issues.apache.org/jira/browse/ACCUMULO-4376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15449809#comment-15449809
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Keith Turner commented on ACCUMULO-4376:
----------------------------------------

[~melrief] if you are thinking of working, consider reading the following 
article.   I like this approach of using interfaces to define the builder graph 
and having a implementation builder class that implements all of the interfaces.

https://www.jayway.com/2012/02/07/builder-pattern-with-a-twist/

> Introduce a Builders for "data" classes
> ---------------------------------------
>
>                 Key: ACCUMULO-4376
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4376
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: client
>            Reporter: Josh Elser
>             Fix For: 2.0.0
>
>
> In looking at ACCUMULO-4375, I was a little frustrated at how we have 3x 
> constructors than Key really provides just to support {{byte[]}}, {{Text}}, 
> and {{CharSequence}} arguments. Additionally, the {{copy}} argument forces 
> the user to use the most specific (most arguments) constructor if they want 
> to avoid the copy. This makes constructing a Key from just a row while 
> avoiding a copy very pedantic.
> I think a KeyBuilder (or KeyFactory) class would be a big usability benefit 
> and reduce the amount of code that clients have to write to most efficiently 
> construct Keys.



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