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https://issues.apache.org/jira/browse/LANG-1390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16434584#comment-16434584
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ASF GitHub Bot commented on LANG-1390:
--------------------------------------

GitHub user joschi opened a pull request:

    https://github.com/apache/commons-lang/pull/324

    LANG-1390: StringUtils#join() for List<?>

    This pull request implements two variants of the `StringUtils#join()` 
method which work on lists (`java.util.List`) and allow specifying the start 
and end indices of the elements to join.
    
    Refs https://issues.apache.org/jira/browse/LANG-1390

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/joschi/commons-lang LANG-1390

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/commons-lang/pull/324.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #324
    
----
commit d6e8fbcdd2559d2fd53aa031ec5c7a21cda7c0f8
Author: Jochen Schalanda <jochen@...>
Date:   2018-04-11T18:27:05Z

    LANG-1390: StringUtils#join() for List<?>

----


> StringUtils.join() with support for List<?> with configurable start/end 
> indices
> -------------------------------------------------------------------------------
>
>                 Key: LANG-1390
>                 URL: https://issues.apache.org/jira/browse/LANG-1390
>             Project: Commons Lang
>          Issue Type: Improvement
>          Components: lang.*
>    Affects Versions: 3.7
>            Reporter: Jochen Schalanda
>            Priority: Minor
>
> Apache Commons Lang offers a variant of the 
> [StringUtils#join()|https://commons.apache.org/proper/commons-lang/javadocs/api-3.7/org/apache/commons/lang3/StringUtils.html#join-java.lang.Object:A-java.lang.String-int-int-]
>  function which allows specifying the start and end indices which should be 
> used to concatenate the elements.
> Unfortunately, this method only works for arrays (as of Apache Commons Lang 
> 3.7) but not for lists 
> ([java.util.List|https://docs.oracle.com/javase/8/docs/api/java/util/List.html]).



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