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https://issues.apache.org/jira/browse/MNG-6825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16996876#comment-16996876
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Karl Heinz Marbaise commented on MNG-6825:
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Using a 500 KB jar file for three classes: {{StringUtils}}, {{Validate}} and
{{SystemUtils}}.
* {{StringUtils}} can be replaced by usage of either {{plexus-utils}} or
{{maven-shared-utils}} or as I tested with self implementation
* {{SystemUtils}} is only used in some tests which can simply replaced by using
JUnit Jupiter with all the support it has.
* {{Validate}} is a precondition class which checks for parameters etc. can be
implemented very easily (done already to see how it works). Later this could be
made part of {{maven-shared-utils}}.
Currently from {{maven-shared-utils}} we are using:
* {{org.apache.maven.shared.utils.io.FileUtils}} (Test Only)
* {{org.apache.maven.shared.utils.logging.MessageBuilder}}
* {{org.apache.maven.shared.utils.logging.MessageUtils}}
The real issue I have found (I was already aware of that) is that
{{plexus-utils}} as well as {{maven-shared-utils}} having so many code in
common (duplicate it more or less) and both of them are used.
Furthermore I found that currently the need for {{commons-io}} in Maven Core
(or better it lands in the distribution {{lib}} directory) is only based on
usage of {{commons-io}} in {{maven-shared-utils}} where only a single class
{{org.apache.commons.io.input.XmlStreamReader}} is used of {{commons-io}}.
If I summarize this:
* If we would move to {{maven-share-utils}} only we could get rid of
** 501879 Byte {{commons-lang3}} (/)
** 261801 Byte {{plexus-utils}} (x)
** 208700 Byte {{commons-io}} (x)
> Remove commons-lang3 dependency
> -------------------------------
>
> Key: MNG-6825
> URL: https://issues.apache.org/jira/browse/MNG-6825
> Project: Maven
> Issue Type: Improvement
> Components: Bootstrap & Build
> Affects Versions: 3.6.3
> Reporter: Karl Heinz Marbaise
> Assignee: Karl Heinz Marbaise
> Priority: Minor
> Fix For: 3.7.0
>
>
> Experiment to see if we can get rid of commons-lang3 dependency.
> * Identified code duplication between:
> ** {{org.apache.commons.lang3.StringUtils}} from {{commons-lang3}} (501879
> Bytes commons-lang3-3.8.1.jar)
> ** {{org.codehaus.plexus.util.StringUtil}} from {{plexus-utils}} (261801
> Bytes plexus-utils-3.2.1.jar)
> ** {{org.apache.maven.shared.utils}} from {{maven-shared-utils}} (166562
> Bytes maven-shared-utils-3.2.1.jar)
> *and the implemented {{StringUtils}}.
> ** We might replace the self implemented with
> {{org.codehaus.plexus.util.StringUtil}}.
> * {{commons-io}} usage by {{maven-shared-utils}} (208700 Bytes
> commons-io-2.5.jar)
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