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https://issues.apache.org/jira/browse/XMLBEANS-557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17291988#comment-17291988
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dvponomarev commented on XMLBEANS-557:
--------------------------------------
{quote}Those are 4 classes in 4 different packages.
{quote}
No, there are 8 class files in 4 different packages and only 4 unique class
files. In each package there are two duplicated class files.
{quote}Why is your file-manager showing the TypeSystemHolder twice?
{quote}
Because there are two files with path
org/apache/xmlbeans/metadata/system/sXMLCONFIG/TypeSystemHolder.class
Try this:
{code:java}
unzip xmlbeans-4.0.0.jar
...
replace org/apache/xmlbeans/metadata/system/sXMLCONFIG/TypeSystemHolder.class?
[y]es, [n]o, [A]ll, [N]one, [r]ename:
{code}
this also demonstrates the issue.
> Duplicate classes in jar
> ------------------------
>
> Key: XMLBEANS-557
> URL: https://issues.apache.org/jira/browse/XMLBEANS-557
> Project: XMLBeans
> Issue Type: Bug
> Affects Versions: Version 4.0.0
> Reporter: dvponomarev
> Priority: Major
> Attachments: image-2021-02-27-01-17-20-360.png
>
>
> Download
> [https://search.maven.org/remotecontent?filepath=org/apache/xmlbeans/xmlbeans/4.0.0/xmlbeans-4.0.0.jar].
> Open archive and navigate to duplicate classes:
> {code:java}
> org/apache/xmlbeans/metadata/system/sXMLCONFIG/TypeSystemHolder.class
> org/apache/xmlbeans/metadata/system/sXMLTOOLS/TypeSystemHolder.class
> org/apache/xmlbeans/metadata/system/sXMLLANG/TypeSystemHolder.class
> org/apache/xmlbeans/metadata/system/sXMLSCHEMA/TypeSystemHolder.class{code}
> !image-2021-02-27-01-17-20-360.png!
> Found with maven-enforcer-plugin:3.0.0-M3:enforce:
>
> {code:java}
> [WARNING] Rule 0: org.apache.maven.plugins.enforcer.BanDuplicateClasses
> failed with message:
> Duplicate classes found:
> Found in:
> org.apache.xmlbeans:xmlbeans:jar:4.0.0:compile
> Duplicate classes:
> org/apache/xmlbeans/metadata/system/sXMLCONFIG/TypeSystemHolder.class
> org/apache/xmlbeans/metadata/system/sXMLTOOLS/TypeSystemHolder.class
> org/apache/xmlbeans/metadata/system/sXMLLANG/TypeSystemHolder.class
> org/apache/xmlbeans/metadata/system/sXMLSCHEMA/TypeSystemHolder.class
> {code}
>
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