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https://issues.apache.org/jira/browse/LUCENE-2733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-2733:
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Attachment: LUCENE-2733.patch
Here are some of them, I am sure, there may be more such classes (possibly
outside util).
When we backport to 3.x, we should revalidate (some classes existed before, eg.
BitUtil), but they are all maked as @lucene.internal, so we may remove the
ctors easily.
> Add private ctors to static utility classes
> -------------------------------------------
>
> Key: LUCENE-2733
> URL: https://issues.apache.org/jira/browse/LUCENE-2733
> Project: Lucene - Java
> Issue Type: Task
> Reporter: Uwe Schindler
> Priority: Minor
> Fix For: 3.1, 4.0
>
> Attachments: LUCENE-2733.patch
>
>
> During development in 3.x and trunk we added some new classes like IOUtils
> and CodecUtils that are only providing static methods, but have no ctor at
> all. This adds the default empty public ctor, which is wrong, the classes
> should never be instantiated.
> We should add private dummy ctors to prevent creating instances.
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