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https://issues.apache.org/jira/browse/PDFBOX-5723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17792555#comment-17792555
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ASF subversion and git services commented on PDFBOX-5723:
---------------------------------------------------------
Commit 1914304 from [email protected] in branch 'pdfbox/trunk'
[ https://svn.apache.org/r1914304 ]
PDFBOX-5723: remove already cached hashCode a proposed by Axel Howind
> COSName caches already cached hashCode
> --------------------------------------
>
> Key: PDFBOX-5723
> URL: https://issues.apache.org/jira/browse/PDFBOX-5723
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.30, 3.0.1 PDFBox, 4.0.0
> Reporter: Axel Howind
> Assignee: Andreas Lehmkühler
> Priority: Minor
> Fix For: 2.0.31, 3.0.2 PDFBox, 4.0.0
>
> Attachments: Remove_hashCode()_field_from_COSName.patch
>
>
> COSName stores a name (String) and a hash code (int), both are final. The
> constructor calculates the hashCode as `hashCode = name.hashCode()`. Since
> the String class itself also caches the hashCode (it is calculated at first
> access), this is unnecessary and on most JVM implementations wastes 8 bytes
> of memory per COSName instance (4 for the integer and another 4 for padding).
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