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https://issues.apache.org/jira/browse/XBEAN-274?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Struberg closed XBEAN-274.
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Resolution: Fixed
btw, found this with my OSS donated YourKit profiler. So thanks to yourkit!
> Xbean finder is slow because of String.replaceFirst
> ---------------------------------------------------
>
> Key: XBEAN-274
> URL: https://issues.apache.org/jira/browse/XBEAN-274
> Project: XBean
> Issue Type: Bug
> Components: finder
> Affects Versions: 4.0
> Reporter: Mark Struberg
> Assignee: Mark Struberg
> Fix For: 4.1
>
>
> JarArchive uses entry.getName().replaceFirst(".class$", "");
> This is effectively a replacement of the last ".class" in the entry name.
> This is pretty slow as replaceFirst internally creates a PatternMatcher.
> By replacing this line with an endsWith + substring I ended up with 20%
> performance boost.
> Overall in a real world application my OpenWebBeans boot time went down from
> 1020ms to 969ms.
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