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https://issues.apache.org/jira/browse/FTPSERVER-274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12673550#action_12673550
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Niklas Gustavsson commented on FTPSERVER-274:
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Could you please further explain when this would be useful? I could understand
that it would be useful for method the take generic lists as a parameter, but I
do not understand where it would be useful for us to return a wildard list?
Probably my bad understanding of generics :-)
> Use Wildcard-Generics in API where possible and plausible
> ---------------------------------------------------------
>
> Key: FTPSERVER-274
> URL: https://issues.apache.org/jira/browse/FTPSERVER-274
> Project: FtpServer
> Issue Type: Improvement
> Affects Versions: 1.0.0-RC2
> Reporter: Steve Ulrich
> Fix For: 1.1
>
>
> Currently the API doesn't make use of wildcard generic types.
> Example FtpFile:
> public abstract List<FtpFile> listFiles();
> The used generic for the return type prevents users from returning lists with
> their own type (ie: List<MyFtpFile>).
> A change to:
> public abstract List<? extends FtpFile> listFiles();
> Would allow this without any costs (or I just can't see them *g*)
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