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https://issues.apache.org/jira/browse/WICKET-5350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13766659#comment-13766659
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Sven Meier commented on WICKET-5350:
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>"No wildcard type for return value"
Interesting, see WICKET-5184 for an example where usage of wildcards could be
improved too.
> Enahancement for AbstractChoice and WildcardListModel API
> ---------------------------------------------------------
>
> Key: WICKET-5350
> URL: https://issues.apache.org/jira/browse/WICKET-5350
> Project: Wicket
> Issue Type: Improvement
> Affects Versions: 7.0.0, 6.10.0
> Reporter: Betlista
> Priority: Minor
> Labels: generics
>
> According to Efective Java book
> (http://devender.files.wordpress.com/2008/05/effectivejava.pdf), item 28:
> "No wildcard type for return value"
> Especially "User should not have to think about wildcards to use your API".
> so
> public List<? extends E> getChoices()
> should be changed to
> public List<E> getChoices()
> and for WildcardListModel
> protected List<? extends T> createSerializableVersionOf(List<? extends T>
> object)
> should be changed to
> protected List<T> createSerializableVersionOf(List<? extends T> object)
> Probably there is a lot of such things in framework.
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