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https://issues.apache.org/jira/browse/WICKET-6104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15168992#comment-15168992
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ASF subversion and git services commented on WICKET-6104:
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Commit ec1db0f3392b89af28c18889b11b76b43a4c768e in wicket's branch
refs/heads/master from [~mgrigorov]
[ https://git-wip-us.apache.org/repos/asf?p=wicket.git;h=ec1db0f ]
WICKET-6104 Rework AjaxFallback** components to use java.util.Optional for
their #onEvent methods
> Rework AjaxFallback** components to use java.util.Optional for their #onEvent
> methods
> -------------------------------------------------------------------------------------
>
> Key: WICKET-6104
> URL: https://issues.apache.org/jira/browse/WICKET-6104
> Project: Wicket
> Issue Type: Improvement
> Components: wicket
> Affects Versions: 8.0.0-M1
> Reporter: Martin Grigorov
> Assignee: Martin Grigorov
>
> At the moment Wicket's passes "null" as a AjaxRequestTarget when an
> AjaxFallback** component is used in a browser with disabled JavaScript.
> Sometimes application developers forget to check the passed "target" for null
> and try to use and this leads to NullPointerException at runtime.
> It would be better to make use of Java 8's java.util.Optional. This way the
> application developer cannot forget the check.
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