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https://issues.apache.org/jira/browse/SPARK-25984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16680572#comment-16680572
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Apache Spark commented on SPARK-25984:
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User 'srowen' has created a pull request for this issue:
https://github.com/apache/spark/pull/22988
> Remove deprecated .newInstance(), primitive box class constructor calls
> -----------------------------------------------------------------------
>
> Key: SPARK-25984
> URL: https://issues.apache.org/jira/browse/SPARK-25984
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Core, SQL, Structured Streaming
> Affects Versions: 3.0.0
> Reporter: Sean Owen
> Assignee: Sean Owen
> Priority: Minor
>
> While working on JDK 11 support, I noticed a lot of new deprecation warnings.
> 80% of them seem to be from two easily-fixable sources:
> - Class.newInstance() is deprecated
> - Almost all constructors from primitive box classes like Integer are
> deprecated
> These are easy to fix because there have long been equivalent, better
> alternatives:
> - Just call .getConstructor().getInstance()
> - Replace new Integer(x) with Integer.valueOf(x), etc
> The latter has the advantage, for integral types, of not even allocating a
> new object for small values.
> We should just fix these to clean up the build output.
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