Github user yanghua commented on the issue:
https://github.com/apache/flink/pull/6016
I mean the issue was thrown before the review, that may be considered it
was not a principal problem, deprecating `Class.newInstance` most reason is
used to fix undeclared checked exceptions (even if there is a little
performance cost). And I think JDK's API developer should not make hasty
decision. Maybe we can watch the JDK's implementation about both of them with
IDE.---
