Derby gets advance notice of new Open JDK distributions, so we have been
struggling with this change since the beginning of the week. Our
experience is being tracked by the Derby developer email thread
https://apache-database.10148.n7.nabble.com/JDK-17-is-now-in-Rampdown-Phase-One-td151971.html,
Those of you who haven't yet heard, the upcoming JDK 17 release will be
deprecating (for future removal) the SecurityManager classes and some of
the related infrastructure. The complete details of this proposed change
are explained here https://openjdk.java.net/jeps/411.
The initial changes ar
