Thanks. It wouldn't have occurred to me that I needed to use a Java 9 API. I can't remember ever having an upgrade path for anything in any Java version for which I couldn't use the same code in Java N and Java N+1, if the use case was a supported part of the spec in both.
The usual migration path we have is to make all of our code work in both JDK N and JDK N+1, and then flip the switch to migrate to N+1. I expect we are not alone in that. I guess I can call it reflectively. This is pretty nice, otherwise, because we have lots of reflective hacks into the JDK in our codebase, and it gives us a way to do the ones we can't do with Unsafe. :) Jeremy On Mon, Apr 24, 2017 at 11:50 PM, Alan Bateman <alan.bate...@oracle.com> wrote: > On 25/04/2017 07:29, Jeremy Manson wrote: > > Ah, then it sounds as if I just don't know what I'm doing. Any pointers? >> >> This should help: > > http://download.java.net/java/jdk9/docs/api/java/lang/instru > ment/Instrumentation.html#redefineModule-java.lang.Modul > e-java.util.Set-java.util.Map-java.util.Map-java.util.Set-java.util.Map- > > -Alan >