jrtfs supports forwarding to a jrtfs in a target VM

[Jim Laskey (Oracle)]

(thumbsup)

> On Jan 7, 2016, at 8:29 AM, Sundararajan Athijegannathan <sundararajan.athijegannathan at oracle.com> wrote:
> 
> Hi,
> 
> Cross JDK support for jrt file system has been added.
> 
> http://hg.openjdk.java.net/jigsaw/jake/jdk/rev/678cec00a4f4
> https://bugs.openjdk.java.net/browse/JDK-8066177
> 
> With this change, jrt file system supports the following modes:
> 
> 1. A tool running on JDK 8 can access a JDK 9 run-time image.
> 2. A tool running on JDK 9 can access its own run-time image.
> 3. A tool on JDK 9 can access a *different* JDK 9 run-time image - perhaps a jlink produced image with fewer modules in it.
> Target JDK's home directory is specified via "java.home" property in Map passed to FileSystems.newFileSystem(URI, Map) method.
> ( https://docs.oracle.com/javase/8/docs/api/java/nio/file/FileSystems.html#newFileSystem-java.net.URI-java.util.Map- ).
> 
> Thanks,
> -Sundar