Early Access builds for JDK 9 b51 are available on java.net

Rory O'Donnell rory.odonnell at oracle.com
Fri Feb 27 11:08:25 UTC 2015

Hi All,

Early Access build for JDK 9 b51 <https://jdk9.java.net/download/> 
available on java.net, summary of  changes are listed here 

I'd also like to use this opportunity to point you to JEP 238: 
Multi-Version JAR Files [0],
which is currently a Candidate JEP for JDK 9.

It's goal is to extend the JAR file format to allow multiple, JDK 
release-specific versions of class
files to coexist in a single file. An additional goal is to backport the 
run-time changes to
JDK 8u60, thereby enabling JDK 8 to consume multi-version JARs. For a 
detailed discussion,
please see the corresponding thread on the core-libs-dev mailing list. [1]

Please keep in mind that a JEP in the Candidate state is merely an idea 
worthy of consideration
by JDK Release Projects and related efforts; there is no commitment that 
it will be delivered in
any particular release.

Comments, questions, and suggestions are welcome on the corelibs-dev 
mailing list. (If you
haven’t already subscribed to that list then please do so first, 
otherwise your message will be
discarded as spam.)


[0] http://openjdk.java.net/jeps/238

Rgds,Rory O'Donnell
Quality Engineering Manager
Oracle EMEA , Dublin, Ireland

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