Hi Vaughn, yes, one of the changes in the 2.4 series is that we require JRE 8 (since everything else has been EOL’ed already and we want to use the new features in JDK 8 as well). Apart from that Akka 2.4 (including milestones) should be binary backwards compatible with Akka 2.3.x, please shout if you run into problems.
Regards, Roland > 25 jul 2015 kl. 04:01 skrev Vaughn Vernon <[email protected]>: > > Hey, > > I have been running Play 2.3.8 with Akka 2.3.9 and all works fine. > > However, I now need to use Akka Persistence and so am getting dependencies > for the Akka 2.4 Snapshot. With this I have started getting exceptions on > Play start up: > > UnsupportedClassVersionError: ... com/typesafe/config/ConfigException : > Unsupported major.minor version 52.0 > > and I get the same for ActorSystem: > > UnsupportedClassVersionError: akka/actor/ActorSystem > > My path is definitely set to run Java version 1.7.0_79-b15, and I start the > Play server using sbt run. But it seems to me like Java class file > major.minor version 52.0 is for Java 1.8. > > My Scala version is 2.11.4, and I do have sbt loading the Akka Snapshot for > the current Scala version (2.11), and I have confirmed that the correct Akka > jar files are cached localled by sbt: for 2.11 and 2.4 snapshot. > > Is it possible that the current Akka 2.4 snapshot for Scala 2.11 is built for > Java 1.8? Otherwise, what gives? > > Thanks for your help. > > Best. > Vaughn > > > -- > >>>>>>>>>> Read the docs: http://akka.io/docs/ <http://akka.io/docs/> > >>>>>>>>>> Check the FAQ: > >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html > >>>>>>>>>> <http://doc.akka.io/docs/akka/current/additional/faq.html> > >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user > >>>>>>>>>> <https://groups.google.com/group/akka-user> > --- > You received this message because you are subscribed to the Google Groups > "Akka User List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To post to this group, send email to [email protected] > <mailto:[email protected]>. > Visit this group at http://groups.google.com/group/akka-user > <http://groups.google.com/group/akka-user>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. Dr. Roland Kuhn Akka Tech Lead Typesafe <http://typesafe.com/> – Reactive apps on the JVM. twitter: @rolandkuhn <http://twitter.com/#!/rolandkuhn> -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
