that's it: I added this Multi-Release: true attribute configuration in the demo and now it works like a charm, thank you
Perhaps this requirement should be described in http://openjdk.java.net/jeps/238 Is it expected to be supported with JDK 8 also? Is there any magic trick to add this feature to a normal JDK 8? Regards, Hervé FYI, here is the output now: Archive: multirelease/target/multirelease-0.8-SNAPSHOT.jar testing: META-INF/MANIFEST.MF OK testing: base/Base.class OK testing: mr/A.class OK testing: META-INF/versions/9/mr/A.class OK testing: META-INF/versions/8/mr/A.class OK No errors detected in compressed data of multirelease/target/multirelease-0.8- SNAPSHOT.jar. $ unzip -p multirelease/target/multirelease-0.8-SNAPSHOT.jar META- INF/MANIFEST.MF Manifest-Version: 1.0 Archiver-Version: Plexus Archiver Created-By: Apache Maven 3.3.9 Built-By: herve Build-Jdk: 9-ea Multi-Release: true [...] # Run Multi Release JAR with JRE 7 $ java -classpath multirelease/target/multirelease-0.8-SNAPSHOT.jar base.Base 1.7.0_71-b14 BASE # Run Multi Release JAR with JRE 8 $ java -classpath multirelease/target/multirelease-0.8-SNAPSHOT.jar base.Base 1.8.0_25-b17 BASE # Run Multi Release JAR with JRE 9 classic $ java -classpath multirelease/target/multirelease-0.8-SNAPSHOT.jar base.Base 9-ea+114 FROM BASE -> NINE # Run Multi Release JAR with JRE 9 Jigsaw $ java -classpath multirelease/target/multirelease-0.8-SNAPSHOT.jar base.Base 9-ea+114-2016-04-15-162029.javare.4859.nc FROM BASE -> NINE Le mardi 19 avril 2016 08:46:36 Alan Bateman a écrit : > On 19/04/2016 02:49, Hervé BOUTEMY wrote: > > But the unexpected part is that JRE 9, either classical or jigsaw, don't > > take advantage of the MR JAR: is this really expected, or did I do > > something wrong? > Hervé - can you dump the manifest? It's not clear from your mail that it > has the Multi-Release attribute. > > -Alan
