Hello,
I don't think that is possible since you can't build Java 8 code to target a lower JVM. You probably could if you used only those API's, but I believe you can't make that kind of assumption for all libraries. I think this link might be more helpfull: http://www.oracle.com/technetwork/java/javase/8-compatibility-guide-2156366.html Disclaymer: I hope I understood your question right. I'm a developer, and don't know a lot of internals related to packaging and policies around Java on Debian. On 24.08.2016 08:59, Mathieu Malaterre wrote: > [CC me please] > > Hi there, > > Could someone please confirm that all jar files should be compiled > with source and target version number set to 1.5 ? > > I am starring at the following: > > https://anonscm.debian.org/cgit/debian-med/gdcm.git/commit/?id=673e34b58867471a90e2fd70b30d442ecd16f505 > > and I believe the value should be set to 1.5 for all archs > > Right ? > > Thanks >