Progress report on SLF4J project modularization

Alan Bateman Alan.Bateman at
Sat Mar 25 07:47:17 UTC 2017

On 24/03/2017 17:41, Ceki Gülcü wrote:

> Hi All,
> The initial phase of SLF4J project modularization in preparation for
> Java 9/Jigsaw went well. I ran into many wrinkles most of which were
> due to my own ignorance about Java 9 modules.
> You can see the results at
> Now that the initial phase of modularization is done, I looked at
> creating mutlti-release jars for the SLF4J project. However, after
> having spent 2 full days on trying to get Maven to do multi-release
> jars, I am giving up without having made any measurable progress.
Just curious, why you do need a MR-JAR? Aside from the 
module-info.class, do you have other source/classes that use APIs that 
are new for Java SE 9 or code that uses sun.* APIs that have been 
encapsulated or removed in JDK 9? If it's just the module-info.class 
then you should only need to create a modular JAR. The module-info.class 
will be ignored when on JDK 8 or older.


More information about the jigsaw-dev mailing list