Android and Log4j

Ralph Goers ralph.goers at
Sun Dec 3 20:08:56 UTC 2017

> On Dec 3, 2017, at 12:19 PM, Alan Bateman <Alan.Bateman at> wrote:
> On 03/12/2017 18:25, Ralph Goers wrote:
>> Log4j added support for Java 9 by:
>> Converting the Log4j-API jar to a multi-release jar that includes support for StackWalker and the new Process Id support.
>> Adding a module-info.jar to the Log4j API jar.
>> We are now getting complaints from Android users (as well as a few others) that their tools no longer work with log4j. During development I ran into problems with OSGi. The problems seem to mostly revolve around the fact that they can’t deal with the classes for Java 9. I was surprised that Android is failing on the classes in META-INF/versions/9 as I had assumed that would be an invalid location for a class file prior to Java 9, but that seems not to be the case. The fact that turns into a class file also seems to be a problem since the various tools are seeing it and having problems with it.
>> :
>> Do you have any recommendations on how we can resolve this impasse?
> The Android tools should ignore class files in META/**, at least until they are updated to work with multi-release JARs. Have you created a bug for them to look at this issue?

Yes, although I don’t develop for Android so I am not certain I created the issue correctly. <>.

I also created <> which relates to <>. No activity has occurred on either of these issues.


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