[logback-user] logback 1.2.3 java11 compatibility

[Ralph Goers]

If you check PackagingDataCalculator you will see that if the Reflection class is not available it will fallback to generating a Throwable and walking that to determine the caller’s location, so even 1.2.3 should be compatible with Java 11. In the latest 1.3.0 version the call to sun.reflect.Reflection has been commented out so it should no longer cause that warning message.

Note, I don’t work on Logback so I can’t answer your question on when it will use StackWalker.

Ralph

> On Mar 11, 2021, at 3:28 AM, Baranes, Ofer <ofer.baranes at finastra.com> wrote:
> 
> Hi there,
> When checking compatibility to java11 using jdep, that was the output:
> 
> jdeps.exe -jdkinternals logback-classic-1.2.3.jar
>  
> logback-classic-1.2.3.jar -> JDK removed internal API
>    ch.qos.logback.classic.spi.PackagingDataCalculator -> sun.reflect.Reflection                             JDK internal API (JDK removed internal API)
>  
> Warning: JDK internal APIs are unsupported and private to JDK implementation that are
> subject to be removed or changed incompatibly and could break your application.
> Please modify your code to eliminate dependence on any JDK internal APIs.
> For the most recent update on JDK internal API replacements, please check:
> https://wiki.openjdk.java.net/display/JDK8/Java+Dependency+Analysis+Tool <https://wiki.openjdk.java.net/display/JDK8/Java+Dependency+Analysis+Tool>
>  
> JDK Internal API                         Suggested Replacement
> ----------------                         ---------------------
> sun.reflect.Reflection                   Use java.lang.StackWalker @since 9
>  
> Would there be a compatible version to java 11? If so then When?
> Is there any way to evaluate if this code would not be reachable on specific project?
>  
> Thanks
> Ofer
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