Started testing Java9 with log4j 1.2, SLF4J and logback projects

[Rory O'Donnell]

Hi Ceki,

Can you read JEP 223 <http://openjdk.java.net/jeps/223> it describes how 
the new version string is implemented in JDK 9.

Is logback working with JDK 9 ?

Rgds,Rory

On 14/02/2017 10:10, Ceki Gülcü wrote:
>
> Hi All,
>
>
> We started testing SLF4J and logback projects using Java 9, more 
> specifically build 154. As such, I would appreciate if you could add 
> the following details onto the Quality Outreach wiki page.
>
> Contact: Ceki Gülcü
> SLF4J mailing list  slf4j-dev AT qos DOT ch
> Logback mailing list logback-dev AT qos DOT ch
>
> Initial testing results
> =======================
>
> Initial testing indicates that log4j version 1.2.x is unable to parse 
> the result of the call System.getProperties("java.version"). The 
> returned string is "9-ea". However, log4j 1.2.x expects a string in 
> the form "1\.*", for example "1.6", "1.7" etc.
>
> If the string is not in the correct form, log4j 1.2.x conservatively 
> assumes that it is running under Java 1.1 and disables certain 
> important functions, such as MDC support. The code in question is the 
> static initializer of the org.apache.log4j.helpers.Loader class.
>
> Log4j 1.2.x is no longer maintained. However, there are innumerably 
> many projects which still use log4j 1.2.x.
>
> I would suggest that the string returned be in the form "1\.9*" such as
> "1.9EA" so as not to break log4j 1.2.x under Java 9.
>
> Many thanks in advance for taking the above into consideration.
>
> Best regards,
>
> -- 
> Ceki Gülcü
>
>
>

-- 
Rgds,Rory O'Donnell
Quality Engineering Manager
Oracle EMEA , Dublin, Ireland

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