GF use java.util.logging
you have to edit logging.properties in your domain and customize it.
C:\glassfishv3-prelude\glassfish\domains\domain1\config\logging.properties
I wrote a example how to do it for Grizzly.
http://weblogs.java.net/blog/survivant/archive/2008/11/new_logging_for.html
2008/11/20 Adam Bien <abien_at_adam-bien.com>
> Hi All,
>
> is it actually possible with Glassfish v2/v3 to write application specific
> log files separately in a custom format (not into server.log)? I was asked
> about this functionality several times.
>
>
> regards,
>
> adam
>
> --
> Consultant, Author, Java Champion
>
> Homepage: www.adam-bien.com
> Weblog: blog.adam-bien.com
> eMail: abien_at_adam-bien.com
> Mobile: 0049(0)170 280 3144
>
> Books: Enterprise Architekturen (ISBN: 393504299X),
> Java EE 5 Architekturen (ISBN: 3939084247),
> J2EE Patterns, J2EE Hotspots, Enterprise Frameworks and Struts
>
>
>
>
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