You can set the system property in your main() method as the first line which would do the trick.
As for a way to register itself later, I suppose that would be a feature request: https://issues.apache.org/jira/browse/LOG4J2 On 1 May 2017 at 19:55, Clément Guillaume <cguilla...@hotpads.com> wrote: > Hi, > > I wonder if it would be possible to programmatically configure jul to route > to log4j2. > It would be useful in case where system properties can not be used to set > the LogManager or the log4j-jul jar cannot be in the classpath at > bootstrap. > > jul to log4j2 bridge allow a similar configuration: > https://www.slf4j.org/api/org/slf4j/bridge/SLF4JBridgeHandler.html > -- Matt Sicker <boa...@gmail.com>