if something isn't being done to change where log4j gets it's configuration, log4j initialization will not read either of your properties files (the section on Default Initialization Procedure in the log4j 1.2 manual will be very helpful to you). without more details on what you are doing, it's hard to help from here.
what have you tried? what research have you done? googling for "apache fop log4j" produces 79800 hits, the first page looks like it has many relevant hits. Douglas E Wegscheid Lead Technical Analyst, Whirlpool Corporation (269)-923-5278 "A wrong note played hesitatingly is a wrong note. A wrong note played with conviction is interpretation." Tuan Quan <tuan_q...@yahoo.com> 09/08/2009 06:00 PM Please respond to "Log4J Users List" <log4j-user@logging.apache.org> To log4j-user@logging.apache.org cc Subject log4j:WARN No appenders could be found for logger (org.apache.fop.render.RendererFactory) I got the following wanrning messages: log4j:WARN No appenders could be found for logger (org.apache.fop.render.RendererFactory) log4j:WARN Please initialize the log4j system properly. Anyone knows why? Thanks. Tuan content of log4j.pdf.properties: # FO to PDF logging configuration log4j.rootLogger=ERROR, A1 log4j.appender.A1=org.apache.log4j.FileAppender log4j.appender.A1.File=debug_pdf.txt log4j.appender.A1.Append=false log4j.appender.A1.layout=org.apache.log4j.PatternLayout contents of log4j.xsl.properties: # XML to FO logging configuration log4j.rootLogger=ERROR, A1 log4j.appender.A1=org.apache.log4j.FileAppender log4j.appender.A1.File=debug_xsl.txt log4j.appender.A1.Append=false log4j.appender.A1.layout=org.apache.log4j.PatternLayout