I'm VERY new to Logging and am using Log4j with JDK 1.3. I would like to send any log messages which are DEBUG or higher to a file and any messages which are ERROR or higher to the console. I have achieved this in my properties file (below) which uses the "threshold" property. Is this the correct / best way to achieve what I want? Shouldn't I be using "appender additivity" and have my a2 as some sub-appender of a1? If so, how do I modify my properties file to achieve this?