Is it possible to make log4j display which file it used to configure itself?

Question

Question

Is it possible to make Log4J display the full path of the file it used for configuration?

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Background

I have a

Answer 1

Yes, simply add log4j.debug to the JVM system variables. For example:

java -Dlog4j.debug -cp ... some.class.name

Log4j will then output something like the following:

log4j: Trying to find [log4j.xml] using context classloader sun.misc.Launcher$AppClassLoader@1f7182c1.  
log4j: Using URL [file:/C:/Users/matt/workspace/projectname/target/test-classes/log4j.xml] for automatic log4j configuration.  
log4j: Preferred configurator class: org.apache.log4j.xml.DOMConfigurator  
log4j: System property is :null  
log4j: Standard DocumentBuilderFactory search succeded.  
log4j: DocumentBuilderFactory is: org.apache.xerces.jaxp.DocumentBuilderFactoryImpl  
log4j: debug attribute= "null".  
log4j: Ignoring debug attribute.  
log4j: reset attribute= "false".  
log4j: Threshold ="null".  
...

For reference see the manual and the FAQ.