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FAQ Manager is guru Michael Canzoneri PREMIUM.

Log4j is an open source tool developed for putting log statements into your application. It was developed by the good people at Apache's Jakarta Project. It's speed and flexibility allows log statements to remain in shipped code while giving the user the ability to enable logging at runtime without modifying any of the application binary. All of this while not incurring a high performance cost.

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How can I get log4j to write out to multiple logs?
Tools:Debugging:Log4j
Byron Tymvios, Aug 31, 2006
You need to set up more categories in the log4j.properties file, this can be done like so: # The default root appender log4j.rootLogger=A1 #...
What are the features of log4j?
Tools:Debugging:Log4j
Michael Canzoneri PREMIUM, Oct 2, 2002
log4j is optimized for speed. log4j is based on a named logger hierarchy. log4j is fail-stop but not reliable. log4j is thread-safe. log4j is not restricted...
What are the prerequisites for log4j?
Tools:Debugging:Log4j
Michael Canzoneri PREMIUM, Oct 2, 2002
Log4j is JDK 1.1.x compatible. The DOMConfigurator is based on the DOM Level 1 API. The DOMConfigurator.configure(Element) method will work with any...

Is Log4j thread-safe
Tools:Debugging:Log4j
Michael Canzoneri PREMIUM, Oct 2, 2002
Yes Log4j is thread-safe.
What is does Log4j replace?
Tools:Debugging:Log4j
Michael Canzoneri PREMIUM, Oct 2, 2002
System.out.println through out your code. This feature is nice because Log4j allows you to enable logging at runtime whereas System.out.println do...
What is Log4j?
Tools:Debugging:Log4j
Michael Canzoneri PREMIUM, Oct 2, 2002
Log4j is an open source tool developed for putting log statements into your application. It was developed by the good people at Apache's Jakarta Pr...


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