Read the log4j manual.
http://jakarta.apache.org/log4j/docs/manual.html
>From: "Kenny Ma" <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>Subject: Log4J ?
>Date: Fri, 14 Sep 2001 10:03:18 +0800
>
>Can anyone tell me how to use Log4J ?
>
>the sample is
> cat.debug("Hello world.");
> cat.info("What a beatiful day.");
>
>so, what is the different if i use
>System.err.println("Hello world."); ???
>
>Both are output to standout...
>
>How to use Log4J more easy ? Thanks
>
>
>/* Kenny Ma
> [EMAIL PROTECTED] */
>
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