Hello, I'm running Netbeans 7.0.1 on a Mac Book Pro with OS Lion. I'm currently using log4j without any problems. I wanted to try out logback. Yesterday I downloaded logback and placed the 4 jar files in the proper location. I'm able to run the basic logback HelloWorld example. Here's the code for the HelloWorld example I'm working with: package helloworld; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class HelloWorld { public static void main(String[] args) { Logger logger = LoggerFactory.getLogger("helloworld"); logger.debug("Hello world."); } } Here's my customized logback.xml file: <configuration> <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"> <encoder> <pattern>%date %n [%thread] %level %logger{35} - %n %msg</pattern> </encoder> </appender> <root level="DEBUG"> <appender-ref ref="STDOUT" /> </root> </configuration> The problem is...Netbeans (or java) never picks up on my customized logback.xml file. I'm starting out easy by just changing the pattern to see if I can get it to work. When I run the project, I see the following on the console: 11:56:33.569 [main] DEBUG helloworld - Hello world. That's not the pattern I specified in logback.xml. I'm assuming I just don't have it in the proper location. I have a copy of logback.xml in the following locations just to see if I had it in the wrong place: NetBeansProjects -> HelloWorld -> src -> logback.xml NetBeansProjects -> HelloWorld -> logback.xml NetBeansProjects -> HelloWorld -> nbproject -> private -> logback.xml NetBeansProjects -> HelloWorld -> build -> classes -> logback.xml System -> Libraries -> Java -> Extensions -> logback.xml I am still unable to get the pattern I'm looking for. Does anyone know why this would be happening? Thanks, Roger -- Roger