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<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
</configSections>
<log4net debug="true">
<appender name="LogFileAppender" type="log4net.Appender.FileAppender">
<param name="File" value="log.txt"/>
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="[%d] %-5p %c %m%n"/>
</layout>
</appender>
<logger name="File">
<level value="All" />
<appender-ref ref="LogFileAppender" />
</logger>
</log4net>
import com.foo.Bar;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
public class MyApp {
static Logger logger = Logger.getLogger(MyApp.class.getName());
public static void main(String[] args) {
// BasicConfigurator replaced with PropertyConfigurator.
PropertyConfigurator.configure(args[0]);
logger.info("Entering application.");
Bar bar = new Bar();
bar.doIt();
logger.info("Exiting application.");
}
}