import org.apache.log4j.Logger; public class ExampleClass { private static final Logger logger = Logger.getLogger(ExampleClass.class); public void doSomething() { logger.info("Doing something..."); } } log4j.rootLogger=INFO, logfile log4j.appender.logfile=org.apache.log4j.FileAppender log4j.appender.logfile.File=/path/to/logfile.log log4j.appender.logfile.layout=org.apache.log4j.PatternLayout log4j.appender.logfile.layout.ConversionPattern=%d [%t] %-5p %c{1} - %m%n