import org.monolog.logger.Logger; import org.monolog.handler.FileHandler; import org.monolog.formatter.LineFormatter; public class MyApp { public static void main(String[] args) { Logger logger = new Logger(); FileHandler fileHandler = new FileHandler("/path/to/logfile.log"); LineFormatter lineFormatter = new LineFormatter("%message% %level_name%"); fileHandler.setFormatter(lineFormatter); logger.addHandler(fileHandler); logger.info("This is an informational message."); logger.error("This is an error message."); } }