package ch.asynk; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class Main { private static Logger logger = null; public static void main(String [] args ) { logger = LoggerFactory.getLogger(Main.class); System.out.println("System.out"); System.err.println("System.err"); logger.trace("trace"); logger.debug("debug"); logger.info("info"); logger.warn("warn"); logger.error("error"); System.exit(0); } }