package de.swingbe.rollinglog; import org.apache.log4j.Logger; public class Main { private static final Logger logger = Logger.getLogger(Main.class); public static void main(String[] args) throws InterruptedException { for (int i = 0; i < 2000; i++) { logger.info("This is the " + i + ". time I say 'Hello World'."); Thread.sleep(1); } } }