package lvyi;
import org.apache.log4j.Logger;
import org.apache.log4j.BasicConfigurator;

public class Hello
{

    static Logger logger = Logger.getLogger(Hello.class);

    public static void main(String args[])
    {
        BasicConfigurator.configure();
        
        logger.debug("Hello world.");
        logger.info("Welcome you.");
    }
}