Log4j logging examples

LogSamples.java

import org.slf4j.Logger;

public class LogSamples {

       private static final Logger LOG = LoggerFactory.getLogger(LogSamples.class);
       
       public static void main(String args[]){
              Object o = new Object;
              
              // Sample 1
              LOG.debug("Object o: " + o.toString());

              // Sample 2
              LOG.debug("Object o: {}", o.toString());
              
              // Sample 3
              LOG.debug("Object o: %s", o.toString());
       }
}