title: Performance issue either System.out.println(" log information ") or use log4j logger file?
body: <p>Can anyone please tell me in web applications which is the better way to store log information. If we use tomcat server internally the log information will be stored in log file. What is the better approach to log the application data console for trouble shooting either by using system.out.println(" log information here") or log4j log file to store log.
  which one gives better performance when we are dealing the large application?  </p>