TESTING TOOLS QA TRAINING: How to create log file using Log4j in SeleniumWebdriver with Java

public class Log4j

.{
public static void main(String[] args) throws Exception

{
  Logger logger= Logger.getLogger("LogLearning");
PropertyConfigurator.configure("Log4j.properties");
  System.setProperty("org.apache.commons.logging.Log", "org.apache.commons.logging.impl.Jdk14Logger");
WebDriver driver= new FirefoxDriver();
public WebDriver driver;
  logger.info("Firefox Opened");

driver.manage().window().maximize();
logger.info("Brows maximized");

driver.get("http://seleniumsubbu.blogspot.in/");
logger.info("Website is launched");
}