code: public static void configureLogging() {
  		// Create the appender that will write log messages to the console.
  		ConsoleAppender consoleAppender = new ConsoleAppender();
  		// Define the pattern of log messages.
  		// Insert the string "%c{1}:%L" to also show class name and line.
  		String pattern = "%d{yyyy-MM-dd HH:mm:ss} %-5p - %m%n";
  		consoleAppender.setLayout(new PatternLayout(pattern));
  		// Change to Level.ERROR for fewer messages:
  		consoleAppender.setThreshold(Level.INFO);
  
  		consoleAppender.activateOptions();
  		Logger.getRootLogger().addAppender(consoleAppender);
  	}
docs: Defines how messages should be logged. This method can be modified to
  restrict the logging messages that are shown on the console or to change
  their formatting. See the documentation of Log4J for details on how to do
  this.