Processing logger using java util logging lib

LoggingExemple.pde

import java.util.logging.*;
import java.util.Date;

// Main logger
Logger LOGGER = Logger.getLogger("");

MyCustomClass customInstance;

void setupLogging() {

  try {
    // Logg to file, max size 1048576bits, rotate every 5 files, append to existing file
    Handler handler = new FileHandler(sketchPath("output_%g.log"), 1048576, 5, true);

    // Format time input
    handler.setFormatter(new SimpleFormatter() {

      // [DD-MM-YYYY HH:MM:SS GMT-TIMEZONE] <LEVEL> Logline
      private static final String format = "[%1$td-%1$tm-%1$tY %1$tT GMT%1tz] <%2$-4s> %3$s %n";
        @Override
        public synchronized String format(LogRecord lr) {
          return String.format(format,
              new Date(lr.getMillis()),
              lr.getLevel().getLocalizedName(),
              lr.getMessage()
            );
        }
      }
    );

    LOGGER.addHandler(handler);
  }
  catch (Exception e) {

    LOGGER.warning("Error setting up logging " + e);
  }
}

void setup() {
  setupLogging();
  
  customInstance = new MyCustomClass();
  
  // Use the main logger to do program level logging
  LOGGER.log(Level.INFO, "Setup complete");
}

void draw() {
  background(0);
  
  customInstance.draw();

  if(frameCount % 100 == 0) {
    LOGGER.info("Log every 100 frames");
  }  
}

MyCustomClass.pde

class MyCustomClass {
  int x;
  int y;
  // Class level logger
  Logger logger = Logger.getLogger(MyCustomClass.class.getName());
  
  MyCustomClass() {
    this.x = 0;
    this.y = 0;
    
    this.logger.info("MyCustomClass constructor has been called");
  }
  
  void draw() {
    this.update();
    
    square(this.x, this.y, 10);
    
    if(frameCount % 200 == 0) {
      this.logger.warning("Useless class level log warning every 200 frame");
    }
  }
  
  void update() {
    this.x = (int) random(0, 100);
    this.y = (int) random(0, 100);
  }
  
}