public   class  HTMLTableFormatter  extends  java.util.logging.Formatter {
   public  String format(LogRecord record) {
     return  ("  <tr style='BACKGROUND-COLOR: #fef9da;'><td>" + record.getMillis() + "</td><td>"
        + record.getMessage() + "</td>"+
        "<td>"+record.getLevel()+"</td>"
        +"</tr>\n");
   
  }

   public  String getHead(Handler h) {

     return  ("<p><b> Hello, i'am super-duper log!!! </b></p> <table width='100%'  border>\n  "
        + "<tr style='color: white; BACKGROUND-COLOR: #4892ce;' ><th>Time</th><th>Log Message</th><th>Level</th></tr>\n");
  }

   public  String getTail(Handler h) {
     return  ("</table>\n");
  }
}

 import  java.io.IOException;

 import  java.util.logging.FileHandler;
 import  java.util.logging.Level;
 import  java.util.logging.LogRecord;
 import  java.util.logging.Logger;

 public   class  Main {
     public  Main() {
    }

     public   static   void  main(String[] args) {
        FileHandler handler =  null ;
         try  {
            // Create a file handler that write log record to a file called beststylelog.log
            handler =  new  FileHandler("best_style_log.html");
            
        }  catch  (IOException e) {
            //--debug--//e.printStackTrace();
        }
        
        HTMLTableFormatter f =  new  HTMLTableFormatter();

        handler.setFormatter(f);
        
        // Add to the desired logger
        Logger logger = Logger.getLogger("com.mycompany");
        logger.addHandler(handler);

        // set logging level
        //logger.setLevel(Level.SEVERE);
        // logger.setLevel(Level.ALL);
        //logger.setLevel(Level.WARNING); 

        logger.log(Level.INFO, "hello log //--debug--// ");

        logger.log(Level.WARNING, "hello HTML LOGG //--debug--// ");

        logger.log(Level.SEVERE, "hello java.util ! //--debug--// ");

        logger.log(Level.INFO, " priv best style log! //--debug--// ");

        //ADD log record
        LogRecord lr =  new  LogRecord(Level.INFO, "i'am log record!");
        logger.log(lr);
    }
}