public FileHandler() 
{
        this(null, null, null);
}

 public FileHandler(String directory,
    String prefix,
    String suffix) 
{
        this.directory = directory;
        this.prefix = prefix;
        this.suffix = suffix;
        configure();
        open();
}

 public  void close() 
{
        
        try {
            if (writer == null)
                return;
            writer.write(getFormatter().getTail(this));
            writer.flush();
            writer.close();
            writer = null;
            date = "";
        } catch (Exception e) {
            reportError(null, e, ErrorManager.CLOSE_FAILURE);
        }
}

Close the currently open log file (if any).

 public  void flush() 
{
        try {
            writer.flush();
        } catch (Exception e) {
            reportError(null, e, ErrorManager.FLUSH_FAILURE);
        }
}

Flush the writer.

 public  void publish(LogRecord record) 
{
    // --------------------------------------------------------- Public Methods
        if (!isLoggable(record)) {
            return;
        }
        // Construct the timestamp we will use, if requested
        Timestamp ts = new Timestamp(System.currentTimeMillis());
        String tsString = ts.toString().substring(0, 19);
        String tsDate = tsString.substring(0, 10);
        // If the date has changed, switch log files
        if (!date.equals(tsDate)) {
            synchronized (this) {
                if (!date.equals(tsDate)) {
                    close();
                    date = tsDate;
                    open();
                }
            }
        }
        String result = null;
        try {
            result = getFormatter().format(record);
        } catch (Exception e) {
            reportError(null, e, ErrorManager.FORMAT_FAILURE);
            return;
        }
        try {
            writer.write(result);
            writer.flush();
        } catch (Exception e) {
            reportError(null, e, ErrorManager.WRITE_FAILURE);
            return;
        }
}

Format and publish a LogRecord.