Create SimpleDateFormats from a string read from a file

public class DateFormatFile {
     /** Today's Date */
     Date dNow = new Date();
    
         public static void main(String[] args) throws IOException {
         DateFormatFile df = new DateFormatFile();
         BufferedReader is = 
         new BufferedReader(new InputStreamReader(System.in));
         String line;
             while ((line = is.readLine()) != null) {
             df.process(line);
         }
     }
    
     /** Use a SimpleDateFormat - based on arg - to print the date your way. */
         protected void process(String arg) { 
         SimpleDateFormat formatter = new SimpleDateFormat(arg);
         System.out.println("FORMAT: " + arg);
         System.out.println("RESULT: " + formatter.format(dNow));
         System.out.println();
     }
}