/**
  * Stdout :
  *
  * <pre>
  * Hello world!
  * Hello Mr Smith
  * Hello Mr Smith, your last connection was the 2010-10-21
  * Hello Mr Smith, your last connection was the 2010-10-21 and you have win 1234.56
  * </pre>
  *
  * @throws ParseException
  */
 public void echo() throws ParseException {
   DateFormat df = new SimpleDateFormat("yyyy/MM/dd");
   System.out.printf("%s\n", myBundle.getMessage("label.hello"));
   System.out.printf("%s\n", myBundle.getMessage("label.hello.who", "Smith"));
   System.out.printf(
       "%s\n", myBundle.getMessage("label.hello.when", "Smith", df.parse("2010/10/21")));
   System.out.printf(
       "%s\n", myBundle.getMessage("label.hello.how", "Smith", df.parse("2010/10/21"), 1234.56));
 }
 /* (non-javadoc)
  * @see java.lang.Throwable#getMessage()
  */
 public String getMessage() {
   return I18nMessages.getMessage(messageKey, messageArgs);
 }