code: public void setAmPmText(String am, String pm)
     {
        for (SimpleDateFormat format : m_formats)
        {
           DateFormatSymbols symbols = format.getDateFormatSymbols();
           symbols.setAmPmStrings(new String[]
           {
              am,
              pm
           });
           format.setDateFormatSymbols(symbols);
        }
     }
docs: Allows the AM/PM text to be set.
  
  @param am AM text
  @param pm PM text