public static void main(String[] args) { 
  Date now = new Date(); 
  System.out.println(now); 
  String nowStr = now.toString(); 
  DateFormat format = new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy"); 
  Date parsedNow = null; 
  try { 
    parsedNow = format.parse(nowStr); 
    System.out.println(parsedNow); 
  } catch (ParseException e) { 
    e.printStackTrace(); 
  } 
} 

DateFormat format = new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy"); 

DateFormat format = new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy", new Locale(System.getProperty("user.language"))); 

public static void main(String[] args) { 
  Date now = new Date(); 
  System.out.println(now); 
  String nowStr = now.toString(); 
  DateFormat format = new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy", new Locale(System.getProperty("user.language"))); 
  System.out.println(System.getProperty("user.language")); 
  Date parsedNow = null; 
  try { 
    parsedNow = format.parse(nowStr); 
    System.out.println(parsedNow); 
  } catch (ParseException e) { 
    format = new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy", Locale.ENGLISH); 
    try { 
      System.out.println("new format by 'en'"); 
      System.out.println(format.parse(nowStr)); 
    } catch (ParseException e1) { 
      e1.printStackTrace(); 
    } 
  } 
} 

<input type="hidden" name="data" value=' 
          <fmt:formatDate value="${dto.date}" pattern="yyyy-MM-dd"/> 
          '/>