Date(0) returns 19:00h !!!

Question

Hi,
Im formatting a Date using a SimpleDateFormatter and it always add 19:00h to the time....
SimpleDateFormat sdf = new SimpleDateFormat("h:mm:ss", getLocale());
Date d = new Date(0);
sdf.format(d);it gives me 19:00:00 instead of 00:00:00
I think this is a matter of time zone... like if the hours added to adjust time to my time zone were always added to the time! What i want to do is simply display a number of miliseconds in h:mm:ss
thanks

Answer 1

Thanks i used a similar formula and it does the job
        // The method i use
     public static String longToMediumTimeString(long milliseconds) {
          long hh = milliseconds / (1000L*60*60);
          long mm = (milliseconds-(hh*(1000L*60*60))) / (1000L*60);
          long ss = (milliseconds-(hh*(1000L*60*60))-(mm*(1000L*60))) / 1000L;          
        return leftZeroFillInteger(""+hh, 2)+":"+leftZeroFillInteger(""+mm, 2)+":"+leftZeroFillInteger(""+ss, 2);
    // I also put here other methods i already have and i used to format the final string
    public static boolean isNumeric(String str, Class<? extends Number> clazz) {
        try {
            if (clazz.equals(Byte.class)) {
                Byte.parseByte(str);
            else if (clazz.equals(Double.class)) {
                Double.parseDouble(str);
            else if (clazz.equals(Float.class)) {
                Float.parseFloat(str);
            else if (clazz.equals(Integer.class)) {
                Integer.parseInt(str);
            else if (clazz.equals(Long.class)) {
                Long.parseLong(str);
            else if (clazz.equals(Short.class)) {
                Short.parseShort(str);
        } catch (NumberFormatException nfe) {
            System.out.println(str + " is not a valid number.");
            return false;
        return true;
    public static String leftZeroFillInteger(String aNumericString, int lengthOfFinalString) {
         if ((isNumeric(aNumericString, Integer.class) ||
                   isNumeric(aNumericString, Long.class) ||
                   isNumeric(aNumericString, Float.class) ||
                   isNumeric(aNumericString, Short.class) ||
                   isNumeric(aNumericString, Double.class)) &&
                   aNumericString.length()<lengthOfFinalString) {
              for (int i=0; aNumericString.length()!=lengthOfFinalString; i++) {
                   aNumericString = "0"+aNumericString;
         return aNumericString;
    }