Android Utililty Methods Long to Date Convert

final Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(tick);
return cal.getTime();

SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT);
return sdf.format(date);

DateFormat formatter = DateFormat.getDateInstance(style, locale);
return formatter.format(date);

Calendar date = Calendar.getInstance();
time = time * 1000;
date.setTimeInMillis(time);
SimpleDateFormat dateformat = new SimpleDateFormat(
        "yyyy-MM-dd HH:mm");
String dateString = dateformat.format(date.getTime());
return dateString;

return getFormatDateTime(new Date(microsecond),
        "yyyy-MM-dd HH:mm:ss");

return getFormatDateTime(new Date(microsecond),
        "yyyy-MM-dd HH:mm:ss");

Long sourceRelativelyGMT = time
        - TimeZone.getTimeZone(DEFAULT_TIMEZONE).getRawOffset();
Long targetTime = sourceRelativelyGMT
        + TimeZone.getDefault().getRawOffset();
Date date = new Date(targetTime);
return date;

SimpleDateFormat formatter = new SimpleDateFormat(DATE_TIME_FORMAT);
return formatter.format(new Date(time));

SimpleDateFormat format = new SimpleDateFormat("HH:mm dd/MM/yy");
StringBuilder dateString = new StringBuilder(
        format.format(dateTime));
return dateString.toString();

SimpleDateFormat sdf = new SimpleDateFormat(DATE_WEEK_FORMAT);
return sdf.format(date);