public static void main(String[] args) throws ParseException { /* * */ String dateFormat = "yyyy-mm-dd"; SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd"); Date date = sdf.parse("2015-12-01"); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(Calendar.YEAR, 3); System.out.println(calendar.getTime()); calendar.add(Calendar.MONTH, 3); System.out.println(calendar.getTime()); calendar.add(Calendar.DAY_OF_YEAR, 10); calendar.set(Calendar.DAY_OF_WEEK, 3); System.out.println(calendar.getTime()); }
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