@Test public void testAddDays() throws Exception { Calendar cal = Calendar.getInstance(); cal.roll(Calendar.DAY_OF_YEAR, 5); Calendar cal2 = Calendar.getInstance(); Date dateResult = DateHelper.addDays(cal2.getTime(), 5); assertEquals(0, DateHelper.diffDays(dateResult, cal.getTime())); }
public static Date addDays(Date date, int count) { Calendar cal = getEmptyCalendar(); cal.setTime(date); cal.add(Calendar.DATE, count); return cal.getTime(); }
DateHelper { public static Date addDays(Date date, int count) { Calendar cal = getEmptyCalendar(); cal.setTime(date); cal.add(Calendar.DATE, count); return cal.getTime(); } }
DateHelper { public static Date addDays(Date date, int count) { Calendar cal = getEmptyCalendar(); cal.setTime(date); cal.add(Calendar.DATE, count); return cal.getTime(); } private  DateHelper(); }
DateHelper { public static Date addDays(Date date, int count) { Calendar cal = getEmptyCalendar(); cal.setTime(date); cal.add(Calendar.DATE, count); return cal.getTime(); } private  DateHelper(); static String format(Date dt); static String format(Date dt, String pattern); static String formatShortDate(Date dt); static String formatShortTime(Date dt); static String formatISO8601(Date dt); static Calendar getEmptyCalendar(); static Calendar calendar(int year, int month, int day); static Date date(int year, int month, int day); static Date beginOfDay(Date dt); static Date endOfDay(Date dt); static int diffDays(Date dtEnd, Date dtBegin); static Date setTime(Date date, Date time); static Date getTime(Date datetime); static boolean isOnlyTime(Date dt); static boolean isOnlyDate(Date dt); static Date addDays(Date date, int count); static boolean isEmpty(Date date); static String[] getWeekdays(); static String[] getShortWeekdays(); static int[] getIndexWeekdays(); }
DateHelper { public static Date addDays(Date date, int count) { Calendar cal = getEmptyCalendar(); cal.setTime(date); cal.add(Calendar.DATE, count); return cal.getTime(); } private  DateHelper(); static String format(Date dt); static String format(Date dt, String pattern); static String formatShortDate(Date dt); static String formatShortTime(Date dt); static String formatISO8601(Date dt); static Calendar getEmptyCalendar(); static Calendar calendar(int year, int month, int day); static Date date(int year, int month, int day); static Date beginOfDay(Date dt); static Date endOfDay(Date dt); static int diffDays(Date dtEnd, Date dtBegin); static Date setTime(Date date, Date time); static Date getTime(Date datetime); static boolean isOnlyTime(Date dt); static boolean isOnlyDate(Date dt); static Date addDays(Date date, int count); static boolean isEmpty(Date date); static String[] getWeekdays(); static String[] getShortWeekdays(); static int[] getIndexWeekdays(); static final String DATE_FORMAT_ISO8601; }