Java Code Examples for java.util.Calendar.getActualMaximum()

public static Date getLastDayOfWeek(@Nullable Date date) {
    Calendar calendar = Calendar.getInstance();
    if (date != null) {
        calendar.setTime(date);
    }
    calendar.clear(Calendar.HOUR_OF_DAY);
    calendar.clear(Calendar.HOUR);
    if (calendar.get(Calendar.DAY_OF_MONTH) == calendar.getActualMaximum(Calendar.DAY_OF_MONTH)
            && calendar.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) {
        return calendar.getTime();
    }
    calendar.set(Calendar.DAY_OF_WEEK, calendar.getActualMaximum(Calendar.DAY_OF_WEEK));
    while (calendar.get(Calendar.DAY_OF_WEEK) != Calendar.SUNDAY) {
        calendar.add(Calendar.DATE, 1);
    }
    return calendar.getTime();
}
 

/**
 * 获取本日的n个月前的日期，如本日=2015-03-01，n=3，则输出2014-12-01
 *
 * @param n
 * @return
 */
public static Date getSomeMonthsBefore(int n) {
    Calendar cl = Calendar.getInstance();
    cl.set(Calendar.HOUR_OF_DAY, 0);
    cl.set(Calendar.MINUTE, 0);
    cl.set(Calendar.SECOND, 0);
    cl.set(Calendar.MILLISECOND, 0);

    int year = cl.get(Calendar.YEAR);
    int month = cl.get(Calendar.MONTH);
    int day = cl.get(Calendar.DAY_OF_MONTH);
    int by = n / 12;
    int bm = n % 12;
    if (by > 0) {
        year -= by;
    }
    if (bm > month) {
        year--;
    }
    month = (12 + month - bm) % 12;
    cl.set(Calendar.YEAR, year);
    cl.set(Calendar.MONTH, month);
    cl.set(Calendar.DAY_OF_MONTH, 1);
    if (day > cl.getActualMaximum(Calendar.DAY_OF_MONTH)) {//cl为n个月前的1号，如果该月的最大日数比现在的日数小，则取当月的最大日数
        cl.set(Calendar.DAY_OF_MONTH, cl.getActualMaximum(Calendar.DAY_OF_MONTH));
    } else {
        cl.set(Calendar.DAY_OF_MONTH, day);
    }
    return cl.getTime();
}
 

private void adjustDayInMonthIfNeeded(Calendar calendar) {
    int day = calendar.get(5);
    int daysInMonth = calendar.getActualMaximum(5);
    if (day > daysInMonth) {
        calendar.set(5, daysInMonth);
    }
    setToNearestDate(calendar);
}
 

/**
 * Builds calendar based on the first and last day of the week.
 */
void setCalendarParameters() {
	int d = 1;

	Calendar cal = _date.getCalendar();

	if (Configuration.get("FIRST_DAY_OF_WEEK").equals("mon")) {
		cal.setFirstDayOfWeek(Calendar.MONDAY);
		d = 2;
	} else
		cal.setFirstDayOfWeek(Calendar.SUNDAY);

	cal.set(Calendar.DAY_OF_MONTH, 1);
	cal.getTime();
	firstDay = cal.get(Calendar.DAY_OF_WEEK) - d;
	if (firstDay == -1)
		firstDay = 6;
	daysInMonth = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
}
 

void setCalendarParameters() {
	int d = 1;

	Calendar cal = _date.getCalendar();

	if (Configuration.get("FIRST_DAY_OF_WEEK").equals("mon")) {
		cal.setFirstDayOfWeek(Calendar.MONDAY);
		d = 2;
	} else
		cal.setFirstDayOfWeek(Calendar.SUNDAY);

	cal.set(Calendar.DAY_OF_MONTH, 1);
	cal.getTime();
	firstDay = cal.get(Calendar.DAY_OF_WEEK) - d;
	if (firstDay == -1)
		firstDay = 6;
	daysInMonth = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
}
 

public static int getDaysOfYM(int year, int month) {
    Calendar time = Calendar.getInstance();
    time.clear();
    time.set(Calendar.YEAR, year);
    time.set(Calendar.MONTH, month - 1);
    int day = time.getActualMaximum(Calendar.DAY_OF_MONTH);
    return day;
}
 

public CalendarDate(int day, int month, int year) {
    _year = year;
    _month = month;
    Calendar cal = Calendar.getInstance();
    cal.set(Calendar.YEAR, _year);
    cal.set(Calendar.MONTH, _month);cal.getTime();
    int dmax = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
    if (day <= dmax)
      _day = day;
    else
      _day = dmax;

}
 

/**
 * 返回传入时间月份的最后一天
 * */
public static Date lastDayOfMonth(Date date) {
    Calendar cal = Calendar.getInstance();
    cal.setTime(date);
    int value = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
    cal.set(Calendar.DAY_OF_MONTH, value);
    return cal.getTime();
}
 

/**
 * Return if the date is the last Day of the year
 * @param calendar Calendar object in query
 * @param countryName Country Name
 * @return true if it is otherwise return false
 */
public static boolean isLastDayofYear(Calendar calendar, String countryName){
    Calendar local =  (Calendar)calendar.clone();
    
    if(local == null)
        return false;

    if (isWeekend(local)){
        return false;
    }
    if (isPublicHoliday(local, countryName)){
        return false;
    }
    
    int maxDayOfYear = local.getActualMaximum(Calendar.DAY_OF_YEAR);
    int dayOfYearh = local.get(Calendar.DAY_OF_YEAR);
    
    if (dayOfYearh == maxDayOfYear){
        return true;
    } else {
        while(local.get(Calendar.DAY_OF_YEAR) != maxDayOfYear){
            local.add(Calendar.DAY_OF_YEAR, 1);
            if (!isWeekend(local) && !isPublicHoliday(local, countryName)){
                return false;
            }
        }
        if (isWeekend(local) || isPublicHoliday(local, countryName)){
            return true;
        }else{
            return false;
        }
    }
}
 

public int getEndDate() {
    Calendar cal = Calendar.getInstance();
    cal.set(Calendar.MONTH, selectedItem + 1);
    cal.set(Calendar.DAY_OF_MONTH, selectedItem + 1);
    int maxDay = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
    return maxDay;
}
 

public CalendarDate(int day, int month, int year) {
    _year = year;
    _month = month;
    Calendar cal = Calendar.getInstance();
    cal.set(Calendar.YEAR, _year);
    cal.set(Calendar.MONTH, _month);cal.getTime();
    int dmax = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
    if (day <= dmax)
      _day = day;
    else
      _day = dmax;

}
 

/**
 * Set the calendar.
 * This calendar instance is the fundamental of this MonthView class.
 *
 * @param calendar the calendar you want this MonthView to show.
 */
public void setCalendar(Calendar calendar) {
    if (mCalendar != calendar) {
        mCalendar = calendar;

        Calendar preCalendar = (Calendar) mCalendar.clone();
        preCalendar.add(Calendar.MONTH, -1);
        mDayOffset = getDayOffset();
        mMonthDayCount = mCalendar.getActualMaximum(Calendar.DAY_OF_MONTH);
        mPreMonthDayCount = preCalendar.getActualMaximum(Calendar.DAY_OF_MONTH);

        postInvalidate();
    }
}
 

public static int getTotalDaysOfYear(Date date) {
    Calendar calendar = Calendar.getInstance(local);
    calendar.setTime(date);
    return calendar.getActualMaximum(6);
}
 

public static int getTotalDaysOfMonth(Date date) {
    Calendar calendar = Calendar.getInstance(local);
    calendar.setTime(date);
    return calendar.getActualMaximum(5);
}
 

private int getLastDayOfMonth(int month, int year) {
	Calendar calCurr = GregorianCalendar.getInstance();
	calCurr.set(year, month-1, 1); // Months are 0 to 11
	return calCurr.getActualMaximum(GregorianCalendar.DAY_OF_MONTH);
}
 

public static int getDayNumsOfMonth(Date date) {
    Calendar time = Calendar.getInstance();
    time.setTime(date);
    int day = time.getActualMaximum(Calendar.DAY_OF_MONTH);
    return day;
}
 

/**
 * Antwortet ein Integer von 1-31 welcher die anzahl Tage des Monats
 * entspricht. Das Jahr muss wegen dem Schaltjahr bekannt sein.
 *
 * @param month Index des Monats
 * @param year Jahr in dem die anzahl Tage des Monats ermittelt werden
 * sollen.
 * @return int Anzahl Tage des Monats
 */
public static int getDaysInMonth(int month, int year) {

	Calendar calendar = getCalendar();
	calendar.set(Calendar.YEAR, year);
	calendar.set(Calendar.MONTH, month - 1);
	calendar.set(Calendar.DATE, 1);
	return calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
}
 

/**
 * 取得月天数
 * 
 * @param date
 * @return
 */
public static int getDayOfMonth(Date date) {
	Calendar c = Calendar.getInstance();
	c.setTime(date);
	return c.getActualMaximum(Calendar.DAY_OF_MONTH);
}
 

/**
 * Retourne le nombre de jours maximal dans un mois en tenant compte des années
 * bissextiles.
 *
 * @param date la date dont il faut examiner le mois
 * @return le nombre de jours maximal dans le mois extrait de la date
 */
public static int getMonthMaxDay(Date date) {
  Calendar cal = new GregorianCalendar();
  cal.setTime(date);
  return cal.getActualMaximum(Calendar.DAY_OF_MONTH);
}
 

/**
 * Convert a Java Date into a decimal number of days from beginning of year 0000
 * 
 * @param date The date to convert
 * @return date converted to decimal days
 */
private static double convertToDecimalMonth(Calendar date) {
    int month = (date.get(Calendar.YEAR) * 12) + date.get(Calendar.MONTH);
    double day = ((double)date.get(Calendar.DAY_OF_MONTH)-1d) / ((double)date.getActualMaximum(Calendar.DAY_OF_MONTH)-1d);
    return month + day;
}