Java Utililty Methods Month Day

List of utility methods to do Month Day

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Description

The list of methods to do Month Day are organized into topic(s).

Method

StringgetFirstDayOfNextMonth()
get First Day Of Next Month 
Calendar cal = Calendar.getInstance();
cal.add(Calendar.MONTH, +1);
int firstDay = cal.getMinimum(Calendar.DAY_OF_MONTH);
cal.set(Calendar.DAY_OF_MONTH, firstDay);
return getFormatDate(cal.getTime(), DATE_FORMAT);
StringgetFirstDayStringOfMonth(Date date)
get First Day String Of Month 
if (null == date)
    return null;
return getFormateDateString(date, format2);
StringgetFirstDayStrOfMonth(Date date)
get First Day Str Of Month 
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(Calendar.DATE, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
return formatDate2Str(calendar.getTime());
DategetLastMonthDay()
get Last Month Day 
String pattern = "yyyy-MM-dd";
Calendar cd = Calendar.getInstance();
cd.add(Calendar.MONTH, -1);
String newTime = String.valueOf(cd.get(Calendar.YEAR)) + "-" + String.valueOf(cd.get(Calendar.MONTH) + 1)
        + "-" + String.valueOf("01");
return convertStringToDate(newTime, pattern);
DategetLastMonthLastDate()
get Last Month Last Date 
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.MONTH, -1);
int max = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
calendar.set(Calendar.DAY_OF_MONTH, max);
return calendar.getTime();
StringgetLastMonthLastDay()
get Last Month Last Day 
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", Locale.CHINA);
Calendar c = Calendar.getInstance();
c.set(Calendar.DAY_OF_MONTH, 0);
return sdf.format(c.getTime());
StringgetLastMonthLastDay()
get Last Month Last Day 
Calendar cal = Calendar.getInstance();
cal.setTime(cal.getTime());
cal.add(Calendar.MONTH, -1);
SimpleDateFormat daytime = new SimpleDateFormat("yyyyMMdd");
cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DAY_OF_MONTH));
return daytime.format(cal.getTime());
StringgetLastMothStart()
get Last Moth Start 
Calendar c = getCurCalendar();
c.add(Calendar.MONTH, -1);
c.set(Calendar.DAY_OF_MONTH, 1);
return formartRandomDate(c.getTime(), "yyyy-MM-dd");
DateGetLastWorkDayofMonth(String strDateStart)
Get Last Work Dayof Month 
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
Date date_start = sdf.parse(strDateStart);
Calendar cal_start = Calendar.getInstance();
cal_start.setTime(date_start);
int dayOfWeek = cal_start.get(Calendar.DAY_OF_WEEK) - 1;
Date a = new Date();
if (dayOfWeek == 1) {
    a = AddDate(date_start, -3);
...
DategetMonthDay(int year, int month)
get Month Day 
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, year);
cal.set(Calendar.MONTH, month - 1);
int lastDay = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
cal.set(Calendar.DAY_OF_MONTH, lastDay);
return cal.getTime();