Java Utililty Methods Date Compare

List of utility methods to do Date Compare

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Description

The list of methods to do Date Compare are organized into topic(s).

Method

intcompareToMonthByDate(Date startDate, Date endDate)
compare To Month By Date 
Calendar startCal = new GregorianCalendar();
Calendar endCal = new GregorianCalendar();
startCal.setTime(startDate);
endCal.setTime(endDate);
int a = compare(endCal, startCal, 2);
return a;
booleancompareTwoDate(Date beforeDate, Date afterDate)
compare Two Date 
if (beforeDate == null && afterDate == null) {
    return false;
Calendar beforeCalendar = Calendar.getInstance();
beforeCalendar.setTime(beforeDate);
Calendar afterCalendar = Calendar.getInstance();
afterCalendar.setTime(afterDate);
return (afterCalendar.compareTo(beforeCalendar) > 0);
...
intcompareYear(java.util.Date date1, java.util.Date date2)
compare Year 
if (date1 == null || date2 == null)
    return 0;
Calendar calendar = Calendar.getInstance();
calendar.setTime(date1);
int year1 = calendar.get(Calendar.YEAR);
calendar.setTime(date2);
int year2 = calendar.get(Calendar.YEAR);
return year1 - year2;
...
booleancompareYMD(Date begindate, Date enddate)
add by xie compare date only compare year month day 
boolean isBefore = true;
Calendar startCalendar = Calendar.getInstance();
startCalendar.setTime(begindate);
Calendar endCalendar = Calendar.getInstance();
endCalendar.setTime(enddate);
int startYear = startCalendar.get(Calendar.YEAR);
int startMonth = startCalendar.get(Calendar.MONTH);
int startDay = startCalendar.get(Calendar.DAY_OF_MONTH);
...
intcompDate(Date date1, Date date2)
comp Date 
Calendar ca1 = Calendar.getInstance();
Calendar ca2 = Calendar.getInstance();
ca1.setTime(date1);
ca2.setTime(date2);
int distanceMin = ca1.get(Calendar.MINUTE) - ca2.get(Calendar.MINUTE);
return distanceMin;
intcompDate4(Date date1, Date date2)
comp Date 
Calendar ca1 = Calendar.getInstance();
Calendar ca2 = Calendar.getInstance();
ca1.setTime(date1);
ca2.setTime(date2);
int day1 = ca1.get(Calendar.DAY_OF_MONTH);
int year1 = ca1.get(Calendar.YEAR);
int month1 = ca1.get(Calendar.MONTH);
int day2 = ca2.get(Calendar.DAY_OF_MONTH);
...
intgetCompareDate(Date startDate, Date endDate)
get Compare Date 
if (startDate == null || endDate == null) {
    return 0;
long l = endDate.getTime() - startDate.getTime();
long d = l / (24 * 60 * 60 * 1000);
return (int) d;
intgetCompareDate(String strDate1, String strDate2, String pFormat)
get Compare Date 
SimpleDateFormat fmt = new SimpleDateFormat(pFormat);
Date date1 = fmt.parse(strDate1);
Date date2 = fmt.parse(strDate2);
return compareDate(date1, date2);
booleangetCompareDate(String strDate1, String strDate2, String pFormat)
get Compare Date 
SimpleDateFormat fmt = new SimpleDateFormat(pFormat);
Date date1 = fmt.parse(strDate1);
Date date2 = fmt.parse(strDate2);
return getCompareDate(date1, date2);
longgetCompareDateNum(String sDateValue1, String sDateValue2)
get Compare Date Num 
long DAY = 24L * 60L * 60L * 1000L;
SimpleDateFormat df = new SimpleDateFormat(DATE_FORMAT);
Date d1 = df.parse(sDateValue1);
Date d2 = df.parse(sDateValue2);
return ((d2.getTime() - d1.getTime()) / DAY);