Java Utililty Methods Date Compare by Day

List of utility methods to do Date Compare by Day

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Description

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

Method

booleanisSameDay(Date lastUpgradeTime)
is Same Day 
Calendar now = Calendar.getInstance();
Calendar lastUpgrade = Calendar.getInstance();
lastUpgrade.setTime(lastUpgradeTime);
if (now.get(Calendar.DATE) == lastUpgrade.get(Calendar.DATE)) {
    return true;
return false;
booleanisSameDay(final Date date1, final Date date2)
Returns true if both of the dates represent the same day. 
return isSameDay(date1.getTime(), date2.getTime());
booleanisSameDayWithToday(Date date)
is Same Day With Today 
if (date == null) {
    return false;
Calendar todayCal = Calendar.getInstance();
Calendar dateCal = Calendar.getInstance();
todayCal.setTime(new Date());
dateCal.setTime(date);
int subYear = todayCal.get(Calendar.YEAR) - dateCal.get(Calendar.YEAR);
...
booleansameDay(Date date1, Date date2)
same Day 
Calendar cal1 = Calendar.getInstance();
Calendar cal2 = Calendar.getInstance();
cal1.setTime(date1);
cal2.setTime(date2);
int date1Year = cal1.get(Calendar.YEAR);
int date1Month = cal1.get(Calendar.MONTH) + 1;
int date1Day = cal1.get(Calendar.DATE);
int date2Year = cal2.get(Calendar.YEAR);
...
booleansameDay(Date date1, Date date2)
Whether the two date are on the same day 
Calendar calendar1 = Calendar.getInstance();
Calendar calendar2 = Calendar.getInstance();
calendar1.setTime(date1);
calendar2.setTime(date2);
return (calendar1.get(Calendar.DAY_OF_YEAR) == calendar2.get(Calendar.DAY_OF_YEAR))
        && (calendar1.get(Calendar.YEAR) == calendar2.get(Calendar.YEAR));
booleansameDay(Date date1, Date date2)
same Day 
if (date1 == null || date2 == null) {
    return false;
Calendar cal1 = Calendar.getInstance();
Calendar cal2 = Calendar.getInstance();
cal1.setTime(date1);
cal2.setTime(date2);
boolean sameDay = cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)
...
booleansameDay(Date date1, Date date2)
same Day 
Calendar c1 = new GregorianCalendar();
Calendar c2 = new GregorianCalendar();
c1.setTime(date1);
c2.setTime(date2);
return c1.get(Calendar.DAY_OF_YEAR) == c2.get(Calendar.DAY_OF_YEAR);
booleansameDay(Date dateOne, Date dateTwo)
Test to see if two dates are in the same day of year 
if ((dateOne == null) || (dateTwo == null)) {
    return false;
Calendar cal = Calendar.getInstance();
cal.setTime(dateOne);
int year = cal.get(Calendar.YEAR);
int day = cal.get(Calendar.DAY_OF_YEAR);
cal.setTime(dateTwo);
...
booleansameDay(Date t1, Date t2)
same Day 
c1.setTime(t1);
c2.setTime(t2);
return (c1.get(Calendar.YEAR) == c2.get(Calendar.YEAR))
        && (c1.get(Calendar.MONTH) == c2.get(Calendar.MONTH))
        && (c1.get(Calendar.DAY_OF_MONTH) == c2.get(Calendar.DAY_OF_MONTH));
booleansameDay(Date t1, Date t2, TimeZone tz)
Determines if the two dates are in the same day in the given time zone. 
Calendar cal1 = new GregorianCalendar(tz);
cal1.setTime(t1);
Calendar cal2 = new GregorianCalendar(tz);
cal2.setTime(t2);
return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)
        && cal1.get(Calendar.MONTH) == cal2.get(Calendar.MONTH)
        && cal1.get(Calendar.DAY_OF_MONTH) == cal2.get(Calendar.DAY_OF_MONTH);