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

booleanafter(String format, String baseDate, String compareDate)
after 
SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
try {
    Date base = simpleDateFormat.parse(baseDate);
    Date compare = simpleDateFormat.parse(compareDate);
    return compare.after(base);
} catch (ParseException e) {
    throw new RuntimeException(e.getMessage());
Integercompare(Date d1, Date d2)
compare 
java.util.Calendar c1 = java.util.Calendar.getInstance();
java.util.Calendar c2 = java.util.Calendar.getInstance();
c1.setTime(d1);
c2.setTime(d2);
return c1.compareTo(c2);
intcompare(Date d1, Date d2)
Compares two dates taking into consideration only the year, month and day 
Calendar c1 = Calendar.getInstance();
c1.setTime(d1);
Calendar c2 = Calendar.getInstance();
c2.setTime(d2);
if (c1.get(Calendar.YEAR) == c2.get(Calendar.YEAR)) {
    if (c1.get(Calendar.MONTH) == c2.get(Calendar.MONTH)) {
        return c1.get(Calendar.DAY_OF_MONTH) - c2.get(Calendar.DAY_OF_MONTH);
    return c1.get(Calendar.MONTH) - c2.get(Calendar.MONTH);
return c1.get(Calendar.YEAR) - c2.get(Calendar.YEAR);
Stringcompare(Date d1, Date d2)
compare 
Calendar c1 = Calendar.getInstance();
c1.setTime(d1);
Calendar c2 = Calendar.getInstance();
c2.setTime(d2);
if (c1.after(c2)) {
    return ">";
} else if (c1.before(c2)) {
    return "<";
...
Booleancompare(Date date, Date fromDate, Date toDate)
compare 
Calendar date1 = Calendar.getInstance();
date1.setTime(date);
Calendar from = Calendar.getInstance();
from.setTime(fromDate);
Calendar to = Calendar.getInstance();
to.setTime(toDate);
if (date1.after(from) && date1.before(to)) {
    return false;
...
intcompare(Date date1, Date date2, String format)
compare 
if (date1 == null && date2 == null) {
    return 0;
if (date1 == null) {
    return -1;
if (date2 == null) {
    return 1;
...
intCompare(Date dtA, Date dtB, boolean bUnkIsPast)
Compare 
if (bUnkIsPast) {
    boolean bInvA = ((dtA.getTime() >= m_dtInvMin.getTime()) && (dtA.getTime() <= m_dtInvMax.getTime())
            && (dtA.getMinutes() == 59) && (dtA.getSeconds() == 59));
    boolean bInvB = ((dtB.getTime() >= m_dtInvMin.getTime()) && (dtB.getTime() <= m_dtInvMax.getTime())
            && (dtB.getMinutes() == 59) && (dtB.getSeconds() == 59));
    if (bInvA)
        return (bInvB ? 0 : -1);
    if (bInvB)
...
intcompare(Date start, Date end)
compare 
Calendar c1 = Calendar.getInstance();
c1.setTime(start);
Calendar c2 = Calendar.getInstance();
c2.setTime(end);
int year1 = c1.get(Calendar.YEAR);
int year2 = c2.get(Calendar.YEAR);
if (year1 != year2) {
    return year1 - year2;
...
Booleancompare(Date start, String end)
compare 
SimpleDateFormat format = new SimpleDateFormat(dtLong);
String s1 = format.format(start);
String s2 = end;
java.util.Calendar c1 = java.util.Calendar.getInstance();
java.util.Calendar c2 = java.util.Calendar.getInstance();
try {
    c1.setTime(format.parse(s1));
    c2.setTime(format.parse(s2));
...
intcompare(Date startDate, Date endDate, Date targetDate)
This method compares a target date with a date range. 
return (compare(startDate, endDate, targetDate.getTime()));