Java Utililty Methods Date Compare

boolean after(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());

Integer compare(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);

int compare(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);

String compare(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 "<";
...

Boolean compare(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;
...

int compare(Date date1, Date date2, String format)
compare

if (date1 == null && date2 == null) {
 return 0;
if (date1 == null) {
 return -1;
if (date2 == null) {
 return 1;
...

int Compare(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)
...

int compare(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;
...

Boolean compare(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));
...

int compare(Date startDate, Date endDate, Date targetDate)
This method compares a target date with a date range.

return (compare(startDate, endDate, targetDate.getTime()));