Java Utililty Methods Leap Year Check

List of utility methods to do Leap Year Check

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Description

The list of methods to do Leap Year Check are organized into topic(s).

Method

booleanisLeapYear(int year)
return the leap year for years 1581-8999. 
if (year < 1000)
    throw new IllegalArgumentException("year must be four-digits");
return (year % 4) == 0 && (year % 100 != 0 || year % 400 == 0);
booleanisLeapYear(int year)
is Leap Year 
boolean isLeapYear = false;
if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) {
    isLeapYear = true;
return isLeapYear;
booleanisLeapYear(int year)
is Leap Year 
Calendar calendar = Calendar.getInstance();
return ((GregorianCalendar) calendar).isLeapYear(year);
booleanisLeapYear(Integer year)
is Leap Year 
boolean result = false;
if (year % 100 == 0) {
    if (year % 400 == 0) {
        result = true;
} else if (year % 4 == 0) {
    result = true;
return result;
booleanisLeapYear(long year)
Gets if a year is a leap year 
return year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);
booleanisLeapYear(long year)
Determines if the specified year is a leap year in the Persian calendar. 
return LEAP_CACHE[(int) (year - START)];
booleanisLeapYear(String inputDate)
is Leap Year 
return isLeapYear(Integer.parseInt(inputDate.substring(0, 4)));
booleanleapYear(int year)
leap Year 
return year % 4 == 0 && year % 400 == 0;
booleanleapYear(int year)
leap Year 
boolean leap;
if (year % 4 == 0) {
    if (year % 100 == 0) {
        if (year % 400 == 0)
            leap = true;
        else
            leap = false;
    } else
...
booleanleapYear(int year)
leap Year 
if (year < 4) {
    return false;
return (year % 400 == 0) || (year % 100 != 0 && year % 4 == 0);