The isLeap() method of Year class in Java is used to check if this Year object is a leap year or not according to the proleptic calendar system rules.
A year is a leap year if it has 366 days in it.
According to the proleptic calendar system rules, a year is a Leap year if:
- If it is divisible by 4.
- It is not divisible by 100 but it can be divisible by 400.
Syntax:
public boolean isLeap()
Parameter: This method does not accepts any parameter.
Return Value: It returns a boolean True value if this Year object’s value is a leap year according to the proleptic calendar system rules, otherwise it returns False.
Below programs illustrate the isLeap() method of Year in Java:
Program 1:
// Program to illustrate the isLeap() method  import java.util.*;import java.time.*;  public class GfG {    public static void main(String[] args)    {        // Create first Year object        Year firstYear = Year.of(2016);          // Check if this year object's value is        // a leap year or not        System.out.println(firstYear.isLeap());    }} |
Output:
true
Program 2:
// Program to illustrate the isLeap() method  import java.util.*;import java.time.*;  public class GfG {    public static void main(String[] args)    {        // Create first Year object        Year firstYear = Year.of(1990);          // Check if this year object's value is        // a leap year or not        System.out.println(firstYear.isLeap());    }} |
Output:
false
Reference: https://docs.oracle.com/javase/8/docs/api/java/time/Year.html#isLeap–
