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Year isLeap() method in Java with Examples

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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–



Last Updated : 27 Nov, 2018
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