Java Program to Check Leap Year
What is a Leap Year?
Our earth orbits the sun in approximately 365.25 days which is called
Solar year. We only take 365 days for One year and the remaining .254 multiplied
with 4 and it comes out approximately 1 that is an extra day and this one day added
to every four years in February that is 28 + 1 =29, this extra day February the year is called Leap year.
In the following java program, we have input a year and check the year
leap year or not without any method.
import java.util.*;
public class LeapYearInJava
{
public static void
main(String[] args)
{
int year, flag;
Scanner sc = new Scanner
(System.in);
System.out.println("Enter
Year to Check Leap year or not:");
year = sc.nextInt();
flag = 0;
if(year % 4 == 0)
{
if( year % 100 == 0)
{
if ( year % 400
== 0)
{
flag = 1;
}
else
{
flag = 0;
}
}
else
{
flag = 1;
}
}
else
{
flag = 0;
}
if(flag == 1)
{
System.out.println(year + " is a Leap Year.");
}
else
{
System.out.println(year + " is not a Leap Year.");
}
}
}
In the following java program of Leap year we have created one method boolean
isLeapYear(int yr) to check leap year.
Java Program to Check Leap Year with Method
import java.util.*;
public class LeapYearInJavaWithMethod
{
int year;
boolean flag;
// Constructor to initialize
flag to true
public
LeapYearInJavaWithMethod()
{
flag = false;
}
// Leap year checking method
boolean isLeapYear(int yr)
{
year = yr;
if (((year % 4 == 0)
&& (year % 100!= 0)) || (year%400 == 0))
{
flag = true;
}
else
{
flag = false;
}
return flag;
}
// main method
public static void
main(String[] args)
{
int year;
boolean leap;
LeapYearInJavaWithMethod
ob = new LeapYearInJavaWithMethod();
Scanner sc = new
Scanner(System.in);
System.out.println("Enter Year to Check Leap year or not:");
year = sc.nextInt();
leap =
ob.isLeapYear(year);
if(leap == true)
{
System.out.println(year + " is a Leap Year.");
}
else
{
System.out.println(year + " is not a Leap Year.");
}
}
}
Output
Enter Year to Check Leap year or not:
2021
2021 is not a Leap Year.
Enter Year to Check Leap year or not:
2004
2004 is a Leap Year.
