Java program to check Leap year or not

 Java program to check Leap year or not

1. Java program to check Leap year or not using if-else statement:

Program:

import java.io.*;
import java.util.*;
class LeapYear
{
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
System.out.println("Enter the year");
int yr=sc.nextInt();
if((yr%400==0)||(yr%100!=0 && yr%4==0))
{
System.out.println(yr+ " is a leap year");
}
else
{
System.out.println(yr+" is not a leap year");
}
}
}

Output:

Enter the year
2000
2000 is a leap year

Enter the year
2001
2001 is not a leap year

2. Java program to check Leap year or not using Buffered Reader class:

Program:

import java.util.*;
import java.lang.*;
import java.io.*;
class LeapYear
{
public static void main(String args[]) throws Exception
{
BufferedReader br= new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter the year");
int yr= Integer.parseInt(br.readLine());
if((yr%400==0)||(yr%100!=0 && yr%4==0))
{
System.out.println(yr+ " is a leap year");
}
else
{
System.out.println(yr+" is not a leap year");
}
}
}

Output:

Enter the year
2001
2001 is not a leap year

3. Java program to check Leap year or not using Command Line Argument:

Program:

import java.util.*;
class LeapYear
{
public static void main(String args[])
{
int yr= Integer.parseInt(args[0]);
System.out.println(yr);
if((yr%400==0)||(yr%100!=0 && yr%4==0))
{
System.out.println(yr+ " is a leap year");
}
else
{
System.out.println(yr+" is not a leap year");
}
}
}

Compile:

javac LeapYear.java

Run:

java LeapYear 2004
2004 is a leap year