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Operators & Expressions

Java Program: Find Leap Year with Combined Operators

Leap Year Rules

A year is a leap year if:

• It is divisible by 400, OR
• It is divisible by 4 AND not divisible by 100

import java.util.Scanner;
 
public class LeapYearCheck {
    public static void main(String[] args) {
 
        Scanner sc = new Scanner(System.in);
 
        System.out.print("Enter a year: ");
        int year = sc.nextInt();
 
        boolean isLeapYear = (year % 400 == 0) ||
                             (year % 4 == 0 && year % 100 != 0);
 
        System.out.println("\n------ Leap Year Result ------");
 
        if (isLeapYear) {
            System.out.println(year + " is a Leap Year.");
        } else {
            System.out.println(year + " is NOT a Leap Year.");
        }
 
        sc.close();
    }
}

 
OUTPUT 1:
INPUT : 
Enter a year: 2024

OUTPUT :
------ Leap Year Result ------
2024 is a Leap Year.

OUTPUT 2:
INPUT : 
Enter a year: 1900

OUTPUT :
------ Leap Year Result ------
1900 is NOT a Leap Year.

OUTPUT 3:
INPUT : 
Enter a year: 2000

OUTPUT :
------ Leap Year Result ------
2000 is a Leap Year.

Explanation

1. Input Year

int year = sc.nextInt();

• Reads the year from the user.

2. Combined Logical Expression

(year % 400 == 0) || (year % 4 == 0 && year % 100 != 0)

Breakdown:

• year % 400 == 0 → Leap year (century rule)
• year % 4 == 0 → Divisible by 4
• year % 100 != 0 → Not a century year
• && → AND operator
• || → OR operator

3. Boolean Variable

boolean isLeapYear = ...

• Stores the result of the logical expression.

4. Output Decision

if (isLeapYear)

• Displays result based on boolean value.

✅ Logical Operators Used