Java Program to check the number is Even or Odd

Last Updated: 09 July, 2022

On this page, we are going to learn how to check whether the number is even or odd through the simple Java Program. So, let's first understand what is even and odd numbers.

In mathematics, even numbers are those which when divided by 2 leaves no remainder or as 0 while Odd numbers are those numbers that when divided by 2 leave a remainder of 1.

For example:

Even Numbers: 2, 4, 6, 8, 10....
Odd Numbers: 3, 5, 7, 9....

The sum of two even numbers or two odd numbers is an even number whereas the sum of an even and an odd number is an odd number.

Program 1: Checking whether number is even or odd using if-else

  public class EvenOddNumber {
    public static void main(String[] args) {
      isEvenOddNumber(8);
      isEvenOddNumber(15);
      isEvenOddNumber(24);
      isEvenOddNumber(31);
    }
    
    // method to check whether the number is even or odd
    static void isEvenOddNumber(int number) {
      
      // If the number is divisible by 2 then it's an even number else odd number
      if (number % 2 == 0)
        System.out.println(number + " is an Even Number.");
      else
        System.out.println(number + " is an Odd Number.");
    }
  }

Output

8 is an Even Number.
15 is an Odd Number.
24 is an Even Number.
31 is an Odd Number.

Program 2: Checking whether number is even or odd using Scanner class

  
  import java.util.Scanner;
  public class EvenOddNumber2 {
    public static void main(String[] args) {
      
      Scanner scanner = new Scanner(System.in);
      System.out.print("Enter the number: ");
      int number = scanner.nextInt();
      scanner.close();
      
      // If the number is divisible by 2 then it's an even number else odd number
      if (number % 2 == 0)
        System.out.println(number + " is an Even Number.");
      else
        System.out.println(number + " is an Odd Number.");
    }
  }

Output 1:

Enter the number: 4
4 is an Even Number.

Output 2:

Enter the number: 7
7 is an Odd Number.

Program 3: Checking whether number is even or odd using ternary operators

  
  import java.util.Scanner;
  public class EvenOddNumber3 {
    public static void main(String[] args) {
      
      Scanner scanner = new Scanner(System.in);
      System.out.print("Enter the number: ");
      int number = scanner.nextInt();
      scanner.close();
      
      // If the number is divisible by 2 then it's an even number else odd number
      String evenOdd = (number % 2 == 0) ? "Even Number" : "Odd Number";
      
      System.out.println(number + " is an " + evenOdd);
    }
  }

Output 1:

Enter the number: 180
180 is an Even Number

Output 2:

Enter the number: 221
221 is an Odd Number