Java Programming Tutorial: How to Find Even or Odd Numbers - Step by Step Guide

Understanding Even and Odd Numbers     

    In this blog, we will learn how to find out whether the entered number is even or odd. First of all, what is an even number? A whole number which a divisible by 2 is an even number. A whole number which is not divisible by 2 is an odd number.

    So in the code, we have to take input as a positive integer and divide it by 2. If the remainder is 0 then it is even no else it is an odd number.

Algorithm of Even and Odd Numbers

Code

import java.util.Scanner;

public class EvenOdd {
public static void main(String[] args) {
int userNumber, remainder;

Scanner scanner = new Scanner(System.in);

System.out.println("Enter a whole number : ");

userNumber = scanner.nextInt();

// checking whether is even number or off
if (userNumber > 0) {
remainder = userNumber % 2;

if (remainder == 0) {
// It is an even number
System.out.println("It is an even number");
} else {
// It is an odd number
System.out.println("It is an odd number");
}
} else {
System.out.println("Invalid number");
}
}
}

    Hope you like this blog. If you still have any doubts then please let me know in the comment. Happy Coding!!!