Lecture 20:- Even odd Numbers

In Java, you can determine whether a given number is even or odd using the modulo operator %. An even number is divisible by 2 without any remainder, while an odd number will have a remainder of 1 when divided by 2.

Here's a Java program to check whether a given number is even or odd:

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import java.util.Scanner; public class EvenOddChecker {    public static void main(String[] args) {        Scanner scanner = new Scanner(System.in);        System.out.print("Enter a number: ");        int number = scanner.nextInt();        // Check if the number is even or odd        if (number % 2 == 0) {            System.out.println(number + " is an even number.");        } else {            System.out.println(number + " is an odd number.");        }        scanner.close();    } }

Example output:

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Enter a number: 25 25 is an odd number.

In the program above, we take the user input and store it in the variable number. We then use the if statement to check if the number is even or odd. If the remainder of number divided by 2 is equal to 0, it is even, and the program prints the message "is an even number." Otherwise, if the remainder is 1, it is odd, and the program prints the message "is an odd number."

Remember that 0 is considered an even number since it is divisible by 2 without a remainder. Additionally, negative numbers can also be even or odd based on the same rule.