Example: Check Number Sign with If-Else in Java

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// Check Number Sign with If-Else
import java.util.Scanner;

// Main class containing the entry point of the program
public class Main {
    public static void main(String[] args) {
        // Step 1: Create a Scanner object to read user input
        Scanner scanner = new Scanner(System.in);

        // Step 2: Prompt the user to enter a number
        System.out.print("Enter a number: ");
        double number = scanner.nextDouble(); // Read the number (using double for flexibility)

        // Step 3: Check the sign of the number using if-else if-else
        if (number > 0) {
            System.out.println(number + " is a positive number.");
        } else if (number < 0) {
            System.out.println(number + " is a negative number.");
        } else {
            System.out.println(number + " is zero.");
        }

        // Step 4: Close the scanner
        scanner.close();
    }
}