earl.java

import java.util.Scanner;

public class earl {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        System.out.println("===== JAVA CALCULATOR =====");

        System.out.print("Enter first number: ");
        double num1 = scanner.nextDouble();

        System.out.print("Enter operator (+, -, x, /): ");
        char operator = scanner.next().charAt(0);

        System.out.print("Enter second number: ");
        double num2 = scanner.nextDouble();

        double result;

        switch (operator) {
            case '+':
                result = num1 + num2;
                break;

            case '-':
                result = num1 - num2;
                break;

            case 'x':
            case '*':
                result = num1 * num2;
                break;

            case '/':
                if (num2 == 0) {
                    System.out.println("Error: Cannot divide by zero.");
                    scanner.close();
                    return;
                }
                result = num1 / num2;
                break;

            default:
                System.out.println("Invalid operator!");
                scanner.close();
                return;
        }

        System.out.println("Result: " + result);

        scanner.close();
    }
}