Menu-Driven Calculator in Java

1import java.util.Scanner;
2
3public class Main {
4    public static void main(String[] args) {
5        Scanner sc = new Scanner(System.in);
6
7        System.out.println("1. Addition");
8        System.out.println("2. Subtraction");
9        System.out.println("3. Multiplication");
10        System.out.println("4. Division");
11        System.out.print("Enter your choice (1-4): ");
12        int choice = sc.nextInt();
13
14        System.out.print("Enter first number: ");
15        double a = sc.nextDouble();
16        System.out.print("Enter second number: ");
17        double b = sc.nextDouble();
18
19        double result;
20        switch (choice) {
21            case 1:
22                result = a + b;
23                System.out.println("Result = " + result);
24                break;
25            case 2:
26                result = a - b;
27                System.out.println("Result = " + result);
28                break;
29            case 3:
30                result = a * b;
31                System.out.println("Result = " + result);
32                break;
33            case 4:
34                if (b != 0) {
35                    result = a / b;
36                    System.out.println("Result = " + result);
37                } else {
38                    System.out.println("Cannot divide by zero");
39                }
40                break;
41            default:
42                System.out.println("Invalid choice");
43        }
44
45        sc.close();
46    }
47}