Switch Case

import java.util.Scanner;

public class SwitchCase2 {
    // Simple Calculator--
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter your first number :");
        int a = sc.nextInt();

        System.out.println("Enter your second number :");
        int b = sc.nextInt();

        System.out.println("Which Operation you want to do :");
        char op = sc.next().charAt(0);

        switch (op) {
            case '+':
                System.out.printf("Addition of a and b is  %d", a + b);
                System.out.printf("\n");
                break;
            case '-':
                System.out.printf("Subtraction of a and b is %d", a - b);
                System.out.println("\n");
                break;

            case '*':
                System.out.printf("Multiplication of a and b is %d", a * b);
                System.out.printf("\n");
                break;
            case '/':
                System.out.printf("Division of a and b is %d", a / b);
                System.out.printf("\n");
                break;

            case '%':
                System.out.printf("Mod is %d", a % b);
                System.out.printf("\n");
                break;

            default:
                System.out.println("Invalid Operator");
        }
        sc.close();
    }
}