java cal

public class Calculator {
    public static void main(String[] args) {
        double num1;
        double num2;
        double result;

        try {
            num1 = Double.parseDouble(args[1]);
            num2 = Double.parseDouble(args[2]);

            switch(args[0])
            {
                case "+":
                    result = num1 + num2;
                    break;
                case "-":
                    result = num1 - num2;
                    break;
                case "x":
                    result = num1 * num2;
                    break;
                case "/":
                    result = num1 / num2;
                    break;
                default:
                    System.out.printf("Error! operator is not correct");
                    return;
            }

        System.out.printf("%.1f %c %.1f = %.1f", num1, args[0], num2, result);

        } catch (Exception e) {
            System.out.println("Something went wrong.");
        }

    }
}