simpleCalculator

import java.util.Scanner;

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

        char operator;
        Double number1, number2, result;

        Scanner input = new Scanner(System.in);

        System.out.println("Plih operator: +,-,:, or x");
        operator = input.next().charAt(0);

        System.out.println("Masukan angka pertama: ");
        number1= input.nextDouble();

        System.out.println("Masukan angka kedua: ");
        number2 = input.nextDouble();

        switch(operator){
            case '+':
            result = number1 + number2;
            System.out.println(number1 + "+" + number2 + "=" +  result );
            break;

            case '-':
            result = number1 - number2;
            System.out.println(number1 + "-" + number2 + "=" +  result );
            break;

            case ':':
            result = number1 / number2;
            System.out.println(number1 + "/" + number2 + "=" +  result );
            break;

            case 'x':
            result = number1 * number2;
            System.out.println(number1 + "*" + number2 + "=" +  result );
            break;

            default :
            System.out.println("Invalid operator !");
            break;
        }
        input.close();
    }
}