Calaculates.java

import java.util.Scanner;

public class Calaculates {

    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        System.out.println("Enter 'a' to add, 's' to subtract, 'm' to multiply, 'd' to divide ");
    String operation = scan.next();

    System.out.println("Enter the 1st number: ");
    int firstNumber = scan.nextInt();

    System.out.println("Enter the second number: ");
    int secondNumber = scan.nextInt();

    operateTwonumbers( operation, firstNumber, secondNumber);
    }

    public static void operateTwonumbers(String operation, int firstNumber, int secondNumber){
        System.out.print("The answer is: ");
        if(operation.charAt(0)=='a'){
        System.out.println( firstNumber + secondNumber);
    }else if(operation.charAt(0)=='s'){
        System.out.println( firstNumber - secondNumber);
    }else if(operation.charAt(0)=='m'){
        System.out.println( firstNumber*secondNumber);
    }else if(operation.charAt(0)=='d'){
        System.out.println( firstNumber/secondNumber);
    }

    }
}