Ivan rekenmachine

import java.util.Scanner;

public class Application {

    public static void main(String[] args) {
            Scanner reader = new Scanner(System.in);

        System.out.print("Type a number: ") ;
        int a = Integer.parseInt(reader.nextLine() ) ;
        System.out.print("Type another number: ") ;
        int b = Integer.parseInt(reader.nextLine() ) ;
        System.out.print("Choose type of calculation: ");
        String cal = reader.nextLine() ;
        System.out.println(" ");

        int plus = a + b ;
        int keer = a * b ;
        int min = a - b ;
        double deel = (double) a / b;

        if (cal.equals("+")) {
            System.out.println(a + " + " + b + " = " + plus);
        } else if (cal.equals("-")) {
            System.out.println(a + " - " + b + " = " + min);
        } else if (cal.equals("*")) {
            System.out.println(a + " * " + b + " = " + keer);
        } else if (cal.equals("/")) {
            System.out.println(a + " / " + b + " = " + deel);
        } else {
            System.out.println("That does not exist!");
        }
        System.out.println(" ");
        System.out.println("The other anwers are: ");
        System.out.println(a + "+" + b + "=" + plus + ", ");
        System.out.println(a + "-" + b + "=" + min + ", ");
        System.out.println(a + "*" + b + "=" + keer + ", ");
        System.out.println(a + "/" + b + "=" + deel + ".");

    }
}