How to put char in setter in Java

I’m trying to make a Calculator, so I have this Calculator.java and CalculatorTest.java using setters and getters.

public class Calculator {
  
    private int a;
  
    public int getA() {
      return a;
    }
    
    public void setA(int calcOneA) {
       this.a = calcOneA;
    }
  
    private int b;
    
    public int getB() {
      return b;
    }
    
    public void setB(int calcOneB) {
       this.b = calcOneB;
    }
        
    private char sign;
  
    public char getSign() {
      return sign;
    }
    
    public void setSign(char calcOneSign) {
        this.sign = calcOneSign;     
    }
}

import java.util.Scanner;

public class CalculatorTest {

    public static void main(String[] args) {
        Calculator calcOne = new Calculator();
        Scanner scanner = new Scanner(System.in);
        System.out.println("Введите первое число");
        calcOne.setA(scanner.nextInt());
        System.out.println("Введите знак математической операции");
        calcOne.setSign(nextLine());
        System.out.println("Введите второе число");
        calcOne.setB(scanner.nextInt());
      }
}

I don’t know how to put math sign into calcOne.setSign(). I tried nextLine() but it says can’t find symbol.

>Solution :

Your problem isn’t the setter.

For example, you can call calcOne.setSign('a'); on its own.

Now, to reproduce that for user input, you need to fix your scanner usage, for example

calcOne.setSign(scanner.nextLine().charAt(0));

However, if you’re typing something like 2 + 2, the + is called the operator, and it’s not always a specific index within the string (if you type this on its own line, it might be okay)