JOptionPane Input to int

Question

I am trying to make a JOptionPane get an input and assign it to an int but I am getting some problems with the variable types.

I am trying something like this:

Answer 1

// sample code for addition using JOptionPane

import javax.swing.JOptionPane;

public class Addition {

    public static void main(String[] args) {

        String firstNumber = JOptionPane.showInputDialog("Input ");

        String secondNumber = JOptionPane.showInputDialog("Input ");

        int num1 = Integer.parseInt(firstNumber);
        int num2 = Integer.parseInt(secondNumber);
        int sum = num1 + num2;
        JOptionPane.showMessageDialog(null, "Sum is" + sum, "Sum of two Integers", JOptionPane.PLAIN_MESSAGE);
    }
}