Thread: Calculator Using JOptionPane

Guys need help on this. I'm making a calculator using a JOptionPane. But the Operator part where I can choose what operation to be use was stopped performing. Thank you guys
*

import java.util.Scanner;
import javax.swing.JOptionPane;
 
public class Calculator
{
    public static void main(String [] args)
    {
        Scanner norbel = new Scanner(System.in);
 
        int answer;
 
        String FNumber = JOptionPane.showInputDialog("Enter first Integer: ");
        int fnum = Integer.parseInt(FNumber);
        fnum = norbel.nextInt();     
        String operator = JOptionPane.showInputDialog("Operation:\n 1.Addition\n 2.Subtraction\n 3.Multiplication\n 4.Division\n");
        Integer opt = Integer.parseInt(operator);
 
 
        if(opt == 1)
        {
            String opt1 = JOptionPane.showInputDialog("Enter second Integer: ");
            int snum = Integer.parseInt(opt1);
            snum = norbel.nextInt();
            answer = fnum + snum;
            String ans = "Answer" +answer+ "!";
            JOptionPane.showMessageDialog(null,answer);
 
        if(opt == 2)
        {
            String opt2 = JOptionPane.showInputDialog("Enter second Integer: ");
            int snum = Integer.parseInt(opt2);
            snum = norbel.nextInt();
            answer = fnum -  snum;
            String ans = "Answer" +answer+ "!";
            JOptionPane.showMessageDialog(null,ans);
        }
        if(opt == 3)
        {
            String opt3 = JOptionPane.showInputDialog("Enter second Integer: ");
            int snum = Integer.parseInt(opt3);
            snum = norbel.nextInt();
            answer = fnum * snum;
            String ans = "Answer" +answer+ "!";
            JOptionPane.showMessageDialog(null,ans);
        }
        if(opt == 4)
        {
            String opt4 = JOptionPane.showInputDialog("Enter second Integer: ");
            int snum = Integer.parseInt(opt4);
            snum = norbel.nextInt();
            answer = fnum / snum;
            String ans = "Answer" +answer+ "!";
            JOptionPane.showMessageDialog(null,ans);
        }
        else
        {
            String error = "Error";
            JOptionPane.showMessageDialog(null, error);
        }
 
    }
}

Right now your code has lost all formatting and is all but unreadable. Please don't highlight your code with color but rather look at the forum FAQ's and use code tags to help your posted code retain its formatting and be readable.