loopThatSwitch.java

import javax.swing.JOptionPane;
public class loopThatSwitch
{
    public static void main(String [] args)
    {
        for (int i = 0; i < 1; i++)
        {
        String options = JOptionPane.showInputDialog("[A] Add\n[B] Subtract\n[C] Multiply\n[exit] To exit program");




        switch(options) {

            case "exit":
            System.exit(0);
            break;
            case "A":
            String addx = JOptionPane.showInputDialog("Add");
            int add1 = Integer.parseInt(addx);
            String addy = JOptionPane.showInputDialog("Add");
            int add2 = Integer.parseInt(addy);
            int result1 = add1 + add2;
            JOptionPane.showMessageDialog(null, addx +" + " + addy + " = " + result1);
            break;

            case "B":
            String minusx = JOptionPane.showInputDialog("Subtract");
            int sub1 = Integer.parseInt(minusx);
            String minusy = JOptionPane.showInputDialog("Subtract");
            int sub2 = Integer.parseInt(minusy);
            int result2 = sub1 - sub2;
            JOptionPane.showMessageDialog(null, minusx + " - " + minusy + " = " + result2);
            break;

            case "C":
            String timesx = JOptionPane.showInputDialog("Multiply");
            int  mul1 = Integer.parseInt(timesx);
            String timesy = JOptionPane.showInputDialog("Multiply");
            int mul2 = Integer.parseInt(timesy);
            int result3 = mul1 * mul2;
            JOptionPane.showMessageDialog(null, timesx + " x " + timesy + " = " + result3);
            break;

            default:
            JOptionPane.showMessageDialog(null, "Please select operations", "Error", JOptionPane.ERROR_MESSAGE);
            break;
        }

        }

    }
}