[hardwired]

Code:

import java.util.Scanner;
import javax.swing.JOptionPane;

public class Converter {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String choice;
        do {
            System.out.println("enter fahrenheit");
            int f = Integer.parseInt(scanner.nextLine());
            int celsius = convert(f);
            String s = String.valueOf(f) + " = " + celsius +
                       " celsius";
            JOptionPane.showMessageDialog(null, s, "Converter",
                                 JOptionPane.PLAIN_MESSAGE);
            System.out.println("More? \"y\" or any key");
            choice = scanner.nextLine();
        } while(choice.equals("y"));
        scanner.close();
    }

    private static int convert(int fahrenheit) {
        return 5*(fahrenheit - 32)/9;
    }
}