JOptionPane

Question

import java.util.Scanner;
import javax.swing.JOptionPane;
public class Main {

public static void main(String[] args) {
String question = JOptionPane.showInputDialog("la racine de 16");
Scanner in = new Scanner (System.in);
int answer = in.nextInt();
do
{
question = JOptionPane.showInputDialog("la racine de 16");

}while(answer != 4);
JOptionPane.showMessageDialog(null,"correct answer is "+answer);

}

}