Create a input dialog with JOptionPane in Java

import javax.swing.JOptionPane;
/*from w w w .  ja v  a  2  s  .  c  o m*/
public class Main {
  public static void main(String[] args) {
    String s;
    s = JOptionPane.showInputDialog("Enter an integer:");
    int x = Integer.parseInt(s);
    System.out.println("You entered " + x + ".");
  }
}