Create dialog with default options with JOptionPane in Java

import java.awt.Component;
// ww w  .j  a  v  a 2  s  .c o  m
import javax.swing.JOptionPane;

public class Main {
  public static void main(String[] argv) throws Exception {
    int i = ok("Done.");
    System.out.println("ret : " + i);
  }

  public static int ok(String theMessage) {
    int result = JOptionPane.showConfirmDialog((Component) null, theMessage,
        "alert", JOptionPane.DEFAULT_OPTION);
    return result;
  }
}