// illustrate how to put up message and input dialog

import javax.swing.*;

public class dialogs
{
  public static void main(String args[])
    {
      String fn, sn;
      int n1, n2, sum;

      fn = JOptionPane.showInputDialog("Enter first number:");
      sn = JOptionPane.showInputDialog("Enter second number:");

      n1 = Integer.parseInt(fn);
      n2 = Integer.parseInt(sn);
      sum = n1 + n2;
      JOptionPane.showMessageDialog(null, "Sum of numbers = " + sum, 
				    "SUM VALUE", 
				    JOptionPane.PLAIN_MESSAGE);
      System.exit(0);

    }
}