import javax.swing.JOptionPane;

public class SmallApp
{
        public static void main (String args[])
        {
                String Number;
                int number;

                Number =
                    JOptionPane.showInputDialog("Enter the number to square");
                number = Integer.parseInt(Number);
                JOptionPane.showMessageDialog(null, number + " squared is "
                    + Square(number));
                System.exit(0);

        }

        public static int Square (int n)
        {
                return n*n;
        }
}