import javax.swing.*;

public class Hello
{
   public static void main(String[] args)
   {
      // display a greeting in the console window

      System.out.println("Hello, World!");
      JOptionPane.showMessageDialog("Hello, World!");
      String yoName=JOptionPane.showInputDialog(null,"What's your name?");
      JOptionPane.showMessageDialog("Hello, " + yoName + "!");
   }
}