Game.java

package game.pong;

import javax.swing.JFrame;

public class Game extends JFrame{

    private static final long serialVersionUID = 3589805788478001754L;
    public static final int WIDTH = 600;
    public static final int HEIGHT = 400;

    public Game(){
        setSize(WIDTH, HEIGHT);
        setResizable(false);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setTitle("Pong");

        add(new Screen());
        setVisible(true);
    }

    public static void main(String[] args){

        new Game();
    }
}