Pong.java

import javax.swing.JFrame;

public class Pong extends JFrame {
    private static final long serialVersionUID = 3778864206257829821L;

    public Pong() {
        add(new Board());
        setTitle("Pong");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(680, 510);
        setVisible(true);
        setResizable(false);
        setLocation(5, 5);
    }

    public static void main(String[] args) {
        new Pong();
    }
}