Ball correct

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;


//@SuppressWornings("serial")

public class Ball extends JFrame implements ActionListener {




    static final int MAX_BALL = 3;
    static final int SQUERE_WIDTH = 9;
    static final int SQUERE_HIGHT = 9;
    static final int BALL_SIZE = 45;
    static final int PANEL_WIDTH = 405;
    static final int PANEL_HEIGHT = 405 ;

    final int FRAME_WIDTH =540;
    final int FRAME_HEIGHT = 455;

    public static int points;

    final Font font1 = new Font("System", 1, 11);
    final Font font2 = new Font("System", 1, 22);


    static final Color BACKGROUNG_COLOUR = new Color(225, 141, 198);

    static final Color [] SQUERE_COLOUR =
            {
                    new Color(171, 225, 224),
                    new Color(100, 225, 100),
                    new Color(225, 225, 0),
                    new Color(85, 170, 255)
            };

    static final Color[] BALL_COLOUR;
    JPanel panel;
    static JLabel lPoints;
    JLabel lText;
    JLabel lLegend1;
    JLabel lLegend2;
    JLabel lLegend3;
    JButton bStart;
    static GameArea gameArea;

    static {
        BALL_COLOUR = new Color[]{Color.RED, Color.BLUE, Color.GREEN, Color.CYAN, Color.ORANGE};
    }


    public Ball()
    {
        super("Ball");
        this.setDefaultCloseOperation(3);
        this.panel = new JPanel();
        gameArea = new GameArea();
        this.lText = new JLabel("POINTS", 0);
        lPoints = new JLabel("0", 0);
        this.lLegend1 = new JLabel("Free Spaces", 0);
        this.lLegend2 = new JLabel("Selected Spaces", 0);
        this.lLegend3 = new JLabel("New Ball");
        this.bStart = new JButton("New Game");
        this.panel.setLayout((LayoutManager)null);
        this.panel.setBackground(BACKGROUNG_COLOUR);
        gameArea.setBounds(10, 10, 405, 405);
        gameArea.setBackground(SQUERE_COLOUR[0]);
        this.lText.setFont(this.font1);
        this.lText.setBounds(425, 40, 100, 30);
        this.lText.setForeground(Color.WHITE);
        lPoints.setFont(this.font2);
        lPoints.setBounds(425, 60, 100, 30);
        lPoints.setForeground(Color.WHITE);
        this.lLegend1.setFont(this.font1);
        this.lLegend1.setBounds(425, 285, 100, 30);
        this.lLegend1.setForeground(SQUERE_COLOUR[1]);
        this.lLegend2.setFont(this.font1);
        this.lLegend2.setBounds(425, 305, 100, 30);
        this.lLegend2.setForeground(SQUERE_COLOUR[2]);
        this.lLegend3.setFont(this.font1);
        this.lLegend3.setBounds(425, 325, 100, 30);
        this.lLegend3.setForeground(SQUERE_COLOUR[3]);
        this.bStart.setBounds(425, 385, 100, 30);
        this.panel.add(gameArea);
        this.panel.add(this.lText);
        this.panel.add(lPoints);
        this.panel.add(this.lLegend1);
        this.panel.add(this.lLegend2);
        this.panel.add(this.lLegend3);
        this.panel.add(this.bStart);
        this.add(this.panel);
        this.bStart.addActionListener(this);
        this.setSize(540, 455);
        this.setLocationRelativeTo((Component)null);
        this.setResizable(false);
        this.setVisible(true);
    }

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

    public void actionPerformed(ActionEvent e) {
        if (points > 0) {
            Object[] opcje = new Object[]{"NEW GAME", "Return"};
            int opcja = JOptionPane.showOptionDialog((Component)null, "Napewno chcesz przerwać istniejącą rozgrywke?", "Rozpoczęcie od początku", 0, 3, (Icon)null, opcje, opcje[0]);
            if (opcja == 0) {
                gameArea.newGame();
                gameArea.printSquere();
                lPoints.setText("0");
            }
        } else {
            gameArea.newGame();
            gameArea.printSquere();
            lPoints.setText("0");
        }

    }
}