ช่วยทำเกมส์ ยิงลูกแก้วแบบแนว Puzzle Bobble หน่อยครับ

package ballshoot;
import javax.swing.JFrame;
public class Menu extends javax.swing.JFrame {
    public Menu() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        initComponents();
        setResizable(false);
    }
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jButton3 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jLabel2 = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setAutoRequestFocus(false);
        getContentPane().setLayout(null);

        jButton3.setFont(new java.awt.Font("Lucida Calligraphy", 0, 36)); // NOI18N
        jButton3.setText("Start");
        jButton3.setActionCommand("Start");
        jButton3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton3ActionPerformed(evt);
            }
        });
        getContentPane().add(jButton3);
        jButton3.setBounds(260, 70, 140, 60);

        jButton2.setFont(new java.awt.Font("Lucida Calligraphy", 0, 36)); // NOI18N
        jButton2.setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
        jButton2.setLabel("Quit");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });
        getContentPane().add(jButton2);
        jButton2.setBounds(260, 150, 138, 60);

        jLabel2.setIcon(new javax.swing.ImageIcon("C:\\Users\\User\\Documents\\NetBeansProjects\\JavaApplication27\\bg.jpg")); // NOI18N
        getContentPane().add(jLabel2);
        jLabel2.setBounds(0, 0, 610, 320);

        setSize(new java.awt.Dimension(625, 359));
        setLocationRelativeTo(null);
    }// </editor-fold>                        

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    this.dispose();
    }                                        

    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {                                         
      Part1 f2 = new Part1();
      f2.setVisible(true);
      
    }                                        

    public static void main(String args[]) {
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(Menu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Menu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Menu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Menu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>
        java.awt.EventQueue.invokeLater(() -> {
            new Menu().setVisible(true);
        });
    }

    // Variables declaration - do not modify                     
    public javax.swing.JButton jButton2;
    public javax.swing.JButton jButton3;
    private javax.swing.JLabel jLabel2;
    // End of variables declaration                   
}

package ballshoot;
import java.awt.*;
import javax.swing.*;
import javax.swing.JFrame;
public class Part1 {
    public static void main(String[] args){
        JFrame window=new JFrame("Bubble Shooter");
        window.setSize(320,600);
        window.setResizable(false);
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setVisible(true);
        window.setLocationRelativeTo(null);
        window.add(new graphic());
        
    }

package ballshoot;
import java.awt.*;
import javax.swing.JPanel;
public class graphic extends JPanel{
    public graphic() {
       
    }
    @Override
    public void paint(Graphics g) {
        Image img = Toolkit.getDefaultToolkit().getImage("bg1.jpg");
        super.paint(g);
        g.drawImage(img,0,0,null);
        g.fillOval(10,35,30,30);
        g.setColor(Color.CYAN);
        Color[] colorBall = {Color.orange, Color.CYAN, Color.RED, Color.GREEN, Color.MAGENTA};
       for(int i = 0; i < 10; i++) {
       for(int j = 0; j < 5; j++){
       int r = (int) (Math.random()*5);
        Graphics2D g2d=(Graphics2D)g;
        g.fillOval(10+(i*30), (35+(j*30)), 30, 30); 
        g.setColor(colorBall[r]);
       }
    }
    }
    
    
}