写一段代码 Java实现弹球小游戏

好的，以下是一个简单的弹球小游戏的Java代码实现：

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

public class BallGame extends JFrame implements ActionListener {
    Timer timer;
    Ball ball;
    Paddle paddle;
    Brick[] bricks;

    public BallGame() {
        setTitle("Ball Game");
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setVisible(true);
        setResizable(false);

        ball = new Ball();
        paddle = new Paddle();
        bricks = new Brick[30];
        for (int i = 0; i < bricks.length; i++) {
            bricks[i] = new Brick(40 * i + 30, 50);
        }

        timer = new Timer(10, this);
        timer.start();

        setSize(400, 600);
        setLocationRelativeTo(null);
    }

    public void actionPerformed(ActionEvent e) {
        ball.move();
        paddle.move();

        for (int i = 0; i < bricks.length; i++) {
            if (ball.getBounds().intersects(bricks[i].getBounds())) {
                ball.reverseY();
                bricks[i].setDestroyed();
            }
        }

        if (ball.getBounds().intersects(paddle.getBounds())) {
            ball.reverseY();
        }

        if (ball.getY() > getHeight()) {
            JOptionPane.showMessageDialog(this, "Game Over");
            timer.stop();
            dispose();
        }

        repaint();
    }

    public void paint(Graphics g) {
        super.paint(g);
        ball.draw(g);
        paddle.draw(g);
        for (int i = 0; i < bricks.length; i++) {
            bricks[i].draw(g);
        }
    }

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

    class Ball {
        int x, y, dx, dy, size;

        public Ball() {
            x = 200;
            y = 500;
            dx = 2;
            dy = -2;
            size = 20;
        }

        public void move() {
            x += dx;
            y += dy;

            if (x < 0 || x > getWidth() - size) {
                dx = -dx;
            }

            if (y < 0) {
                dy = -dy;
            }
        }

        public void reverseY() {
            dy = -dy;
        }

        public int getX() {
            return x;
        }

        public int getY() {
            return y;
        }

        public Rectangle getBounds() {
            return new Rectangle(x, y, size, size);
        }

        public void draw(Graphics g) {
            g.setColor(Color.RED);
            g.fillOval(x, y, size, size);
        }
    }

    class Paddle {
        int x, y, dx, sizeX, sizeY;

        public Paddle() {
            x = 150;
            y = 550;
            dx = 0;
            sizeX = 100;
            sizeY = 10;
        }

        public void move() {
            x += dx;

            if (x < 0) {
                x = 0;
            }

            if (x > getWidth() - sizeX) {
                x = getWidth() - sizeX;
            }
        }

        public int getX() {
            return x;
        }

        public int getY() {
            return y;
        }

        public Rectangle getBounds() {
            return new Rectangle(x, y, sizeX, sizeY);
        }

        public void draw(Graphics g) {
            g.setColor(Color.BLUE);
            g.fillRect(x, y, sizeX, sizeY);
        }
    }

    class Brick {
        int x, y, sizeX, sizeY;
        boolean destroyed;

        public Brick(int x, int y) {
            this.x = x;
            this.y = y;
            sizeX = 40;
            sizeY = 20;
            destroyed = false;
        }

        public int getX() {
            return x;
        }

        public int getY() {
            return y;
        }

        public Rectangle getBounds() {
            return new Rectangle(x, y, sizeX, sizeY);
        }

        public boolean isDestroyed() {
            return destroyed;
        }

        public void setDestroyed() {
            destroyed = true;
        }

        public void draw(Graphics g) {
            if (!destroyed) {
                g.setColor(Color.GREEN);
                g.fillRect(x, y, sizeX, sizeY);
            }
        }
    }
}

这个游戏包含了一个小球，一个挡板和一些砖块，玩家可以通过控制挡板来让小球弹起并击碎砖块。