java彩虹雨小游戏代码

以下是一个简单的 Java 彩虹雨小游戏代码示例：

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

public class RainbowGame extends JFrame implements ActionListener {
    private static final long serialVersionUID = 1L;
    private static final int WIDTH = 400;
    private static final int HEIGHT = 400;
    private static final int DELAY = 50;
    private static final int FONT_SIZE = 30;
    private static final String[] COLORS = {"red", "orange", "yellow", "green", "blue", "indigo", "violet"};
    private static final Random rand = new Random();
    private Timer timer;
    private JLabel textLabel;
    private Color currentColor;

    public RainbowGame() {
        super("Rainbow Game");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(WIDTH, HEIGHT);
        setResizable(false);
        setLocationRelativeTo(null);
        setLayout(new BorderLayout());
        textLabel = new JLabel("Press the space bar to start.", JLabel.CENTER);
        textLabel.setFont(new Font("Arial", Font.BOLD, FONT_SIZE));
        add(textLabel, BorderLayout.CENTER);
        timer = new Timer(DELAY, this);
        setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == timer) {
            currentColor = getRandomColor();
            textLabel.setForeground(currentColor);
        }
    }

    private Color getRandomColor() {
        int index = rand.nextInt(COLORS.length);
        switch (COLORS[index]) {
            case "red":
                return Color.RED;
            case "orange":
                return Color.ORANGE;
            case "yellow":
                return Color.YELLOW;
            case "green":
                return Color.GREEN;
            case "blue":
                return Color.BLUE;
            case "indigo":
                return new Color(75, 0, 130); // dark blue
            case "violet":
                return new Color(148, 0, 211); // dark violet
            default:
                return Color.BLACK;
        }
    }

    private void startGame() {
        textLabel.setText("Rainbow Game!");
        textLabel.setForeground(Color.BLACK);
        timer.start();
    }

    private void endGame() {
        timer.stop();
        textLabel.setText("Game over.");
        textLabel.setForeground(Color.BLACK);
    }

    public static void main(String[] args) {
        RainbowGame game = new RainbowGame();
        game.addKeyListener(new KeyAdapter() {
            public void keyPressed(KeyEvent e) {
                if (e.getKeyCode() == KeyEvent.VK_SPACE) {
                    if (game.timer.isRunning()) {
                        game.endGame();
                    } else {
                        game.startGame();
                    }
                }
            }
        });
    }
}

这个小游戏的规则很简单：按下空格键开始游戏，每隔一段时间，文字颜色会随机变化，直到用户再次按下空格键结束游戏。