六一用代码找回童心，花几分钟开发JAVA小游戏

个人介绍

光子郎.进行开发工作七年以上，目前涉及全栈领域并进行开发。会经常跟小伙伴分享前沿技术知识，java后台、web前端、移动端（Android，uniapp，小程序）相关的知识以及经验体会，不定期会有源码及框架的分享，如果你有相关的知识想要及时了解或者讨论，那么请关注光子郎.，点点文末小卡片，不定期会有免费的资源分享给大家，感谢支持~

人生格言

你要批评指点四周风景，首先你要爬上屋顶。

今天是六一，各位被选召的孩子们节日快乐。今天光子郎带大家用JAVA写几个简单的小游戏玩玩，用代码找回同心。废话少说，开整！

目录

猜数字游戏

贪吃蛇游戏

井字棋小游戏

石头、剪刀、布游戏

---

猜数字游戏

import java.util.Random;
import java.util.Scanner;

public class GuessNumberGame {

    public static void main(String[] args) {
        Random random = new Random();
        int targetNumber = random.nextInt(100) + 1;
        int guessCount = 0;

        System.out.println("欢迎来到猜数字游戏！");

        Scanner scanner = new Scanner(System.in);

        while (true) {
            System.out.print("请输入一个1到100之间的整数：");
            int guess = scanner.nextInt();
            guessCount++;

            if (guess == targetNumber) {
                System.out.println("恭喜你，猜对了！你总共猜了" + guessCount + "次。");
                break;
            } else if (guess < targetNumber) {
                System.out.println("猜的数字太小了，请再试一次。");
            } else {
                System.out.println("猜的数字太大了，请再试一次。");
            }
        }

        scanner.close();
    }
}

这个游戏的规则很简单，程序会随机生成一个1到100之间的整数，玩家需要通过输入数字来猜测这个数是多少。程序会根据玩家猜测的数字给出提示，直到玩家猜对为止。在游戏结束时，程序会告诉玩家猜测的次数。

贪吃蛇游戏

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

public class SnakeGame extends JFrame implements ActionListener {
    private static final int SCALE = 10;
    private static final int WIDTH = 40;
    private static final int HEIGHT = 40;
    private static final int DELAY = 100;

    private Snake snake;
    private Timer timer;
    private boolean gameOver;

    public SnakeGame() {
        setTitle("贪吃蛇游戏");
        setSize(WIDTH * SCALE, HEIGHT * SCALE);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setResizable(false);
        setLocationRelativeTo(null);

        snake = new Snake();
        timer = new Timer(DELAY, this);
        gameOver = false;

        addKeyListener(new KeyAdapter() {
            public void keyPressed(KeyEvent e) {
                int key = e.getKeyCode();
                if (key == KeyEvent.VK_UP && snake.getDirection() != Direction.DOWN)
                    snake.setDirection(Direction.UP);
                if (key == KeyEvent.VK_DOWN && snake.getDirection() != Direction.UP)
                    snake.setDirection(Direction.DOWN);
                if (key == KeyEvent.VK_LEFT && snake.getDirection() != Direction.RIGHT)
                    snake.setDirection(Direction.LEFT);
                if (key == KeyEvent.VK_RIGHT && snake.getDirection() != Direction.LEFT)
                    snake.setDirection(Direction.RIGHT);
            }
        });

        setVisible(true);
        startGame();
    }

    public void startGame() {
        timer.start();
    }

    public void paint(Graphics g) {
        g.setColor(Color.BLACK);
        g.fillRect(0, 0, WIDTH * SCALE, HEIGHT * SCALE);

        if (!gameOver) {
            snake.move();
            snake.draw(g);
            if (snake.checkCollision()) {
                gameOver = true;
            }
        } else {
            gameOver(g);
        }
    }

    public void gameOver(Graphics g) {
        g.setColor(Color.RED);
        g.setFont(new Font("Arial", Font.BOLD, 20));
        g.drawString("Game Over", WIDTH * SCALE / 2 - 70, HEIGHT * SCALE / 2);
    }

    public void actionPerformed(ActionEvent e) {
        repaint();
    }

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

import java.awt.*;
import java.util.*;

public class Snake {
    private ArrayList body;
    private Direction direction;
    private boolean grow;

    public Snake() {
        body = new ArrayList<>();
        body.add(new Point(20, 20));
        direction = Direction.RIGHT;
        grow = false;
    }

    public void setDirection(Direction direction) {
        this.direction = direction;
    }

    public Direction getDirection() {
        return direction;
    }

    public void move() {
        Point head = body.get(0);
        Point newHead = new Point(head.x, head.y);
        switch (direction) {
            case UP:
                newHead.y--;
                break;
            case DOWN:
                newHead.y++;
                break;
            case LEFT:
                newHead.x--;
                break;
            case RIGHT:
                newHead.x++;
                break;
        }
        body.add(0, newHead);
        if (!grow) {
            body.remove(body.size() - 1);
        } else {
            grow = false;
        }
    }

    public void draw(Graphics g) {
        g.setColor(Color.GREEN);
        for (Point p : body) {
            g.fillRect(p.x * SnakeGame.SCALE, p.y * SnakeGame.SCALE, SnakeGame.SCALE, SnakeGame.SCALE);
        }
    }

    public boolean checkCollision() {
        Point head = body.get(0);
        for (int i = 1; i < body.size(); i++) {
            if (head.equals(body.get(i))) {
                return true;
            }
        }
        int x = head.x;
        int y = head.y;
        return x < 0 || x >= SnakeGame.WIDTH || y < 0 || y >= SnakeGame.HEIGHT;
    }
}

public enum Direction {
    UP, DOWN, LEFT, RIGHT
}

这个贪吃蛇游戏使用Java的图形界面库（Swing）来实现，玩家通过控制方向键来控制蛇的移动，目标是吃到食物并避免碰到自己的身体或边界。当蛇的头部与身体或边界发生碰撞时，游戏结束。（如果你有兴趣，还可以尝试增加一些功能，比如计分系统、难度级别等等）

井字棋小游戏

import java.util.Scanner;

public class TicTacToeGame {
    private char[][] board;
    private char currentPlayer;
    private boolean gameOver;

    public TicTacToeGame() {
        board = new char[3][3];
        currentPlayer = 'X';
        gameOver = false;
        initializeBoard();
    }

    public void playGame() {
        System.out.println("欢迎来到井字棋游戏！");

        while (!gameOver) {
            printBoard();
            int[] move = getPlayerMove();
            makeMove(move[0], move[1]);
            if (checkWin()) {
                printBoard();
                System.out.println("玩家 " + currentPlayer + " 赢了！");
                gameOver = true;
            } else if (checkDraw()) {
                printBoard();
                System.out.println("平局！");
                gameOver = true;
            } else {
                switchPlayer();
            }
        }
    }

    private void initializeBoard() {
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 3; j++) {
                board[i][j] = '-';
            }
        }
    }

    private void printBoard() {
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 3; j++) {
                System.out.print(board[i][j] + " ");
            }
            System.out.println();
        }
    }

    private int[] getPlayerMove() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("玩家 " + currentPlayer + "，请输入您的下一步坐标（行 列）：");
        int row = scanner.nextInt();
        int col = scanner.nextInt();
        return new int[]{row, col};
    }

    private void makeMove(int row, int col) {
        if (row >= 0 && row < 3 && col >= 0 && col < 3 && board[row][col] == '-') {
            board[row][col] = currentPlayer;
        } else {
            System.out.println("无效的移动！请重新输入。");
            int[] move = getPlayerMove();
            makeMove(move[0], move[1]);
        }
    }

    private boolean checkWin() {
        for (int i = 0; i < 3; i++) {
            if (board[i][0] == currentPlayer && board[i][1] == currentPlayer && board[i][2] == currentPlayer) {
                return true;
            }
            if (board[0][i] == currentPlayer && board[1][i] == currentPlayer && board[2][i] == currentPlayer) {
                return true;
            }
        }
        if (board[0][0] == currentPlayer && board[1][1] == currentPlayer && board[2][2] == currentPlayer) {
            return true;
        }
        if (board[0][2] == currentPlayer && board[1][1] == currentPlayer && board[2][0] == currentPlayer) {
            return true;
        }
        return false;
    }

    private boolean checkDraw() {
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 3; j++) {
                if (board[i][j] == '-') {
                    return false;
                }
            }
        }
        return true;
    }

    private void switchPlayer() {
        if (currentPlayer == 'X') {
            currentPlayer = 'O';
        } else {
            currentPlayer = 'X';
        }
    }

    public static void main(String[] args) {
        TicTacToeGame game = new TicTacToeGame();
        game.playGame();
    }
}

经典的井字棋游戏，两位玩家轮流下棋，首先连成一条线的玩家获胜，如果棋盘填满且没有玩家获胜，则为平局。

石头、剪刀、布游戏

import java.util.Random;
import java.util.Scanner;

public class RockPaperScissorsGame {
    public static void main(String[] args) {
        String[] choices = { "石头", "剪刀", "布" };
        Scanner scanner = new Scanner(System.in);
        Random random = new Random();

        System.out.println("欢迎来到石头、剪刀、布游戏！");

        while (true) {
            System.out.print("请输入你的选择（石头、剪刀、布）或输入 q 退出游戏：");
            String playerChoice = scanner.nextLine();

            if (playerChoice.equalsIgnoreCase("q")) {
                break;
            }

            int randomIndex = random.nextInt(choices.length);
            String computerChoice = choices[randomIndex];

            System.out.println("你的选择：" + playerChoice);
            System.out.println("电脑的选择：" + computerChoice);

            String result = determineWinner(playerChoice, computerChoice);
            System.out.println(result);
            System.out.println();
        }

        System.out.println("游戏结束。谢谢你的参与！");
    }

    public static String determineWinner(String playerChoice, String computerChoice) {
        if (playerChoice.equalsIgnoreCase(computerChoice)) {
            return "平局！";
        } else if (
                (playerChoice.equalsIgnoreCase("石头") && computerChoice.equalsIgnoreCase("剪刀")) ||
                (playerChoice.equalsIgnoreCase("剪刀") && computerChoice.equalsIgnoreCase("布")) ||
                (playerChoice.equalsIgnoreCase("布") && computerChoice.equalsIgnoreCase("石头"))
        ) {
            return "你赢了！";
        } else {
            return "电脑赢了！";
        }
    }
}

这个石头、剪刀、布游戏需要输入自己的选择（石头、剪刀、布），然后与电脑进行对战，决定胜负。游戏会根据规则判断出胜负，并展示结果。可以输入 "q" 退出游戏。

希望这几款小游戏能够让大家找回当初敲代码的初心，虽然是谋生手段，但是也不妨碍我们乐在其中。这个六一，希望大家能够开心敲代码，用代码找回童心~ ❤❤❤❤❤❤

这次的分享就到这里，不要忘记关注光子郎，也点点文末小卡片，一定会有你喜欢的资源分享以及干货整理，我们下期再见啦，拜拜~