编程打卡：面向对象程序设计

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

public class Minesweeper {

    private static final int ROWS = 10;
    private static final int COLUMNS = 10;
    private static final int MINES = 10;

    private final JFrame frame = new JFrame("Minesweeper");
    private final JPanel boardPanel = new JPanel(new GridLayout(ROWS, COLUMNS));
    private final JButton[][] buttons = new JButton[ROWS][COLUMNS];
    private final boolean[][] mines = new boolean[ROWS][COLUMNS];
    private boolean gameOver = false;

    public Minesweeper() {
        for (int i = 0; i < ROWS; i++) {
            for (int j = 0; j < COLUMNS; j++) {
                buttons[i][j] = new JButton();
                buttons[i][j].addActionListener(new ActionListener() {
                    @Override
                    public void actionPerformed(ActionEvent e) {
                        if (gameOver) {
                            return;
                        }

                        if (mines[i][j]) {
                            gameOver = true;
                            buttons[i][j].setText("*");
                        } else {
                            int count = 0;
                            for (int row = i - 1; row <= i + 1; row++) {
                                for (int col = j - 1; col <= j + 1; col++) {
                                    if (row >= 0 && row < ROWS && col >= 0 && col < COLUMNS && mines[row][col]) {
                                        count++;
                                    }
                                }
                            }

                            if (count == 0) {
                                buttons[i][j].setText("");
                                for (int row = i - 1; row <= i + 1; row++) {
                                    for (int col = j - 1; col <= j + 1; col++) {
                                        if (row >= 0 && row < ROWS && col >= 0 && col < COLUMNS && !mines[row][col]) {
                                            buttons[row][col].doClick();
                                        }
                                    }
                                }
                            } else {
                                buttons[i][j].setText(String.valueOf(count));
                            }
                        }
                    }
                });
                boardPanel.add(buttons[i][j]);
            }
        }

        frame.add(boardPanel);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);

        placeMines();
    }

    private void placeMines() {
        Random random = new Random();
        for (int i = 0; i < MINES; i++) {
            int row = random.nextInt(ROWS);
            int col = random.nextInt(COLUMNS);
            mines[row][col] = true;
        }
    }

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