五子棋是一种双人对弈的棋类游戏，通常在棋盘上进行。棋盘为 15×15 的方格，黑白双方各执棋子，轮流在棋盘的格点上落子，先在横、竖、斜线上形成五个相连的同色棋子者获胜。五子棋规则简单，易学难精，兼具攻防和谋略，是一种极具智慧和趣味性的游戏。

以下是使用Java编写的五子棋游戏的示例代码：

棋盘类：

public class ChessBoard {

    private int[][] board;
    private final int rows;
    private final int cols;
    private final int winCount;

    public ChessBoard(int rows, int cols, int winCount) {
        this.rows = rows;
        this.cols = cols;
        this.winCount = winCount;
        board = new int[rows][cols];
    }

    public int getRows() {
        return rows;
    }

    public int getCols() {
        return cols;
    }

    public int getWinCount() {
        return winCount;
    }

    public int getChessman(int row, int col) {
        return board[row][col];
    }

    public boolean canPutChessman(int row, int col) {
        return board[row][col] == 0;
    }

    public void putChessman(int row, int col, int player) {
        board[row][col] = player;
    }

    public boolean isFull() {
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < cols; j++) {
                if (board[i][j] == 0) {
                    return false;
                }
            }
        }
        return true;
    }

    public boolean hasWinner(int player) {
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < cols; j++) {
                if (board[i][j] == player) {
                    if (checkHorizontal(i, j, player)) {
                        return true;
                    }
                    if (checkVertical(i, j, player)) {
                        return true;
                    }
                    if (checkDiagonal1(i, j, player)) {
                        return true;
                    }
                    if (checkDiagonal2(i, j, player)) {
                        return true;
                    }
                }
            }
        }
        return false;
    }

    private boolean checkHorizontal(int row, int col, int player) {
        int count = 1;
        for (int j = col + 1; j < cols && board[row][j] == player; j++) {
            count++;
        }
        for (int j = col - 1; j >= 0 && board[row][j] == player; j--) {
            count++;
        }
        return count >= winCount;
    }

    private boolean checkVertical(int row, int col, int player) {
        int count = 1;
        for (int i = row + 1; i < rows && board[i][col] == player; i++) {
            count++;
        }
        for (int i = row - 1; i >= 0 && board[i][col] == player; i--) {
            count++;
        }
        return count >= winCount;
    }

    private boolean checkDiagonal1(int row, int col, int player) {
        int count = 1;
        for (int i = row + 1, j = col + 1; i < rows && j < cols && board[i][j] == player; i++, j++) {
            count++;
        }
        for (int i = row - 1, j = col - 1; i >= 0 && j >= 0 && board[i][j] == player; i--, j--) {
            count++;
        }
        return count >= winCount;
    }

    private boolean checkDiagonal2(int row, int col, int player) {
        int count = 1;
        for (int i = row + 1, j = col - 1; i < rows && j >= 0 && board[i][j] == player; i++, j--) {
            count++;
        }
        for (int i = row - 1, j = col + 1; i >= 0 && j < cols && board[i][j] == player; i--, j++) {
            count++;
        }
        return count >= winCount;
    }

}

游戏界面类：

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class GameUI extends JFrame {

    private final int rows;
    private final int cols;
    private final int winCount;
    private ChessBoard board;
    private int currentPlayer;
    private boolean gameOver;
    private final JPanel panel;

    public GameUI(int rows, int cols, int winCount) {
        this.rows = rows;
        this.cols = cols;
        this.winCount = winCount;
        setTitle("五子棋");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(cols * 40, rows * 40); // 每个棋子为正方形，大小为40
        setLocationRelativeTo(null);
        currentPlayer = 1;
        board = new ChessBoard(rows, cols, winCount);
        gameOver = false;
        panel = new JPanel() {
            @Override
            public void paintComponent(Graphics g) {
                super.paintComponent(g);
                for (int i = 0; i < rows; i++) {
                    for (int j = 0; j < cols; j++) {
                        int chessman = board.getChessman(i, j);
                        if (chessman == 1) {
                            g.setColor(Color.BLACK);
                            g.fillOval(j * 40 + 5, i * 40 + 5, 30, 30);
                        } else if (chessman == 2) {
                            g.setColor(Color.WHITE);
                            g.fillOval(j * 40 + 5, i * 40 + 5, 30, 30);
                            g.setColor(Color.BLACK);
                            g.drawOval(j * 40 + 5, i * 40 + 5, 30, 30);
                        }
                    }
                }
            }
        };
        panel.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                if (gameOver) {
                    return;
                }
                int col = e.getX() / 40;
                int row = e.getY() / 40;
                if (row < rows && col < cols && board.canPutChessman(row, col)) {
                    board.putChessman(row, col, currentPlayer);
                    panel.repaint();
                    if (board.hasWinner(currentPlayer)) {
                        gameOver = true;
                        System.out.println("Player " + currentPlayer + " wins.");
                    } else if (board.isFull()) {
                        gameOver = true;
                        System.out.println("Tie game.");
                    } else {
                        currentPlayer = 3 - currentPlayer; // 切换玩家
                    }
                }
            }
        });
        add(panel);
        setVisible(true);
    }

}

主程序：

public class Main {

    public static void main(String[] args) {
        new GameUI(15, 15, 5);
    }

}

在主程序中创建游戏界面对象，传入行数、列数和获胜所需连续棋子个数，即可开始游戏。

效果如下：

快去体验一下吧！