用java写一个五子棋游戏的代码

好的，下面是一个简单的五子棋游戏的Java代码示例。这个示例使用控制台作为游戏界面，没有使用图形化界面，仅供参考。

import java.util.Scanner;

public class FiveInARow {
    private char[][] board; // 棋盘
    private char player; // 当前玩家
    private int size; // 棋盘大小
    private int count; // 下棋步数

    public FiveInARow(int size) {
        this.size = size;
        board = new char[size][size];
        player = 'X';
        count = 0;
    }

    public void play() {
        Scanner scanner = new Scanner(System.in);
        while (true) {
            // 打印棋盘
            printBoard();

            // 获取下棋位置
            int row, col;
            do {
                System.out.print("Player " + player + ", enter row and column separated by space: ");
                row = scanner.nextInt();
                col = scanner.nextInt();
            } while (!isValidMove(row, col));

            // 下棋
            board[row][col] = player;
            count++;

            // 判断胜负
            if (hasWon(row, col)) {
                printBoard();
                System.out.println("Player " + player + " has won!");
                break;
            }

            // 判断平局
            if (count == size * size) {
                printBoard();
                System.out.println("It's a draw!");
                break;
            }

            // 切换玩家
            player = (player == 'X') ? 'O' : 'X';
        }
        scanner.close();
    }

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

    // 判断是否合法落子
    private boolean isValidMove(int row, int col) {
        if (row < 0 || row >= size || col < 0 || col >= size) {
            return false;
        }
        if (board[row][col] != 0) {
            return false;
        }
        return true;
    }

    // 判断是否胜利
    private boolean hasWon(int row, int col) {
        // 判断行
        int count = 1;
        for (int i = col - 1; i >= 0 && board[row][i] == player; i--) {
            count++;
        }
        for (int i = col + 1; i < size && board[row][i] == player; i++) {
            count++;
        }
        if (count >= 5) {
            return true;
        }

        // 判断列
        count = 1;
        for (int i = row - 1; i >= 0 && board[i][col] == player; i--) {
            count++;
        }
        for (int i = row + 1; i < size && board[i][col] == player; i++) {
            count++;
        }
        if (count >= 5) {
            return true;
        }

        // 判断对角线
        count = 1;
        for (int i = row - 1, j = col - 1; i