帮我用java写一个五子棋游戏

好的，下面是一个简单的五子棋游戏的Java代码：

import java.util.Scanner;

public class Gobang {
    // 棋盘大小
    private static final int ROWS = 15;
    private static final int COLS = 15;

    // 棋子颜色
    private static final int EMPTY = 0; // 空格
    private static final int BLACK = 1; // 黑子
    private static final int WHITE = 2; // 白子

    // 记录棋局状态
    private static int[][] board = new int[ROWS][COLS];

    // 当前下棋方
    private static int player = BLACK;

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        // 初始化棋盘
        initBoard();

        // 开始下棋
        while (true) {
            // 打印棋盘
            printBoard();

            // 提示当前下棋方
            String playerStr = (player == BLACK) ? "黑子" : "白子";
            System.out.println(playerStr + "请落子(x y)：");

            // 输入落子位置
            int x = scanner.nextInt();
            int y = scanner.nextInt();

            // 判断落子是否合法
            if (x < 0 || x >= ROWS || y < 0 || y >= COLS || board[x][y] != EMPTY) {
                System.out.println("落子位置不合法，请重新输入！");
                continue;
            }

            // 落子
            board[x][y] = player;

            // 判断胜负
            if (isWin(player, x, y)) {
                System.out.println(playerStr + "获胜！");
                break;
            }

            // 切换下棋方
            player = (player == BLACK) ? WHITE : BLACK;
        }

        scanner.close();
    }

    // 初始化棋盘
    private static void initBoard() {
        for (int i = 0; i < ROWS; i++) {
            for (int j = 0; j < COLS; j++) {
                board[i][j] = EMPTY;
            }
        }
    }

    // 打印棋盘
    private static void printBoard() {
        System.out.print("  ");
        for (int j = 0; j < COLS; j++) {
            System.out.print(j + " ");
        }
        System.out.println();

        for (int i = 0; i < ROWS; i++) {
            System.out.print(i + " ");
            for (int j = 0; j < COLS; j++) {
                if (board[i][j] == EMPTY) {
                    System.out.print("+ ");
                } else if (board[i][j] == BLACK) {
                    System.out.print("● ");
                } else if (board[i][j] == WHITE) {
                    System.out.print("○ ");
                }
            }
            System.out.println();
        }
    }

    // 判断是否获胜
    private static boolean isWin(int player, int x, int y) {
        // 判断横向是否连成五子
        int count = 1;
        for (int i = x - 1; i >= 0; i--) {
            if (board[i][y] == player) {
                count++;
            } else {
                break;
            }
        }
        for (int i = x + 1; i < ROWS; i++) {
            if (board[i][y] == player) {
                count++;
            } else {
                break;
            }
        }
        if (count >= 5) {
            return true;
        }

        // 判断纵向是否连成五子
        count = 1;
        for (int j = y - 1; j >= 0; j--) {
            if (board[x][j] == player) {
                count++;
            } else {
                break;
            }
        }
        for (int j = y + 1; j < COLS; j++) {
            if (board[x][j] == player) {
                count++;
            } else {
                break;
            }
        }
        if (count >= 5) {
            return true;
        }

        // 判断左斜是否连成五子
        count = 1;
        for (int i = x - 1, j = y - 1; i >= 0 && j >= 0; i--, j--) {
            if (board[i][j] == player) {
                count++;
            } else {
                break;
            }
        }
        for (int i = x + 1, j = y + 1; i < ROWS && j < COLS; i++, j++) {
            if (board[i][j] == player) {
                count++;
            } else {
                break;
            }
        }
        if (count >= 5) {
            return true;
        }

        // 判断右斜是否连成五子
        count = 1;
        for (int i = x - 1, j = y + 1; i >= 0 && j < COLS; i--, j++) {
            if (board[i][j] == player) {
                count++;
            } else {
                break;
            }
        }
        for (int i = x + 1, j = y - 1; i < ROWS && j >= 0; i++, j--) {
            if (board[i][j] == player) {
                count++;
            } else {
                break;
            }
        }
        if (count >= 5) {
            return true;
        }

        // 没有连成五子
        return false;
    }
}

这个程序实现了一个简单的控制台五子棋游戏，有以下几个功能：

1. 初始化棋盘；
2. 打印棋盘；
3. 提示当前下棋方；
4. 输入落子位置；
5. 判断落子是否合法；
6. 落子；
7. 判断胜负；
8. 切换下棋方。