Java实现简单井字棋

好的，以下是一个简单的Java井字棋游戏实现：

import java.util.Scanner;

public class TicTacToe {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        char[][] board = new char[3][3];
        boolean player1 = true;
        int row, col;
        char symbol;
        
        // 初始化游戏面板
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 3; j++) {
                board[i][j] = '-';
            }
        }
        
        // 游戏循环
        while (true) {
            // 打印游戏面板
            printBoard(board);
            
            // 确定当前玩家和他的符号
            if (player1) {
                symbol = 'X';
            } else {
                symbol = 'O';
            }
            
            // 玩家输入坐标
            System.out.print("Player " + symbol + ", enter row (0-2): ");
            row = scanner.nextInt();
            System.out.print("Player " + symbol + ", enter column (0-2): ");
            col = scanner.nextInt();
            
            // 检查坐标是否有效
            if (row < 0 || row > 2 || col < 0 || col > 2) {
                System.out.println("Invalid input, try again.");
                continue;
            }
            
            // 检查坐标是否已经被占用
            if (board[row][col] != '-') {
                System.out.println("This cell is already occupied, try again.");
                continue;
            }
            
            // 将玩家的符号放入游戏面板
            board[row][col] = symbol;
            
            // 检查是否有玩家获胜
            if (checkWin(board)) {
                printBoard(board);
                System.out.println("Player " + symbol + " wins!");
                break;
            }
            
            // 检查是否平局
            if (checkTie(board)) {
                printBoard(board);
                System.out.println("It's a tie!");
                break;
            }
            
            // 切换玩家
            player1 = !player1;
        }
        
        scanner.close();
    }
    
    // 打印游戏面板
    private static void printBoard(char[][] board) {
        System.out.println("   0 1 2");
        for (int i = 0; i < 3; i++) {
            System.out.print(i + "  ");
            for (int j = 0; j < 3; j++) {
                System.out.print(board[i][j] + " ");
            }
            System.out.println();
        }
    }
    
    // 检查是否有玩家获胜
    private static boolean checkWin(char[][] board) {
        // 检查行
        for (int i = 0; i < 3; i++) {
            if (board[i][0] != '-' && board[i][0] == board[i][1] && board[i][0] == board[i][2]) {
                return true;
            }
        }
        
        // 检查列
        for (int i = 0; i < 3; i++) {
            if (board[0][i] != '-' && board[0][i] == board[1][i] && board[0][i] == board[2][i]) {
                return true;
            }
        }
        
        // 检查对角线
        if (board[0][0] != '-' && board[0][0] == board[1][1] && board[0][0] == board[2][2]) {
            return true;
        }
        if (board[0][2] != '-' && board[0][2] == board[1][1] && board[0][2] == board[2][0]) {
            return true;
        }
        
        // 没有获胜
        return false;
    }
    
    // 检查是否平局
    private static boolean checkTie(char[][] board) {
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 3; j++) {
                if (board[i][j] == '-') {
                    return false;
                }
            }
        }
        return true;
    }
}

以上代码实现了一个简单的井字棋游戏，玩家可以通过控制台输入坐标来下棋，程序会检查输入的坐标是否合法，并且检查是否有玩家获胜或者平局。