TicTacToe.java

import java.util.Scanner;

public class TicTacToe {
    static char[][] board = {
            {' ', ' ', ' '},
            {' ', ' ', ' '},
            {' ', ' ', ' '}
    };

    static Scanner sc = new Scanner(System.in);

    public static void printBoard() {
        System.out.println();
        System.out.println(" " + board[0][0] + " | " + board[0][1] + " | " + board[0][2]);
        System.out.println("---+---+---");
        System.out.println(" " + board[1][0] + " | " + board[1][1] + " | " + board[1][2]);
        System.out.println("---+---+---");
        System.out.println(" " + board[2][0] + " | " + board[2][1] + " | " + board[2][2]);
        System.out.println();
    }

    public static boolean checkWinner(char player) {
        for (int i = 0; i < 3; i++) {
            if (board[i][0] == player && board[i][1] == player && board[i][2] == player)
                return true;
            if (board[0][i] == player && board[1][i] == player && board[2][i] == player)
                return true;
        }

        if (board[0][0] == player && board[1][1] == player && board[2][2] == player)
            return true;

        if (board[0][2] == player && board[1][1] == player && board[2][0] == player)
            return true;

        return false;
    }

    public static boolean isBoardFull() {
        for (int i = 0; i < 3; i++)
            for (int j = 0; j < 3; j++)
                if (board[i][j] == ' ')
                    return false;
        return true;
    }

    public static void main(String[] args) {
        char player = 'X';

        while (true) {
            printBoard();

            System.out.println("Player " + player);
            System.out.print("Enter row (0-2): ");
            int row = sc.nextInt();

            System.out.print("Enter column (0-2): ");
            int col = sc.nextInt();

            if (row < 0 || row > 2 || col < 0 || col > 2) {
                System.out.println("Invalid position!");
                continue;
            }

            if (board[row][col] != ' ') {
                System.out.println("Cell already occupied!");
                continue;
            }

            board[row][col] = player;

            if (checkWinner(player)) {
                printBoard();
                System.out.println("Player " + player + " Wins!");
                break;
            }

            if (isBoardFull()) {
                printBoard();
                System.out.println("Match Draw!");
                break;
            }

            if (player == 'X')
                player = 'O';
            else
                player = 'X';
        }

        sc.close();
    }
}