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

    // Main game loop
    while (gameActive) {
        printBoard();
        playerMove(scanner);
        gameActive = !checkWinner();  // If there's a winner, break the loop

        if (isBoardFull() && gameActive) {
            System.out.println("It's a tie!");
            gameActive = false;
        }

        if (gameActive) {
            switchPlayer();
        }
    }
    printBoard();
    System.out.println("Game over.");
}

// Function to print the current board
public static void printBoard() {
    System.out.println("-------------");
    for (int i = 0; i < 3; i++) {
        System.out.print("| ");
        for (int j = 0; j < 3; j++) {
            System.out.print(board[i][j] + " | ");
        }
        System.out.println();
        System.out.println("-------------");
    }
}

// Function to handle player move
public static void playerMove(Scanner scanner) {
    int row, col;
    while (true) {
        System.out.println("Player " + currentPlayer + ", enter your move (row and column): ");
        row = scanner.nextInt() - 1;
        col = scanner.nextInt() - 1;

        if (row >= 0 && row < 3 && col >= 0 && col < 3 && board[row][col] == ' ') {
            board[row][col] = currentPlayer;
            break;
        } else {
            System.out.println("This move is not valid, please try again.");
        }
    }
}

// Function to check for a winner
public static boolean checkWinner() {
    // Check rows and columns
    for (int i = 0; i < 3; i++) {
        if (board[i][0] == currentPlayer && board[i][1] == currentPlayer && board[i][2] == currentPlayer) {
            System.out.println("Player " + currentPlayer + " wins!");
            return true;
        }
        if (board[0][i] == currentPlayer && board[1][i] == currentPlayer && board[2][i] == currentPlayer) {
            System.out.println("Player " + currentPlayer + " wins!");
            return true;
        }
    }

    // Check diagonals
    if (board[0][0] == currentPlayer && board[1][1] == currentPlayer && board[2][2] == currentPlayer) {
        System.out.println("Player " + currentPlayer + " wins!");
        return true;
    }
    if (board[0][2] == currentPlayer && board[1][1] == currentPlayer && board[2][0] == currentPlayer) {
        System.out.println("Player " + currentPlayer + " wins!");
        return true;
    }

    return false;
}

// Function to check if the board is full (for a tie)
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;
}

// Function to switch between players
public static void switchPlayer() {
    currentPlayer = (currentPlayer == 'X') ? 'O' : 'X';
}