Java Project – Tic Tac Toe Game

Program 1

import java.util.Scanner;

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

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        char currentPlayer = 'X';
        boolean gameEnded = false;

        System.out.println("Welcome to Tic Tac Toe!");
        printBoard();

        while (!gameEnded) {
            System.out.println("Player " + currentPlayer + ", enter your move (row and column: 1-3): ");
            int row = scanner.nextInt() - 1;
            int col = scanner.nextInt() - 1;

            // Check for valid input
            if (row < 0 || col < 0 || row > 2 || col > 2) {
                System.out.println("Invalid position. Try again.");
                continue;
            }

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

            board[row][col] = currentPlayer;
            printBoard();
            // Check for a winner
            if (checkWin(currentPlayer)) {
                System.out.println("Player " + currentPlayer + " wins!");
                gameEnded = true;
            } else if (isBoardFull()) {
                System.out.println("It's a draw!");
                gameEnded = true;
            } else {
                // Switch players
                currentPlayer = (currentPlayer == 'X') ? 'O' : 'X';
            }
        }

        scanner.close();
    }

    // Method to print the 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("\n-------------");
        }
    }

    // Method to check for win
    public static boolean checkWin(char player) {
        // Check rows and columns
        for (int i = 0; i < 3; i++) {
            if (
                (board[i][0] == player && board[i][1] == player && board[i][2] == player) ||
                (board[0][i] == player && board[1][i] == player && board[2][i] == player) )
                 {
                    return true;
               }
        }

        // Check diagonals
        if (
            (board[0][0] == player && board[1][1] == player && board[2][2] == player) ||
            (board[0][2] == player && board[1][1] == player && board[2][0] == player) )
             {
            return true;
           }

        return false;
    }

    // Method to check if board is full
    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;
    }
}