TicTacToe.java

import java.util.Random;

public class TicTacToe {
    //Default constructor for class
    TicTacToe(){

    }

    //Variables  needed throughout the class
    BoardState[][] board = new BoardState[3][3];
    enum BoardState {EMPTY, X, O, SCRATCH, CONTINUE}
    Random random = new Random();

    void randomPlacement(BoardState turn) {
        int row;
        int column;
        do {
            row = random.nextInt(3);
            column = random.nextInt(3);
        } while (board[row][column] != BoardState.EMPTY);
        board[row][column] = turn;
    }
    private BoardState checkWin() {

        for (int column = 0; column < board[0].length; column++) {
            if ((board[0][column] == board[1][column]) && (board[1][column] == board[2][column])) {
                return board[0][column];
            }
        }

        for (int row = 0; row < board[0].length; row++) {
            if ((board[row][0] == board[row][1]) && (board[row][1] == board[row][2])) {
                return board[row][0];
            }
        }

        if ((board[0][0] == board[1][1]) && (board[1][1] == board[2][2])) {
            return board[0][0];
        } else if ((board[0][2] == board[1][1]) && (board[1][1] == board[2][0])) {
            return board[0][2];
        }

        for (int row = 0; row < board.length; row++) {
            for (int column = 0; column < board[row].length; column++) {
                if (board[row][column] == BoardState.EMPTY) {
                    return BoardState.CONTINUE;
                }
            }
        }
        return BoardState.SCRATCH;
    }
    int getTotalWins() {
        int wins = 0;
        if (checkWin() == BoardState.X) {
            wins = wins + 1;
        }
        return wins;
    }
    void printBoard() {
        System.out.println("-------------");
        //Prints current game board
        for (int row = 0; row < (board.length); row++) {
            System.out.print("| ");
            for (int column = 0; column < board[row].length; column++) {
                if (board[row][column] == BoardState.X) {
                    System.out.print("X | ");
                } else if (board[row][column] == BoardState.O) {
                    System.out.print("O | ");
                } else if (board[row][column] == BoardState.EMPTY) {
                    System.out.print("  | ");
                }
            }
            System.out.println("\n-------------");
        }
        if (checkWin() == BoardState.SCRATCH) {
            System.out.println("It is a draw!");
        } else {
            System.out.println("The winner is " + checkWin() + "!");
        }
    }
    void playGame() {

        for (int row = 0; row < board.length; row++) {
            for (int column = 0; column < board[row].length; column++) {
                board[row][column] = BoardState.EMPTY;

            }
        }

        BoardState turn = BoardState.X;
        do {
            this.randomPlacement(turn);
            if (turn == BoardState.X) {
                turn = BoardState.O;
            } else {
                turn = BoardState.X;
            }
        } while (this.checkWin() == BoardState.CONTINUE || this.checkWin() == BoardState.EMPTY);
        this.printBoard();
    }
}