1InputManager.java

import java.util.Scanner;

class InputManager {
    private static final Scanner sc = new Scanner(System.in);

    public static String inString() {
        return sc.next();
    }

    public static int inFieldChoice() {
        return sc.nextInt();
    }
}

2Player.java

class Player {
    private static int movesNum;
    private final String mark;
    private String name;

    public Player(String mark) {
        this.mark = mark;
    }

    public void setName() {
        this.name = InputManager.inString();
    }

    public String getName() {
        return this.name;
    }

    public String getMark() {
        return this.mark;
    }


    public static int getMovesNum() {
        return movesNum;
    }

    public static void incrementMovesNum() {
        movesNum++;
    }
}

3Board.java

class Board {
    private final String[] field;

    public Board() {
        field = new String[9];
        for (int i = 0; i < 9; i++) {
            field[i] = String.valueOf(i + 1);
        }
    }

    public void setField(Player player, int choice) {
        field[choice - 1] = player.getMark();
    }

    public boolean isFieldOccupied(int choice) {
        return field[choice - 1].equals("X") || field[choice - 1].equals("O");
    }

    public void printBoard() {
        for (int i = 0; i < 9; i++) {
            System.out.print(field[i]);
            if ((i + 1) % 3 == 0) {
                System.out.print("\n");
            }
        }
    }

    public String getField(int i) {
        return this.field[i];
    }
}

4Game.java

class Game {
    private static Player playerA;
    private static Player playerB;
    private static Board board;

    private Game() {
    }

    public static void initGame() {
        playerA = new Player("X");
        playerA.setName();

        playerB = new Player("O");
        playerB.setName();

        board = new Board();
        board.printBoard();
    }

    public static void runGameLoop() {
        Player curPlayer = playerA;
        Player prevPlayer = playerB;
        while (!isGameFinished(prevPlayer)) {
            promptToMove(curPlayer);
            makeMove(curPlayer, board);
            board.printBoard();

            // to be replaced with PlayerSwapper helper class
            Player temp = curPlayer;
            curPlayer = prevPlayer;
            prevPlayer = temp;
        }
    }

    private static void promptToMove(Player player) {
        System.out.print(player.getName() + "[" + player.getMark() + "]'s turn to move: ");
    }

    private static void makeMove(Player player, Board board) {
        boolean isValidMove = false;
        while (!isValidMove) {
            int choice = InputManager.inFieldChoice();
            try {
                if (!board.isFieldOccupied(choice)) {
                    board.setField(player, choice);
                    Player.incrementMovesNum();
                    isValidMove = true;
                }
                else {
                    System.out.println("Field already occupied. Choose new field");
                }
            }
            catch (ArrayIndexOutOfBoundsException e) {
                System.out.println("Chosen field is out of scope. Try again");
            }
        }
    }

    private static boolean isDraw() {
        return Player.getMovesNum() >= 9;
    }

    private static boolean isWon(Player player) {
        String playerMark = player.getMark();

        for (int i = 0; i <= 6; i += 3) {
            if (board.getField(i).equals(playerMark) && board.getField(i + 1).equals(playerMark) && board.getField(i + 2).equals(playerMark))
                return true;
        }

        for (int i = 0; i <= 2; i++) {
            if (board.getField(i).equals(playerMark) && board.getField(i + 3).equals(playerMark) && board.getField(i + 6).equals(playerMark))
                return true;
        }

        return (board.getField(0).equals(playerMark) && board.getField(4).equals(playerMark) && board.getField(8).equals(playerMark)) ||
               (board.getField(2).equals(playerMark) && board.getField(4).equals(playerMark) && board.getField(6).equals(playerMark));
    }

    private static boolean isGameFinished(Player player) {
        if (isDraw()) {
            System.out.println("Draw!");
            return true;
        }
        if (isWon(player)) {
            System.out.println(player.getName() + "[" + player.getMark() + "] has won");
            return true;
        }
        return false;
    }
}

5Main.java

class Main {
    public static void main(String[] args) {
        Game.initGame();
        Game.runGameLoop();
    }
}