UML Class Diagram for Tic$-$Tac$-$Toe System

$1.$ Model Class

Attributes:

private Marker$[][]$ gameBoard

private Marker currentTurn

private Marker winner

Methods:

public Model$()$

public void setState$($int x$,$ int y$)$ throws GameOverException, IllegalMarkerPlacementException

private void detectWinner$()$

public Marker$[][]$ getGameBoard$()$

public Marker getCurrentTurn$()$

public Marker getWinner$()$

public void resetModel$()$

$2.$ Marker Enum

Constants:

NONE

X

O

$3.$ IllegalMarkerPlacementException Class

Constructors:

public IllegalMarkerPlacementException$()$

public IllegalMarkerPlacementException$($String message$)$

$4.$ GameOverException Class

Constructors:

public GameOverException$()$

public GameOverException$($String message$)$

$5.$ View Class $($extends JFrame, implements Observer$)$

Attributes:

private JButton$[][]$ buttons

private JLabel winLabel

private JLabel currentTurnLabel

private JButton resetGameButton

Methods:

public View$()$

public void update$($Observable o$,$ Object arg$)$

public void assignButtonListener$($int x$,$ int y$,$ ActionListener l$)$

public void assignResetButtonListener$($ActionListener l$)$

$6.$ Controller Class

Attributes:

private Model model

private View view

Methods:

public Controller$($Model m$,$ View v$)$

public void makeMove$($int x$,$ int y$)$

public void resetGame$()$

$7.$ ButtonClickListener Class $($implements ActionListener$)$

Attributes:

private int x

private int y

private Controller controller

Methods:

public ButtonClickListener$($int x$,$ int y$,$ Controller c$)$

public void actionPerformed$($ActionEvent e$)$

$8.$ ResetGameListener Class $($implements ActionListener$)$

Attributes:

private Controller controller

Methods:

public ResetGameListener$($Controller controller$)$

public void actionPerformed$($ActionEvent e$)$

$9.$ TicTacToeDemo Class

Methods:

public static void main$($String$[]$ args$)$

Relationships

Model:

Implements Observable

View:

Extends JFrame

Implements Observer

Observes Model

Controller:

Aggregates Model and View

Uses ButtonClickListener and ResetGameListener

ButtonClickListener:

Implements ActionListener

Aggregates Controller

ResetGameListener:

Implements ActionListener

Aggregates Controller

TicTacToeDemo:

Instantiates Model, View, and Controller

Adds View as an observer to Model