TicTacToeApplication.java

package ticTacToe;

import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.GridPane;
import javafx.scene.control.Button;
import javafx.scene.control.Label;



public class TicTacToeApplication extends Application{


    private GameLogic game;

    @Override
    public void init() throws Exception{
        //create the game logic used by the app
        this.game = new GameLogic();
    }

    @Override
    public void start(Stage stage){

        Label gameInfo = new Label("Turn: X");
        GridPane grid = new GridPane();
        BorderPane layout = new BorderPane();
        Button[][] buttons = new Button[3][3];

        for(int row = 0; row < 3; row++){
            for(int col = 0; col < 3; col++){
                Button btn = new Button("");
                buttons[row][col] = btn;
                grid.add(btn, col, row);

                final int r = row;
                final int c = col;

                btn.setOnAction((event)->{
                    if(game.makeMove(r, c)){
                        btn.setText(game.getTurn().name());
                        if(game.getState().name().equals("PLAYING")){
                            game.changeTurn();
                            gameInfo.setText(game.getTurn().name());
                        }else{
                            gameInfo.setText(game.getState().name());
                        }
                    }
                });
            }
        }

        layout.setTop(gameInfo);
        layout.setCenter(grid);

        Scene view = new Scene(layout);

        stage.setScene(view);
        stage.show();
    }

    public static void main(String[] args) {
        launch(TicTacToeApplication.class);
    }

}