Chapter 14 Exercise 2, Introduction to Java Programming, Tenth Edition Y. Daniel LiangY.

14.2 (Tic-tac-toe board)
Write a program that displays a tic-tac-toe board,
as shown in Figure 14.43b. A cell may be X, O, or empty.
What to display at each cell is randomly decided.
The X and O are images in the files x.gif and o.gif.

import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;

public class Exercise_02 extends Application {

    @Override
    public void start(Stage primaryStage) {

        GridPane pane = new GridPane();
        pane.setAlignment(Pos.CENTER);
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 3; j++) {
                int random = (int)(Math.random() * 3);
                if (random != 2) {
                    String image = (random > 0) ? "/image/x.gif" : "/image/o.gif";
                    pane.add(new ImageView(new Image(image)), j, i);
                }
            }
        }
        Scene scene = new Scene(pane, 150, 150);
        primaryStage.setTitle("Tic Tac Toe");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static void main(String[] args) {

        Application.launch(args);

    }

}