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Following code

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Lab4.java

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package application;

import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.stage.Stage; import javafx.scene.Parent; import javafx.scene.Scene;

/** * Memory Game * This application is a basic memory game. The user is shown a 2x4 grid of gray squares. * A square is "revealed" when the user clicks on it - the color of the square is then shown. * Squares are gray when "hidden", and can be red, green, blue, or yellow when shown. * * The user begins by revealing 2 squares. If both squares are the same color, the squares * remain shown, otherwise the squares are hidden again (and turn gray). * * The game ends when the user has matched all of the squares (all colors are shown). */ public class Lab4 extends Application { @Override public void start(Stage primaryStage) { try { // Load the FXML file for the game board Parent root = FXMLLoader.load(getClass().getResource("/board.fxml")); // Set the scene onto the stage primaryStage.setScene(new Scene(root, 800, 400)); // Display the board to the user primaryStage.show(); } catch(Exception e) { e.printStackTrace(); } } public static void main(String[] args) { // Launches the application (calls start method in the process) launch(args); } }

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MainController.java

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package application.controller;

import application.model.Board; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.fxml.FXML; import javafx.scene.control.Button;

public class MainController implements EventHandler{

@FXML Button zero0, zero1, zero2, zero3, one0, one1, one2, one3; private Board gameBoard = new Board();

@Override public void handle(ActionEvent event) { Button selected = (Button) event.getSource(); System.out.println("User selected square: " + selected.toString()); String color = gameBoard.reveal(selected.getId()); if( color!=null ) selected.setStyle("-fx-background-color: #" + color ); System.out.println( gameBoard ); } }

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Board.java

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package application.model;

import javafx.scene.paint.Color;

public class Board { private Square[][] squares; public Board() { this.squares = new Square[2][4]; squares[0][0] = new Square(Color.RED); squares[0][1] = new Square(Color.BLUE); squares[0][2] = new Square(Color.GREEN); squares[0][3] = new Square(Color.YELLOW); squares[1][0] = new Square(Color.GREEN); squares[1][1] = new Square(Color.RED); squares[1][2] = new Square(Color.YELLOW); squares[1][3] = new Square(Color.BLUE); } public void hide( int x, int y ) { // TODO: Hide the given square // Hint: call the corresponding method in the Square class to help you hide it. } public void hideBoth() { // TODO: Hide both squares - the user's 1st & 2nd choices this round // Hint: this should be called if no match is found // Hint 2: this method should call a hide method twice, one for each square. } public boolean matchFound() { // TODO: Check to see if a match is found, and return true if so return false; } public String reveal( String buttonName ) { int x = buttonName.startsWith("zero") ? 0 : 1; int y; if( buttonName.endsWith("zero") ) y = 0; else if( buttonName.endsWith("one") ) y = 1; else if( buttonName.endsWith("two") ) y = 2; else y = 3; return this.reveal(x,y); } public String reveal( int x, int y ) { squares[x][y].reveal(); return squares[x][y].getColorAsCode(); } /** * ToString method returns a String representation of the current state of the game board. * * @return String Board colors currently revealed. */ public String toString() { String ret = squares[0][0] + ", " + squares[0][1] + ", "; ret += squares[0][2] + ", " + squares[0][3] + " "; ret += squares[1][0] + ", " + squares[1][1] + ", "; ret += squares[1][2] + ", " + squares[1][3]; return ret; } }

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Square.java

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package application.model;

import javafx.scene.paint.Color;

public class Square {

private boolean isDisplayed; private Color color; private static final String BLUE = "0000FF"; private static final String GREEN = "00FF00"; private static final String RED = "FF0000"; private static final String YELLOW = "FFFF00"; public Square( Color c ) { this.color = c; this.isDisplayed = false; } public Color getDisplayedColor() { if( this.isDisplayed() ) return this.getColor(); else return Color.GRAY; } public Color getColor() { return this.color; } public boolean isDisplayed() { return isDisplayed; } public void hide() { this.isDisplayed = false; } public void reveal() { this.isDisplayed = true; } public String getColorAsCode() { if( !isDisplayed() ) return Color.GRAY.toString(); if( color.equals(Color.RED) ) return RED; else if( color.equals(Color.GREEN) ) return GREEN; else if( color.equals(Color.BLUE) ) return BLUE; else return YELLOW; } public String getColorAsString() { if( !isDisplayed() ) return "GRAY"; if( color.equals(Color.YELLOW) ) return "YELLOW"; else if( color.equals(Color.GREEN) ) return "GREEN"; else if( color.equals(Color.BLUE) ) return "BLUE"; else if( color.equals(Color.RED) ) return "RED"; else return "GRAY"; } public String toString() { return this.getColorAsString(); } }

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board.fxml

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Getting Started To begin this lab, download the Eclipse project file here: abc 123-lab4.zip This JavaFX project consists of the following, and follows the MVC design pattern: Lab4.java - runs the application .MainController.java controller .Board.java - model (represents the game board) Square-Java-model (represents a square on the board) board.fxml - view Begin by downloading the code and becoming familiar with each of these classes. If you run the code as given, the following application will be presented Getting Started To begin this lab, download the Eclipse project file here: abc 123-lab4.zip This JavaFX project consists of the following, and follows the MVC design pattern: Lab4.java - runs the application .MainController.java controller .Board.java - model (represents the game board) Square-Java-model (represents a square on the board) board.fxml - view Begin by downloading the code and becoming familiar with each of these classes. If you run the code as given, the following application will be presented