import javax.swing.$*$;

import java.awt.$*$;

import java.awt.event.$*$;

import java.io$.$BufferedReader;

import java.io$.$FileReader;

import java.io$.$IOException;

import java.util.ArrayList;

import java.util.Random;

class EarnDiamondGame $\{$

private static final int EASY $=1$;

private static final int MODERATE $=2$;

private static final int DIFFICULT $=3$;

private JFrame frame;

private JPanel panel;

private JTextArea questionArea;

private ButtonGroup optionsGroup;

private JRadioButton$[]$ options;

private JButton askQuestionButton, playGameButton;

private JLabel scoreLabel;

private int score $=0$;

private ArrayList questions;

EarnDiamondGame$()\{$

frame $=$ new JFrame$("$Earn Diamond Game"$)$;

panel $=$ new JPanel$()$;

questionArea $=$ new JTextArea$(5,30)$;

optionsGroup $=$ new ButtonGroup$()$;

options $=$ new JRadioButton$[4]$;

for $($int i $=0$; i $<4$; i$++)\{$

options$[$i$]=$ new JRadioButton$()$;

optionsGroup.add$($options$[$i$])$;

$\}$

askQuestionButton $=$ new JButton$("$Ask & Answer"$)$;

playGameButton $=$ new JButton$("$Play Game"$)$;

scoreLabel $=$ new JLabel$("$Score: $"+$ score$)$;

panel.setLayout$($new GridLayout$(0,1))$;

panel.add$($questionArea$)$;

for $($int i $=0$; i $<4$; i$++)\{$

panel.add$($options$[$i$])$;

$\}$

panel.add$($askQuestionButton$)$;

panel.add$($playGameButton$)$;

panel.add$($scoreLabel$)$;

loadQuestions$()$;

askQuestionButton.addActionListener$($new ActionListener$()\{$

public void actionPerformed$($ActionEvent e$)\{$

askQuestion$()$;

$\}$

$\})$;

playGameButton.addActionListener$($new ActionListener$()\{$

public void actionPerformed$($ActionEvent e$)\{$

playGame$()$;

$\}$

$\})$;

frame.add$($panel$)$;

frame.setDefaultCloseOperation$($JFrame$.$EXIT$\_$ON$\_$CLOSE$)$;

frame.pack$()$;

frame.setVisible$($true$)$;

$\}$

private void loadQuestions$()\{$

questions $=$ new ArrayList$<>()$;

String csvFile $=$ "questions.csv$"$;

String line;

try $($BufferedReader br $=$ new BufferedReader$($new FileReader$($csvFile$)))\{$

while $(($line $=$ br$.$readLine$())!=$ null$)\{$

String$[]$ data $=$ line.split$(",")$;

questions.add$($data$)$;

$\}$

$\}$ catch $($IOException e$)\{$

e$.$printStackTrace$()$;

$\}$

$\}$

private void askQuestion$()\{$

Random rand $=$ new Random$()$;

int category $=$ getCategory$()$;

ArrayList filteredQuestions $=$ new ArrayList$<>()$;

for $($String$[]$ q : questions$)\{$

if $($Integer$.$parseInt$($q$[1])==$ category$)\{$

filteredQuestions.add$($q$)$;

$\}$

$\}$

if $(!$filteredQuestions.isEmpty$())\{$

int randomIndex $=$ rand.nextInt$($filteredQuestions$.$size$())$;

String$[]$ selectedQuestion $=$ filteredQuestions.get$($randomIndex$)$;

questionArea.setText$($selectedQuestion$[2])$;

for $($int i $=0$; i $<4$; i$++)\{$

options$[$i$].$setText$($selectedQuestion$[$i $+3])$;

$\}$

int selectedOption $=-1$;

for $($int i $=0$; i $<4$; i$++)\{$

if $($options$[$i$].$isSelected$())\{$

selectedOption $=$ i;

break;

$\}$

$\}$

if $($selectedOption $!=-1$ && options$[$selectedOption$].$getText$().$equals$($selectedQuestion$[7]))\{$

if $($category $==$ EASY$)\{$

score $+=10$;

$\}$ else if $($category $==$ MODERATE$)\{$

score $+=30$;

$\}$ else $\{$

score $+=50$;

$\}$

scoreLabel.setText$("$Score: $"+$ score$)$;

$\}$

$\}$ else $\{$

JOptionPane.showMessageDialog$($frame$,"$No questions available for selected category."$)$;

$\}$

$\}$

private void playGame$()\{$

int totalTime $=$ score $*3$;

$//$ Simulated game logic for the matrix and diamond interaction

JOptionPane.showMessageDialog$($frame$,$ "You have $"+$ totalTime $+"$ seconds for the game."$)$;

$//$ Simulate game completion after the determined time

simulateGameCompletion$($totalTime$)$;

$\}$

private void simulateGameCompletion$($int totalTime$)\{$

$//$ Simulate game completion after the specified time

try $\{$

Thread.sleep$($totalTime $*1000$L$)$;

$\}$ catch $($InterruptedException e$)\{$

e$.$printStackTrace$()$;

$\}$

JOptionPane.showMessageDialog$($frame$,$ "Game Over! Your time is up$.")$;

$\}$

private int getCategory$()\{$

int category $=-1$;

$//$ Add logic to retrieve selected category $($e$.$g$.,$ from a GUI element$)$

$//$ For demonstration purposes, return a random category between $1$ to $3$

Random ran