I have a problem with my code in java, replit. When I run my code in the console, the output for the csv file is always the random ID number, null, 0,0,0. I don't want null, 0,0,0. null,0,0,0 reflects name, totalgames, totalguesses, and bestgame. When I run my program it doesn't give the actual value of totalgames, totalguesses, and bestgame just 0,0,0 every time. Could you fix this? Also name is null because I haven't asked for the player's name, so I would like you to include that as well in this code.    Here is the code, each class in seperate files in replit:   import java.util.Scanner; import java.util.Random; public class Main {     public static void main(String[] args) {         Scanner console = new Scanner(System.in);         Random random = new Random();         Game game = new Game(console, random);         game.startGame();         console.close();     } }                   import java.util.Scanner; import java.util.UUID; public class Player {   private UUID id;   private String name;   private int totalGames;   private int totalGuesses;   private int bestGame;   public Player() {       this.id = UUID.randomUUID();   }   public UUID getId() {       return id;   }   public String getName() {       return name;   }   public void setName(String name) {       this.name = name;   }   public int getTotalGames() {       return totalGames;   }   public void setTotalGames(int totalGames) {       this.totalGames = totalGames;   }   public int getTotalGuesses() {       return totalGuesses;   }   public void setTotalGuesses(int totalGuesses) {       this.totalGuesses = totalGuesses;   }   public int getBestGame() {       return bestGame;   }   public void setBestGame(int bestGame) {       this.bestGame = bestGame;   }        public int playGame(Scanner console, int answer) {         System.out.println("I'm thinking of a number between 1 and " + Game.MAX + "...");         int guesses = 0;         while (true) {             System.out.print("Your guess? ");             if (console.hasNextInt()) {                 int guess = console.nextInt();                 guesses++;                 if (guess == answer) {                     System.out.println("You got it right in " + guesses + " guess" + (guesses == 1 ? "!" : "es!"));                     break;                 } else if (guess < answer) {                     System.out.println("It's higher.");                 } else {                     System.out.println("It's lower.");                 }             } else {                 System.out.println("Invalid input. Please enter a valid integer.");                 console.next(); // consume invalid input             }         }         return guesses;     } }                                   import java.io.*; import java.util.Scanner; import java.util.Random; public class Game {     public static final int MAX = 100;     private final Scanner console;     private final Random random;     private static final String CSV_FILE_PATH = "player_results.csv";     public Game(Scanner console, Random random) {         this.console = console;         this.random = random;     }     public void startGame() {         int totalGames = 0;         int totalGuesses = 0;         int bestGame = Integer.MAX_VALUE;         while (true) {             Player player = new Player();             int answer = 1 + random.nextInt(MAX);             int guesses = player.playGame(console, answer);             totalGames++;             totalGuesses += guesses;             bestGame = Math.min(bestGame, guesses);             // Save player information to CSV             savePlayerToCSV(player);             System.out.println("Play again y/n?");             String playAgain = console.next().toLowerCase();             if (!playAgain.startsWith("y")) {                 break;             }         }         printOverallStatistics(totalGames, totalGuesses, bestGame);     }     private void printOverallStatistics(int totalGames, int totalGuesses, int bestGame) {         System.out.println("Total games: " + totalGames);         System.out.println("Total guesses: " + totalGuesses);         System.out.println("Guesses/game: " + (totalGames == 0 ? 0 : totalGuesses / totalGames));         System.out.println("Best game: " + bestGame);     }     private void savePlayerToCSV(Player player) {         try (FileWriter writer = new FileWriter(CSV_FILE_PATH, true);              BufferedWriter bw = new BufferedWriter(writer);              PrintWriter out = new PrintWriter(bw)) {             out.println(player.getId() + "," +                         player.getName() + "," +                         player.getTotalGames() + "," +                         player.getTotalGuesses() + "," +                         player.getBestGame());         } catch (IOException e) {             e.printStackTrace();         }     }     public static void main(String[] args) {         Scanner console = new Scanner(System.in);         Random random = new Random();         Game game = new Game(console, random);         game.startGame();         console.close();     } }