Solution: Game State Saver

import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;
public class GameSaver {
    // Mark the class as Serializable
    public static class Player implements Serializable {
        private String name;
        private int level;
        private double health;
        public Player(String name, int level, double health) {
            this.name = name;
            this.level = level;
            this.health = health;
        }
        @Override
        public String toString() {
            return "Player[name=" + name + ", level=" + level + ", health=" + health + "]";
        }
    }
    public static void saveGame(Player player, String fileName) {
        Path path = Path.of(fileName);
        // Use try-with-resources for automatic cleanup
        try (ObjectOutputStream out = new ObjectOutputStream(Files.newOutputStream(path))) {
            out.writeObject(player);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public static Player loadGame(String fileName) {
        Path path = Path.of(fileName);
        // Use try-with-resources to read the object back
        try (ObjectInputStream in = new ObjectInputStream(Files.newInputStream(path))) {
            return (Player) in.readObject();
        } catch (IOException | ClassNotFoundException e) {
            e.printStackTrace();
            return null;
        }
    }
    public static void main(String[] args) {
        String saveFile = "savegame.dat";
        Player originalPlayer = new Player("Hero", 5, 100.0);
        System.out.println("Saving: " + originalPlayer);
        saveGame(originalPlayer, saveFile);
        System.out.println("Loading...");
        Player loadedPlayer = loadGame(saveFile);
        if (loadedPlayer != null) {
            System.out.println("Loaded: " + loadedPlayer);
            System.out.println("Success: " + originalPlayer.toString().equals(loadedPlayer.toString()));
        } else {
            System.out.println("Failed to load game.");
        }
    }
}