试图在java中向下传播Object to File

import java.io.Serializable;

public class MyClass implements Serializable {
    // 类的成员和方法
}

import java.io.FileOutputStream;
import java.io.ObjectOutputStream;

public class Main {
    public static void main(String[] args) {
        MyClass obj = new MyClass();
        
        try {
            FileOutputStream fileOut = new FileOutputStream("path/to/file.ser");
            ObjectOutputStream out = new ObjectOutputStream(fileOut);
            out.writeObject(obj);
            out.close();
            fileOut.close();
            System.out.println("对象已成功序列化到文件。");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

import java.io.FileInputStream;
import java.io.ObjectInputStream;

public class Main {
    public static void main(String[] args) {
        MyClass obj = null;
        
        try {
            FileInputStream fileIn = new FileInputStream("path/to/file.ser");
            ObjectInputStream in = new ObjectInputStream(fileIn);
            obj = (MyClass) in.readObject();
            in.close();
            fileIn.close();
            System.out.println("对象已成功从文件反序列化。");
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        // 对反序列化后的对象进行操作
        if (obj != null) {
            // ...
        }
    }
}