java序列化底层

PO类person：

package _20210530;



import java.io.Serializable;

public class Person implements Serializable {
    private static final long serialVersionUID = 1L;

    public String name;
    public Integer age;

    public Person(String name, Integer age) {
        this.name = name;
        this.age = age;
    }

    @Override
    public String toString() {
        return super.toString();
    }
}

MAIN:

package _20210530;



import java.io.*;

public class Main {
    public static void main(String[] args) {
        Person person = new Person("小明", 13);

        ObjectOutputStream objectOutputStream = null;
        
        try {
            objectOutputStream = new ObjectOutputStream
                    (new FileOutputStream("D:\idea new world\src\_20210530\person.txt"));
            objectOutputStream.writeObject(person);

        } catch (Exception e) {
            e.printStackTrace();
        }finally {
            try {
                objectOutputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }


        
        ObjectInputStream objectInputStream = null;
        try {
            objectInputStream = new ObjectInputStream
                    (new FileInputStream("D:\idea new world\src\_20210530\person.txt"));
            Person person1 = (Person)objectInputStream.readObject();

            System.out.println(person1.name);
            System.out.println(person1.age);

        } catch (Exception e) {
            e.printStackTrace();
        }finally {
            try {
                objectInputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }


}