In Java serialization, a static member variable "can be obtained" is because the class loader has loaded the class before it gets the loaded data __java

In Java serialization, two member variables cannot be serialized. One is static and one is transient.

But when I wrote a demo, I found that "static member variables can actually get".

The demo code is as follows

Package Com.java;

Import java.io.*;
 /** * Created by Huluo on 2016/8/15.
        */public class Hello {public static void main (string[] args) throws IOException, ClassNotFoundException {

        User user = new user ();

        FileOutputStream FileOutputStream = new FileOutputStream ("Helloworld.txt");

        ObjectOutputStream ObjectOutputStream = new ObjectOutputStream (FileOutputStream);



        Objectoutputstream.writeobject (user);

        FileInputStream FileInputStream = new FileInputStream ("Helloworld.txt");

        ObjectInputStream ObjectInputStream = new ObjectInputStream (FileInputStream);

        User User1 = (user) objectinputstream.readobject ();

    System.out.println (user1);

    } class User implements Serializable {String name;

    static String password;

    transient int age;

        Public User () {this.name = "John";

        This.password = "password";
    This.age = 23;
@Override public String toString ()    {return name + ' +++++ ' + password + ' +++++ ' + age;

    private void WriteObject (ObjectOutputStream out) throws IOException {Out.defaultwriteobject ();
 }

}

The idea that static member variables can not be serialized is correct,

The illusion of being able to get a static serialization is because the static belongs to the class and gets the value of the static variable of the class that the JVM has loaded.

When you restart a process or deserialize on another machine, you don't get a static value.

Comment out the following section of my code and rerun it to be validated.

        User user = new user ();
//        FileOutputStream FileOutputStream = new FileOutputStream ("Helloworld.txt");
//        ObjectOutputStream ObjectOutputStream = new ObjectOutputStream (fileoutputstream);
//        objectoutputstream.writeobject (user);