Thread: Serializing and deserializing enum with time field

Hello !

I don’t understand why I'am getting 'null' when I'm doing deserealization here:

Here is my enum:
---
package enums.serialize;

import java.time.LocalDateTime;

public enum Data
{
INSTANCE;

private LocalDateTime now;


public void setTime()
{
now = LocalDateTime.now();
}

public void printSavedTime()
{
System.out.println(now);
}
}
---

And here is main program:
---
package enums.serialize;

import java.io.*;

public class Main
{
public static void main(String[] args) throws IOException, ClassNotFoundException
{
//Data.INSTANCE.setTime();
//saveData();
getSavedData();
}

public static void saveData() throws IOException
{
try(ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("./now.ser")))
{
oos.writeObject(Data.INSTANCE);
oos.flush();
}
}

public static void getSavedData() throws IOException, ClassNotFoundException
{
System.out.println(new File("./now.ser").exists());

try(ObjectInputStream ois = new ObjectInputStream(new FileInputStream("./now.ser")))
{
((Data) ois.readObject()).printSavedTime();
}
}
}
---

The output is:
true
null