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Thread: Serializing and deserializing enum with time field

  1. #1
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    Default Serializing and deserializing enum with time field

    Hello !

    I donít 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

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Serializing and deserializing enum with time field

    Please edit your post and add code tags to preserve the code's formatting. The posted code does not have any indentations.
    If you don't understand my answer, don't ignore it, ask a question.

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