FAQ: Serialization: Lesson - Custom Serialization

This community-built FAQ covers the “Custom Serialization” exercise from the lesson “Serialization: Lesson”.

Paths and Courses
This exercise can be found in the following Codecademy content:

[BETA] Learn Intermediate Java

FAQs on the exercise Custom Serialization

There are currently no frequently asked questions associated with this exercise – that’s where you come in! You can contribute to this section by offering your own questions, answers, or clarifications on this exercise. Ask or answer a question by clicking reply (reply) below.

If you’ve had an “aha” moment about the concepts, formatting, syntax, or anything else with this exercise, consider sharing those insights! Teaching others and answering their questions is one of the best ways to learn and stay sharp.

Join the Discussion. Help a fellow learner on their journey.

Ask or answer a question about this exercise by clicking reply (reply) below!
You can also find further discussion and get answers to your questions over in #get-help.

Agree with a comment or answer? Like (like) to up-vote the contribution!

Need broader help or resources? Head to #get-help and #community:tips-and-resources. If you are wanting feedback or inspiration for a project, check out #project.

Looking for motivation to keep learning? Join our wider discussions in #community

Learn more about how to use this guide.

Found a bug? Report it online, or post in #community:Codecademy-Bug-Reporting

Have a question about your account or billing? Reach out to our customer support team!

None of the above? Find out where to ask other questions here!

How could they use getters without creating them first? As in

private void writeObject(java.io.ObjectOutputStream stream) throws IOException{
    stream.writeObject(this.name);
    stream.writeInt(this.dateOfBirth.getMonth());
    stream.writeInt(this.dateOfBirth.getDay());
    stream.writeInt(this.dateOfBirth.getYear());
  }

In Learn Java, they first created getters as type methods like this

public String getName() {
    return name;
  }

Also, what good reason may be there to go to the trouble of creating all those writeObject/read.Object methods instead of just adding the words implements Serializable after public class DateOfBirth? I wish it was properly explained (and why I may need all that serialization at all too)

UPD: It turns out, if you click that little folder icon, you can see other classes too, including the Engine class with the getters! I wish someone told me that at some point earlier

Why does it insist on using this. keywords? As was explained in Learn Java, I need it only if local variables have the same name as instance variables