What is Serialization?

Turning live objects in memory into a format that can be stored or sent — and back again

→

Obj

Object

Live in RAM
with references

Ser

Serialize

Convert to bytes
or text (JSON)

Store

Store / Send

File, DB, or
network

Des

Deserialize

Rebuild the
live object

Click “Start Auto” or use “Next” to learn what serialization means

Serialization is the foundation of saving data to a file, sending it over HTTP, and loading it again.
In PersonCarDog we serialize the whole Repository to JSON; in Spring Boot the same idea appears in REST APIs and JPA.