How to save a complex object in java?

Question

Java

There is a class that contains a list of other objects, which can also contain an object. What is the easiest way to store such a class in a file?

Answer 1

Good evening.
You can solve your problem in different ways.
For example serialize your object/s to json/xml/yaml. As noted by colleague Dmitry Roo , see either jackson, gson. If we are talking about android, then there are others too.
Well, or for example, you can use protobuf
https://developers.google.com/protocol-buffers
Useful links:
https://www.baeldung.com/java-serialization-approaches
https://www.baeldung.com/java -serialization

Answer 2

Any serializer will do the job, as long as the objects are serializable.

Answer 3

I would save as json (see gson, jackson)

Answer 4

serialization.
only the following conditions must be met.
The data must be self-sufficient,
some resources must be restored during deserialization. (e.g. database connection)