How to separate JSON object on pieces?

I am using Jackson and I have the following JSON structure.

{
  "person": {
    "person1": {"name": "daniel", "age": "17"},
    "person2": {"name": "lucy", "age": "19"}
  }
}

And I want to get the following result or separate them.
Json1:

{
  "person1": {"name": "daniel", "age": "17"},
}

Json2

{
  "person2": {"name": "lucy", "age": "19"}
}

How to do that?

You can read the whole JSON payload as JsonNode and iterate over all fields and create new JSON Object-s. See below example:

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.File;
import java.io.IOException;

public class JsonNodeApp {

    public static void main(String[] args) throws IOException {
        File jsonFile = new File("./resource/test.json").getAbsoluteFile();

        ObjectMapper mapper = new ObjectMapper();

        JsonNode person = mapper.readTree(jsonFile).get("person");
        person.fields().forEachRemaining(entry -> {
            JsonNode newNode = mapper.createObjectNode().set(entry.getKey(), entry.getValue());
            System.out.println(newNode);
        });
    }
}

Above code prints:

{"person1":{"name":"daniel","age":"17"}}
{"person2":{"name":"lucy","age":"19"}}