Jackson (library)

package org.wikipedia.examples;

import java.io.IOException;

import com.fasterxml.jackson.databind.ObjectMapper;

record Person(int id, String firstName, String lastName) {}

public class ReadWriteJackson {
    public static void main(String[] args) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
   
        String jsonInput = "{\"id\":0,\"firstName\":\"Robin\",\"lastName\":\"Wilson\"}";
        Person q = mapper.readValue(jsonInput, Person.class);
        System.out.printf("Read and parsed Person from JSON: %s%n", q);
   
        Person p = new Person(1, "Roger", "Rabbit");
        System.out.printf("Person object %s as JSON =%n", p);
        mapper.writeValue(System.out, p);
    }
}