1 import com.fasterxml.jackson.annotation.JsonAutoDetect; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; import java.io.File; import java.io.IOException; import java.util.List; import java.util.Map; public class App { public static void main(String[] args) throws IOException { String fileName = "test.json"; ObjectMapper mapper = new ObjectMapper(); List<Person> myPeople = mapper.readValue(new File(fileName), new TypeReference<>(){}); for(Person myPerson : myPeople) { System.out.println(myPerson.toString()); // => Person{name='Ivan', age=20, contacts={mail=1@mail.ru, tel=25-12-86}} // => Person{name='Petr', age=25, contacts={mail=2@mail.ru, tel=35-32-16}} } } @JsonAutoDetect(fieldVisibility = JsonAutoDetect.Visibility.ANY) static class Person { String name; int age; Map<String, String> contacts; public Person(){} public Person(String name, int age, Map<String, String> contacts) { this.name = name; this.age = age; this.contacts = contacts; } @Override public String toString() { return "Person{" + "name='" + name + '\'' + ", age=" + age + ", contacts=" + contacts + '}'; } } }