Lombok example

package vertigo;

import java.time.Instant;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.fasterxml.jackson.module.paramnames.ParameterNamesModule;
import lombok.Builder;
import lombok.SneakyThrows;
import lombok.Value;
import lombok.val;

@Value
@Builder
public class ValueExample {
    String name;
    int age;
    Instant now;
}

class Test {

    @SneakyThrows
    public static void main(String[] args) {
        val om = new ObjectMapper();
        om.registerModule(new ParameterNamesModule());
        om.registerModule(new JavaTimeModule());
        val v = ValueExample.builder()
            .name("Nick")
            .age(33)
            .now(Instant.now())
            .build();
        val jsonV = om.writeValueAsString(v);
        val v1 = om.readValue(jsonV, ValueExample.class);
        System.out.println("v = " + v);
        System.out.println("json = " + jsonV);
        System.out.println("v1 = " + v1);
    }
}