CarResource.java

package com.moondeuk;

import javax.inject.Inject;
import javax.json.Json;
import javax.json.JsonArray;
import javax.json.JsonArrayBuilder;
import javax.validation.Valid;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.core.MediaType;

@Path("cars")
@Consumes(MediaType.APPLICATION_JSON)
public class CarResource {

    @Inject
    CarService carService;

    @GET
    public JsonArray getCars() {
        return carService.getCars().stream().map( c ->
                Json.createObjectBuilder()
                        .add("pono", c.getPono())
                        .add("color", c.getColor())
                        .add("type", c.getType())
                        .add("year", c.getYear()).build())
                .collect(Json::createArrayBuilder, JsonArrayBuilder::add, JsonArrayBuilder::add).build();
    }

    @POST
    public void createCar(@Valid Car car){
        carService.createCar(car);
    }
}