https://habrahabr.ru/post/326986/
GitHub GraphQL API (https://developer.github.com/v4/explorer/)
http://devcolibri.com/3732
http://crunchify.com/how-to-build-restful-service-with-java-using-jax-rs-and-jersey/
https://www.nabisoft.com/tutorials/java-ee/producing-and-consuming-json-or-xml-in-java-rest-services-with-jersey-and-jackson
https://examples.javacodegeeks.com/enterprise-java/rest/jersey/json-example-with-jersey-jackson/
https://jersey.java.net/documentation/latest/index.html
Android Restful Webservice Tutorial – Introduction to RESTful webservice – Part 1
https://habrahabr.ru/post/150034/
https://habrahabr.ru/post/46374/
http://www.dokwork.ru/2014/08/restful.html
https://habrahabr.ru/post/115718/
https://habrahabr.ru/post/150176/