It's full of gratitude and respect.
[Java] How to handle JSON data with standard API, Jackson, JSON in Java https://www.sejuku.net/blog/39599
Read data with the JSON library Jackson for Java https://blog.kymmt.com/entry/jackson
Sample to convert JSON and Java objects in Java Jackson https://itsakura.com/java-jackson
Let's face URLConnection (HttpURLConnection) ~ Get data with GET method ~ http://blog.officekoma.co.jp/2016/07/urlconnectionhttpurlconnectionget.html
[Java] I tried to implement Yahoo API product search https://qiita.com/tosuu/items/b440ad3f3cbf7c4b8396