In case you have JSON or JSON-Schema (simple or complex) that you want to map into a POJO without hustling too much to write a complete POJO class, then you can use the jsonschema2pojo UI or library. It is an awesome library that lets you create Java classes using your input JSON. Plus, it supports many Annotation styles such as Jackson, Gson, etc. Using UI: http://www.jsonschema2pojo.org Or https://github.com/csanuragjain/extra/tree/master/convertJson2Pojo (Git Repo by Anurag Jain) P.S. There are many other ways to achieve this and this is just one of them.
A blog about my testing stories where I pen down my thoughts about test automation covering primarily Selenium, Java, Rest Assured, Karate, Maven, TestNG, Postman, newman, Jenkins, Git, Azure DevOps, etc.