In Java, a HashMap is a widely used data structure that we can use to store data in key-value pairs. JavaScript Object Notation is a popular data interchange format commonly used to transmit data between a server and a web application.
Table of contents
1. Introduction2. A Map Example and the Expected JSON Output3. Java Map to JSON using Jackson4. Java Map to JSON using Gson5. Java Map to JSON using JSON-Java6. ConclusionSort: