What is JSON-RPC? List some Features of JSON-RPC-Java

JSON-RPC is a call protocol that uses JSON for encoding messages. It is a simple and easy protocol just like XML-RPC. It supports multiple calling and notifications. In short, JSON-RPC is the method of sending a request to someone and receiving the response from another side. It is a single way by which different components can communicate easily with each other. If the authentication for your HTTP library is required then you can use the specific JSON-RPC protocol. There are a total of three versions of this JSON-RPC version 2.0, version 1.1 (working draft) and version 1.0.