RESTful Java Web Services - Third Edition

Generating the object model from the JSON representation

Gson offers simpler APIs to convert the JSON representation into Java objects. To do this, you can call the fromJson(Reader json, Class<T> classOfT) method on the com.google.gson.Gson object. The following example will help you understand the end-to-end use of Gson APIs for deserializing the JSON content to Java objects:

1. The first step is to create a Gson instance. The Gson class offers all the necessary methods for serializing and deserializing JSON data. You can simply create an instance by calling new Gson(). However, in this example, we use com.google.gson.GsonBuilder to create a Gson instance. This is because GsonBuilder lets you override the default configuration for a Gson