In this tutorial, we will show you how to use Jackson 2.x to convert Java object to / from JSON. 1. Quick Reference.JSON from String to Object Staff obj mapper.readValue(jsonInString, Staff.class) Gson can work with arbitrary Java objects including pre-existing objects that you do not have source- code of. It can also be used to convert a JSON string to an equivalent Java object /. public class GSONExample . The following example shows how to convert Java object into JSON string using Jackson. Jackson provide ObjectMapper class provides functionality to read and write JSON data. The writeValueAsString(Object) method to serialize any Java object into string. GSON is a good option to convert java object to json object and vise versa.Gson gson new Gson() final User user gson.fromJson(jsonString, User.class) Where jsonString is the above JSON String. Google GSON Library. Converting Java Object to JSON using GSON.The GSON package contains many classes like GsonBuilder and GSON. Using these classes we can read and write JSON from String, File, Streams, URLs, etc. Gson gson new Gson() String jsonString gson.toJson(employee) Convert Json to Java ObjectAuthor JavaSampleApproachPosted on December 8, 2016June 4, 2017Categories Java Advanced, JsonTags Gson, Json.
Related Posts. Its a Java library developed by Google that is used to convert JSON to Java objects and vice versa. You can read more about Gson here. I came across this json string which I had to convert into a Map. Gson gson new Gson() String jsonRepresentation gson.toJson(student)3. Convert a Json representation to a Java object. package com.