Gson in java How to convert JSON array to List using com. GSONでJavaオブジェクトからJSONを構築するには大雑把に言うと以下の2通りがある。 gson. JsonElement object; As a java. The first approach we'll see for converting a JSON String to a JsonObject is a two-step process that uses the JsonParser class. OK, I Understand. To get hold of JSON Basics concepts, please refer to JSON basics. Example 1 : For simple object. In the example above the JSON source is a string. For this purpose we have created the Person class which will store all the previous information (for the sample we are only stoting the person id and name): public class Person {private int id; private String name; // Getter/Setter methods. After this we setup our variables and then try to parse the jsonData into a JSONObject, which is just a java object representation of the JSON data. By Websparrow | March 31, 2017 | Updated: July 20, 2019 In this Java tutorial, we are going to parse or read the nested JSON object using the library JSON. Learn to apply infinite scrolling using themoviedb. json")); // 2. Get started. See part 6 of this series for a complete listing of and links to the various sections of this Gson user guide review. 負荷分散などでWebサーバが複数台あるシステムがあります。で、トラブル発生→ログ収集だ。となった時、いちいちファイルログファイルをコピーするのは非常に面倒です。. Basically – this same tutorial will help you if you want to convert gson fromjson to map, gson fromjson to list, json fromjson to array, json string to arraylist in java. The name must be a String, but the value can be an arbitrary JsonElement, thereby allowing you to build a full tree of JsonElements rooted at this node. This simple Java application sends a news search query to the API, and displays the response. JSONObject toJSONString method returns the JSON in String format that we can write to file. The unwrap method is used prior to materializing the JSON Object to a format that is expected by the currently used relational database. json-lib-x. Convert a Lucene SortField to an Elasticsearch Sort, trying to preserve the exact same meaning as the SortField would have in Lucene. Hence it is best to use this method after ensuring that this element is of the desired type by calling isJsonObject() first. pack( json ); Compress a JSON object as a LZW string after compress it using JSONC: // Returns the LZW representation as string of the JSON object. Like JSON, MongoDB's BSON implementation supports embedding objects and arrays within other objects and arrays – MongoDB can even 'reach inside' BSON objects to build indexes and match objects against query expressions on both top-level and nested BSON keys. Adds a member, which is a name-value pair, to self. // obtained Gson object Gson gson = new Gson();…. Converting key-value string into Map via GSON library There is some problem, how to convert key-value pair type string data into Map of the class object? Scenario- when we want to send a request object that has key-value pair property, Data comes from the. var lzwString = JSONC. For a string you can directly pass to the constructor of JSONObject. Java object to JSON file gson. Learn Java by Examples Java technology blog for core java concepts and coding best practices, and sharing knowledge for spring, struts, JAX-RS, Log4j, JUnit, Maven, Hibernate convert list to json object in java using gson. Gson (also known as Google Gson) is a small Java-based library for parsing and creating JSON objects. After this we setup our variables and then try to parse the jsonData into a JSONObject, which is just a java object representation of the JSON data. JSON Value. It provides support for converting pre-existing unmodifiable objects - which you don't have the source code of -, It has extensive support for Java Generics. It is easy for humans to read and write. com website for that. You can vote up the examples you like and your votes will be used in our system to generate more good examples. 1편에서 Spring Boot에서 데이터를 JSON형식으로 표현하는 가장 기본적인 방법인 클래스를 이용한 방법을 배웠다. fromJson() method to get HashMap from JSON string. Please reffer to the appropriate javadoc links available in the project menu. Create test code with JSON. Get Item Details Response. And use JSONObject to parse the json string, then display the parsed out string in text view. pack( json, true ); Decompress a normal JSON object from a LZW string:. JSONObject , you can use a for loop over the jsonObject. In this example, we are going to convert a Java collection/list/string[] array into appropriate JSON String using GSON library. The name must be a String, but the value can be an arbitrary JsonElement, thereby allowing you to build a full tree of JsonElements rooted at this node. In this tutorial we will go over steps on how to convert Java. I will demonstrate Gson fromJson method with help of example. it can be used to convert JSON string to Java objects. Hello toString method not working in JSONObject to string conversion. Gson is just the opposite. Whether you have to convert JSON to Java Object or otherwise, you need to write a lot of code that is tightly coupled with the JSON structure. 04/24/2018; 3 minutes to read +6; In this article. How to convert Java object to / from JSON (Gson)? Basically - this same tutorial will help you if you want to convert gson fromjson to map, gson fromjson to list, json fromjson to array, json string to arraylist in java. Quick Code Note: if respond is a String, convert to jsonObject first. Let us try to fix this using GSON. You can use Gson instance/object multiple times as it does not maintain any state. 将bean转换成Json字符串: public static String beanToJSONString(Object bean) { return new Gson(). It is a flexible approach and is analogous to D. Gson (by Google) is a Java library that can be used to convert a Java object into JSON string. I'm attempting JSON tree manipulation in GSON, but I have a case where I do not know or have a POJO to convert a string into, prior to converting to JsonObject. At first we will convert to Json string. Keys must be strings, and values must be a valid JSON data type (string, number, object, array, boolean or null). I manipulate the string in JavaScript to generate custom HTML. In this tutorial we will show you how you can deserialise JSON to Java Object using GSON. Learn Java by Examples Java technology blog for core java concepts and coding best practices, and sharing knowledge for spring, struts, JAX-RS, Log4j, JUnit, Maven, Hibernate convert list to json object in java using gson. RETRIEVE SMS list- java. 3 of the Gson user guide, titled "Nested Classes (including Inner Classes)". GsonBuilder gsonBuilder). In this case, we can use custom serialization and deserialization using two interfaces. String id, com. Converting json to a java object. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. An optional reviver function can be provided to perform a transformation on the resulting object before it is returned. JSONObject and com. These examples are extracted from open source projects. Since the Gson object can be configured to do extra escaping (i. That being said, DON'T do this!. You can convert JSON String to Java object in just 2 lines by using Gson as shown below Gson g = new Gson();. Search titles only; Posted by Member: Separate names with a comma. The fields that are marked with the @Expose annotation will be included in the JSON representation. How to Read and Write JSON using GSON; How to write JSON object to File in Java? How to read JSON file in Java - JSONObject and JSONArray How to convert String. java jsonobject 使い方 (12). It is a flexible approach and is analogous to D. Its external form is a string wrapped in curly braces with colons between the names and values, and commas between the values and names. Krishnan Mahadevan I believe that selenium code base stopped using JSONObject from 2. GSON GSON provides two useful methods and everything moven around these two methods. It builds a tree of JsonObject nodes. JsonParser which can be used to parse the input JSON string into a tree of com. This is an excerpt from the Scala Cookbook (partially modified for the internet). Here's a sample Scalatra POST method where I receive a JSON string and convert it to a StickyNote case class object: Scala case classes, Gson, Json object deserialization, and Scalatra | alvinalexander. A primitive value is either a String, a Java primitive, or a Java primitive wrapper type. xml file and specifying a property in the application. By default, Gson compact-print the JSON output :. forName() helps you to prevent importing unnecessary classes in your class just for getting their class instance. The second Request is a JsonObjectRequest. Context context, com. toJson(obj, new FileWriter("C:\\fileName. JsonObject properties, java. Although the examples use a Gson converter, the same concept can be used with most of the other supported ones as well. What is Gson? Gson is a Java Library widely used to convert Java Objects into their JSON representation and vice versa. It's a standard text-based format which shows structured data based on JavaScript object syntax. This simple Java application sends a news search query to the API, and displays the response. Java Code Examples for com. The returned stream contains a tuple for each execution performed against a window partition. It a parser to parse Json into a parse tree of JsonElements, The GSON's JsonParser class can parse a JSON string or stream into a tree structure of Java objects. Here I'm going to share most useful concept which belongs to the conversion between JavaObjects to JsonObject and JsonObject to JavaObject and JavaObject can be anything like Map or Pojo or something else and sometimes there can be needed to view data stored in a map but if that map is containing big data then there can be difficult to view all data inside that here I will give you most simple. The way my yaml deserializer works, it defaults JSON objects to Map when you don't specify a type, but gson doesn't seem to do this. Your best option is to convert the String to JSON, then convert both JSON objects to class instances, then compare the instances with the class’s equals method. However I'd like to provide you with a new tutorial that goes over how to perform the same task of fetching and parsing JSON into Java objects with GSON, but usi. Of course, we could add more nested objects for the user's payment method or work address. GSON Api consists a Class named Gson in the package 'com. The second Request is a JsonObjectRequest. The first approach we'll see for converting a JSON String to a JsonObject is a two-step process that uses the JsonParser class. Spring Boot uses Jackson by default for serializing and deserializing request and response objects in your REST APIs. JsonElement from the json string. String appUrl, android. JSONObject 를 MAP으로 변환, JSONArray를 List로 변환하는 제일 간단한 방법 제일 단순한 방법을 gson 라이브러리를 사용하면 된다. The issue you have above is that you assume the next object in the original JSONObject is a string. A builder for creating JsonObject models from scratch. This is the method to convert a JSON string to a pretty print version. please help heres my code below. If you want to use GSON instead of Jackson then it’s just a matter of adding Gson dependency in your pom. GSON it reasonably easy to use, but in my opinion not as elegant as Jackson or Boon (the winner in my opinion). JsonObject无法强制转换为Java中的com. Using the com. Gson correctly created the nested userAddress JSON object. It can also be used to convert a JSON string to an equivalent Java object. Now a days everything is transferred between the systems is JSONObject. OK, I Understand. By using Gson, we can generate JSON and convert a bean/ java object to a JSON object. We use cookies for various purposes including analytics. GSON: How to get a case insensitive element from Json? Unfortunately there doesn't seem to be a way in the current implementation to do this. Java object to JSON file gson. You can click to vote up the examples that are useful to you. We need to add the gson library in our project in order for us to use it. it can be used to convert JSON string to Java objects. It could either be a JsonObject, a JsonArray, a JsonPrimitive, or a JsonNull. On reading side, JsonElement provides isJsonXXX methods to check the type of Json element and getAsYYY() methods to get the actual data on that tree node. What I unsuccesfully do: String string = "abcde"; Gson gson = new Gson(); JsonObject json = new JsonObject(); json = gson. Given the Map of String and object (Map), we would like to convert Map to JSON and vice versa. Source code is available at author's Github repository. How to convert a String to JsonObject using Gson library. Get started. keySet() instead of the while loop. What is Gson? Gson is a Java Library widely used to convert Java Objects into their JSON representation and vice versa. When strict is set to false (recommended), it forgives reordering data and extending results (as long as all the expected elements are there), making tests less brittle. TypeToken which represents a generic type. line 5: In order to retrieve a property from the JSON document you should use the get() method. You can also use other popular library like Gson or Jackson to do the same task. Hello toString method not working in JSONObject to string conversion. Create a new instance of this class and use the method public <T> T fromJson (String json, Class<T> classOfT). json library. You can click to vote up the examples that are useful to you. The methods in this class can be chained to add multiple name/value pairs to the object. You can probably fix it by writing a TypeAdapter that just sets replies to an empty listing if it's an empty string. Is your JSON coming in as a JSON string? If it is you don’t need to convert it to a JSON object if you’re using GSON. It handles each record as it passes, then discards the stream, keeping memory usage low. Learn Java by Examples Java technology blog for core java concepts and coding best practices, and sharing knowledge for spring, struts, JAX-RS, Log4j, JUnit, Maven, Hibernate convert list to json object in java using gson. These examples are extracted from open source projects. Preparation 1. Also, it can used to convert the JSON string into equivalent java object. jsonobject是经常会用到的json工具包,同样它的转换方法也会经常被我们使用,包括对象转成json串,json串转成java对象等,如果过一段时间不用的话很容易就会忘记,所以将使用方法总结如下,以便以后忘记了方便. Read JSON content from a file using GSON in Java : This tutorial will show you how to read JSON content from a file in Java using the GSON library. Use Google's GSON API Java Google Json (Gson) Introduction. You can able to convert Java ArrayList Object to JSON using third parry lib called GSON. RETRIEVE SMS list- java. Gson tutorial shows how to work with JSON in Java using Gson library. So the fields that are not annotated e. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. We use cookies for various purposes including analytics. Processing 2. GSON is simple and easy to use Open-source API to convert JSON formatted data to JAVA Objects and JAVA Object to JSON Representation. 1 day ago · Moshi is a modern JSON library for Android and Java from Square. 6 now includes a low-level streaming api and a new parser which is actually faster than jackson". Convert Java Object to Json String using Jackson API JSON Stand for JavaScript Object Notation. Deserialize JSON data returned from Retrofit, using GSON. For example, in normal cases suppose that you have a list of cars returned as an array from your backend, but when the number of cars in the list is one, you are given just an abject instead of array. AlarmClock; BlockedNumberContract; BlockedNumberContract. To encode our Java object, all we need to do is create an instance of the Gson class, then call its toJson method, passing an instance of the class we wish to serialize. JSONObject and com. fromJson(jsonOutput, listType);. The toString and fromString methods allow Hibernate to converts a JSON Object to a String and to reconstruct a JSON Object from its String representation. I will show you how you implement that. 推荐:Google-gson, 将JSON 转换为 Java 对象或者将Java对象转换成JSON 的Java库,可以在Android上使用. Now a days everything is transferred between the systems is JSONObject. Of all the libraries mentioned I would in. I´m not using an EditText to get data. JavaScript Object Notation (JSON) is a lightweight data exchange format. Hello toString method not working in JSONObject to string conversion. Read more: json. Let’s get going. The problem with your code is that each of your "get" type methods is calling your #get(String) method which is the last place in your code that the stacktrace makes reference to. In more details, this tutorial describes how to create a JSON object in Android and how to read a JSON object. JSON was based on a subset of the JavaScript scripting language (specifically, Standard ECMA-262 3rd Edition—December 1999) and is commonly used with Javascript, but it is a language-independent data format. simple, is a simple Java library for JSON processing, read and write JSON data and full. When you iterate over the JSONObject, the next result could be one of your nested JSONObjects. Gson provides us a parser called JsonParser, which parses the specified JSON String into a parse tree of JsonElements :. Method 3: Using Gson library Gson is a google library that can also be used for conversion of a json string to object in java and vice-versa. We will go over details on how to convert HashMap to JSONObject in this tutorial. The getAsJsonObject() method of JsonElement can be used to get the element as JsonObject and getAsJsonArray() method of JsonElement can be used to get the element as JsonArray. We use cookies for various purposes including analytics. The JSON pretty print using Gson shows you how to Gson pretty print a json string with GsonBuilder. A JSONObject is an unordered collection of name/value pairs. JsonAdapter. There are two ways to convert json to java. JSONObject A JSONObject is an unordered collection of name/value pairs. GsonBuilder gb = new GsonBuilder(); Gson g = gb. The resulting parsed object will be used to populate a RecyclerView. This means that you are parsing the response as if it were a string, but actually it is a json object. Features of JSON. compile 'com. A protip by kencoder about json, java, and gson. A Gson is a json library for java, which is created by Google and it can be used to generate a JSON. In this GSON JsonReader tutorial we will take a closer look at what that means, and how the JsonReader works. classOfT is the java object to which the json is to be converted to. JsonObject class. GSON also has two other parsers. I've just started working with JSON for the first time and I've been trying to use JSONObject or JSONArray to parse my JSON string for the past few hours and I just can't get it to work. For this purpose we have created the Person class which will store all the previous information (for the sample we are only stoting the person id and name): public class Person {private int id; private String name; // Getter/Setter methods. Gson can work with arbitrary Java objects including pre-existing objects that you do not have source-code of. For example, we can create one JSON object on our web application and share it with an Android or iOS application. json library for supporting JSON data interchange format in Java. 44 and switched over to using gson. That being said, DON'T do this!. Parse JSON Use JSONObject And Gson Overview. [] and separated by a comma. I will demonstrate Gson fromJson method with help of example. The returned stream contains a tuple for each execution performed against a window partition. At the opposite, it can be used to convert JSON string to Java objects. Part 1 of this short series of articles ends with section 5. 接下来由脚本之家小编给大家介绍Android中gson、jsonobject解析JSON的方法,感兴趣的朋友一起学习吧. To use this ensure your pom. JSONObject A JSONObject is an unordered collection of name/value pairs. Gson can work with arbitrary Java objects including pre-existing objects that you do not have source-code of. [code]import com. Gson is a cool JSON library by Google. 負荷分散などでWebサーバが複数台あるシステムがあります。で、トラブル発生→ログ収集だ。となった時、いちいちファイルログファイルをコピーするのは非常に面倒です。. Gson fromJson method is used to convert JSON String or JsonObject or Reader to the corresponding object. Example 1 : For simple object. GSON also has two other parsers. In this tutorial we will show you how you can deserialise JSON to Java Object using GSON. The resulting parsed object will be used to populate a RecyclerView. Whether you have to convert JSON to Java Object or otherwise, you need to write a lot of code that is tightly coupled with the JSON structure. We will go over details on how to convert HashMap to JSONObject in this tutorial. We use three different Gson APIs to work with JSON. We also got through several basic examples with Gson. Basically – this same tutorial will help you if you want to convert gson fromjson to map, gson fromjson to list, json fromjson to array, json string to arraylist in java. Gson calls fromJson() when it needs to deserialize a JSON string fragment into a DateTime object Finer points with Serializers and Deserializers Often you want to register a single handler for all generic types corresponding to a raw type. JSONObject cannot be cast to org. Given an list of user defined objects,Convert list of POJOs to JSON String using google gson library (example). In a JSON file, curly bracket ({) represents a JSON object, we can retrieve a JSON Object using the below method. A JSON object has a key that is just a string. Former HCC members be sure to read and learn how to activate your account here. JSON objects are surrounded by curly braces {}. [code]import com. A Value of key/value pair create a JSON objects, In above example “keyObject” is the key. RETRIEVE email details- java. When GSON reads JSON data it allows to unmarshal it to a given Java class. Keys must be strings, and values must be a valid JSON data type (string, number, object, array, boolean or null). Gson correctly created the nested userAddress JSON object. GSON is one of those libraries, it's main functionality is that it can be used to serialize Java Objects into JSON string representation and vice versa, for deserializing JSON strings into Java Objects. Use this quickstart to make your first call to the Bing Entity Search API and view the JSON response. A JSONObject is an unordered collection of name/value pairs. Attendees; CalendarContract. A Value of key/value pair create a JSON objects, In above example "keyObject" is the key. i'm getting \ \ \ slashes in response string. 将Json字符串转换成对象: public static Object JSONToObject(String json,Class b Gson [Maven依赖] 和一些简单的例子. Gson fromJson method is used to convert JSON String or JsonObject or Reader to the corresponding object. Newer Than: Search this category only. Since the Gson object can be configured to do extra escaping (i. Gson is the main class used for converting JSON to/from java objects. It builds a tree of JsonObject nodes. It is a flexible approach and is analogous to D. Converting Objects from one form to another is a common request. You can use Gson instance/object multiple times as it does not maintain any state. It can convert Java objects into their JSON representation and vice versa. This post explains converting Java object to/from JSON using Google GSON library. I know how to iterate over JSONArrays, but when I parse JSON data from Facebook I don't get an array, only a JSONObject, but I need to be able to access an item via its index, such as JSONObject[0] to get the first one, and I can't figure out how to do it. The JSON you have doesn't match the class you are trying to deserialise to. line 1: The Gson() object is thread safe, so you can define it once and reuse across multiple threads. This example will tell you how to use org. GSON Api consists a Class named Gson in the package 'com. Your best option is to convert the String to JSON, then convert both JSON objects to class instances, then compare the instances with the class’s equals method. A JSON object has a key that is just a string. 4) public JSONObject (String json): – Creates a new JSONObject with name/value mappings from the JSON string. Firstly, let’s see a POJO class which will be converted to JSON for all our examples. If the passed object is a string it will return TRUE if it has a non zero length. Source code is available at author's Github repository. You wonder what is JsonObject of type. Given the Map of String and object (Map), we would like to convert Map to JSON and vice versa. In this example, we use the Gson tree model API to read Java objects from JSON file. In this Android tutorial, William J. Google Gson is a Java library that can be used to convert Java Objects into their JSON representation. I've just started working with JSON for the first time and I've been trying to use JSONObject or JSONArray to parse my JSON string for the past few hours and I just can't get it to work. Convert Java Object to Json String using Jackson API JSON Stand for JavaScript Object Notation. Syntax public JsonElement toJsonTree(java. Join the CodinGame community on Discord to chat about puzzle contributions, challenges, streams, blog articles - all that good stuff!. Can't seem to figure this out. What I unsuccesfully do: String string = "abcde"; Gson gson = new Gson(); JsonObject json = new JsonObject(); json = gson. Learn more about this Java project at its project page. The date format will be used to serialize and deserialize Date , Timestamp and Date. There are two ways in which Gson library can be used to convert json string to an object. ClassCastException: org. The JSONDeserializer supports deserializing json into an already existing instance. toJson() – Convert Java object to JSON format fromJson() – Convert JSON into Java object Convert Java object to JSON using GSON can convert java object to json using 'toJson' method from 'Gson' API. You can click to vote up the examples that are useful to you. Building a json from Primitive types and String If you dont want to build json from a java object but want to build it from scratch then look at the example below. I tend to separate IO from business logic, so the need to have the deserializer return objects exactly as needed by the core logic is zero, it is going to have to pass through validation and consistency checking regardless. This tutorial is useful even if you are new to use JSON in Android This Android tutorial describes how to parse JSON data in Android. You can vote up the examples you like and your votes will be used in our system to generate more good examples. Once we have our JSONObject, we can try to deserialize it into a java object by using the fromJson method. Get Item Details Response. 20 JSONObject JSONArray 에 대한 이해 및 사용법 2014. Gson is an opensource library Read more…. The date format will be used to serialize and deserialize Date , Timestamp and Date. By using Gson, we can generate JSON and convert JSON to java objects. Gson gson = new Gson(); 로 인스턴스를 만들고 String json = gson. Since a lot of our readers are Android developers, we'll tailor it for you, but Gson can be used in any Java environment. This example Java source code file (RuntimeTypeAdapterFactory. In general, Gson provides the following API in its Gson class to convert a JSON string to an object: public T fromJson(String json, Class classOfT) throws JsonSyntaxException; From the signature, it's very clear that the second parameter is the class of the object which we intend the JSON to parse into. How to Convert JSON array to String array in Java - GSon example. 五种方法解析各种情况下的JSON数组 这里的 "muser" ,就是数组的名称,称它为数据头,防止跟里面的字段有歧义 如果没有数据头,那就叫它纯数据,或者纯数组数据 代码中用. string to json object with using gson The Gson is an open source library to deal with JSON in Java programs. As JSON rules are standard, all applications can share any information easily. It can also be used to convert a JSON string to an equivalent Java object. I know Gson, JSON -- it sounds like a bad tongue twister. Since the Gson object can be configured to do extra escaping (i. Questions: I am converting InputStream to JSONObject using following code. Gson can work with arbitrary Java objects including pre-existing objects that you do not have source-code of. In the Java ecosystem, several libraries which that you can use to serialize Java objects to JSON, transmit the JSON data over a network, and deserialize the JSON back to Java objects. 0' PARSING JSON OBJECT RESPONSES : A json object response is of the form {}. The pattern to use. I am calling an Online API which returns data in the JSON format, Since I am HTTPUrlConnection, InputStreamReader, I get a stringbuffer which has all the JSON in the form of string. http://stackoverflow. Retrofit JsonObject: public List getKeyNamesFromJsonObject(JsonObject jsonObject) {. You can click to vote up the examples that are useful to you. Convert java Object to JSON string and PRETTY PRINT using com. JSON即JavaScript Object Natation, 它是一种轻量级的数据交换格式, 与XML一样, 是广泛被采用的客户端和服务端交互的解决方案. Usually, most of the application require interchanging of data from the server. Thus, this request should finish at last (in cases when the response from the server is quick, the priority won’t work). Gson instances are Thread-safe so you can reuse them freely across multiple threads. We can call the toJson() method of Gson class to convert a Java object to a JSON object. MobileServiceClient (java. String id, com. In this tutorial, we will show you how to enable JSON pretty print in Gson framework. Here is the pom. Krishnan Mahadevan I believe that selenium code base stopped using JSONObject from 2. Java Code Examples for com. This article explains how to use Google Gson to convert Java Object to JSon and write content to a file. JsonObject) は異なります。. It can also be used to convert a JSON string to an equivalent Java object. classOfT is the java object to which the json is to be converted to. You may have interest to read - How to parse JSON with Jackson or Gson JSON. // obtained Gson object Gson gson = new Gson();…. Gson tutorial shows how to work with JSON in Java using Gson library. Gson (by Google) is a Java library that can be used to convert a Java object into JSON string. create(); // then you can do g. Gson in java How to convert JSON array to List using com. 5, includes support for Enums in JSONArray and JSONObject. First, we need to convert the JSON string into a JSON Object, using JSONObject class.