In java to create a csv file is simple, you would require to use the comma, because wherever the comma will be inserted within the text it will change to the new column that is you can say wherever you want to change to the new column you can use the comma within text. The main classes are: org. The utility contains the same powerful conversion engine as the popular online converter at json-csv. JsonNode based APIs 3. There are alternative libraries available, like the CDL class from org. CSV is easy to read and understand. Jackson is a high performance Java library that can be used to convert Java Objects into their JSON representation. How to format JSON String in Java - Jackson Example Tutorial. Convert java object to Json using jackson library In this example we are going to learn how to convert java object into the json format. The json library in python can parse JSON from strings or files. Needed to support CSV-like file formats that include additional non-data content before real data begins (specifically some database dumps do this) nullValue (String) [default: "" (empty String)]: When asked to write Java `null`, this String value will be used instead. Showing the imports of those classes would also. json", and write out the descriptions for each project. In a previous article we covered the basics of using JAXB with its annotations to convert java objects to XML and back. In this tutorial, we show you how to use Jackson’s data binding to convert Java object to / from JSON. Jackson API is a multi-purpose Java library for processing JSON. There are many CSV to JSON conversion tools available… just search for “CSV to JSON converter”. Convert JSON to Java Object. The tool will Convert CSV or TSV formatted data to JSON. Read the CSV file in a loop, mapping the desired columns to an object (or JSON-like string) with your desired structure and then insert the object into DynamoDB. Besides the regular columnar data there are 2 JSON fields data as well. xmlにjackson // 型 → シリアライズルールを定義している型 → ItemFlatMixin. As you might have noticed in my previous JSON tutorials that the output of the programs is not properly formatted, which makes them hard to read, especially in large log files where there are so many other texts,. Jackson is packaged in to a jar file which contains all necessary data required for using JSON. If you are familiar with Jackson, this XML data format behaves in the same way as its JSON counterpart, and thus can be used with classes annotated for JSON. Next, you will move on to binding json with dates, lists, arrays, and enums. CSV documents are essentially rows of data, instead of JSON Objects (sequences of key/value pairs). 1エンドポイントでJSON,Yaml,CSVに対応する pom. In this course, Java: JSON Databinding with Jackson, you will learn foundational knowledge to bind json data with java objects using the Jackson library api. Class JacksonFactory. Automate your JSON to CSV conversions simply and on demand. For a long time, I only knew that Jackson can be used to parse JSON but later realized that you can also use it to parse or read CSV file in Java. Convert java Object to JSON string and RENAME PROPERTIES using com. Basically, the json doc maybe is a json array, right? so it will be same. This will only take 3 steps to integrate JSON in your web project. Other interesting posts you may like. Use this tool to convert JSON into CSV (Comma Separated Values) or Excel. We can convert CSV data to JSON data using the CsvMapper class, it is specialized ObjectMapper, with extended functionality to produce CsvSchema instances out of POJOs. A list of Java objects gets serialized to a list of JSON objects containing the fields and their values. We decoded the JSON string into an associative PHP array. org/yaml-to-json-xml-csv Difference between YAML and JSON Next Post JAVA :. Nested documents will have a '. The table layout looks like this (other fields removed for. each exampleHow to access JSON object in JavaScriptJackson : was expecting double-quote to start field name Java JSON Tutorial […]. Jackson Json Mapping In Selenium Testing Java. Usually, If the JSON file is small or has a simple structure then I would use any of the online converters to quickly convert it to CSV. It is also possible to use JsonFormat. CSV and TSV are always going to be smaller than JSON and I like that, so often times, I actually prefer to load a CSV file into the page and convert it into JSON with JavaScript. Table of Contents1. 30-day free trial. You can choose whether to write the header record & what delimiter to use. Convert JSON to CSV. Jackson can now deserialize a JSON based hierarchical model into a POJO (plain old java object) graph. JSON: json is a java script object notation which used as a open standard format to transmit or communicate between server and client or web application. In this tutorial, we have covered the json-simple and Jackson modules, showing the strengths and weaknesses of each one of them. All popular websites offer JSON as the data exchange format with their RESTful web services. JSONObject – This class stores unordered key-value pairs. Jackson API In this article, a predefined JSON String is converted into Java Object using GSON. - jackson API provides default mapping for most of the objects to be serialized. 8 (205 ratings) Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately. JSON serialization and deserialization of JAVA objects with Jackson: a concrete example Posted on December 17, 2014 by Davis Molinari [Questo articolo è disponibile anche in ITALIANO: Serializzazione e deserializzazione JSON di oggetti Java con Jackson: un esempio concreto ]. 1) Copy/paste or upload your Excel data (CSV or TSV) to convert it to JSON. Flat versus hierarchical data. In a previous article we covered the basics of using JAXB with its annotations to convert java objects to XML and back. JacksonJaxbJsonProvider The following are top voted examples for showing how to use com. This kind of conversion is normally done via third-party libraries as it's not supported by the JDK itself and requires a hard work to do it manually. We download the CSV file using the DOM method and allow the entires of results to have different number of headers. JSON to CSV converter is used to convert JSON text or file into CSV or delimited format. Free online CSV to JSON converter. The Liquid Data Mapper is a flexible data transformation and mapping tool. because, I need to get approval to use. Jackson It is a high performance JSON processor. If you do not want to use a script, you can try OpenRefine (formerly Google Refine). A list of Java objects gets serialized to a list of JSON objects containing the fields and their values. Leer un archivo en formato JSON y utilizar el parser Jackson 2. Featured on Meta Congratulations to our 29 oldest beta sites - They're now no longer beta!. Not all XML/JSON message format can be mapped to CSV. This tutorial shows 2 ways for converting Java objects to JSON. In computing, a comma-separated values (CSV) file stores tabular data (numbers and text) in plain text. When testing APIs with json response, QA engineers need to verify Json response. Spring boot custom JSON Serialize - Deserialize Example or we can say Spring boot Jackson @JsonComponent Example for custom JSON Serialize or Deserialize. In this JSON vs CSV article, we have seen that both JSON vs CSV file is used for storing the data in different forms and format. GitHub Gist: instantly share code, notes, and snippets. JSON to CSV helps convert JSON data to CSV. Automate your JSON to CSV conversions simply and on demand. Apache Maven is a software project management and comprehension tool. JSON (JavaScript Object Notation) is a lightweight data-interchange format. I have tried using the Jackson CSV library but this requires me to create a pre-defined POJO as a middle tier (JSON -> POJO -> CSV). In this tutorial, we will show you how to use Jackson 2. In computing, JavaScript Object Notation (JSON) (/ ˈ dʒ eɪ s ən / "Jason") is an open-standard file format that uses human-readable text to transmit data objects consisting of attribute–value pairs and array data types (or any other serializable value). Let us have a look in to code example. See Parse mark up language (JSON, html, xml ) for the input part, and OpenRefine Tutorial for the output part. It supports custom CSV column separators and custom quote characters for fields. The reason I ask is because the json-jruby library generates JSON strings a tad slower than Jackson. Any CSV message structure can be mapped to an XML or JSON message format. Introduction. As far as I know, Java does not allow me to dynamically generate a class' member variables at run. The following rules will be applied during the conversion process: The entire CSV document becomes a JSON array; Each line becomes a JSON object; Each column becomes a property of the JSON object *The maximum size limit for file upload is 2 megabytes. Read JSON Object Using Jackson in Java Jackson is a multi-purpose Java library for processing JSON. Json Conversion Using Jackson Json Conversion Using Gson. It is also possible to use JsonFormat. Jackson First we will create an ObjectMapper, a class that provides the ability to convert between java and json, to deserialize json to java ArrayList. Converting JSON to/from Java Objects using JACKSON API Created on: June 27, 2015 | Last updated on: September 30, 2017 websystiqueadmin This post explains Jackson data-binding , which is a common approach when dealing with JSON using Jackson API in your Java projects. In this tutorial, I show you how to create a JSON content using Jackson JsonGenerator class and how to read JSON content using Jackson JsonParser class. You could do it easily. Jaspersoft Studio Jaspersoft® Studio is editing software for JasperReports®. Jackson can now deserialize a JSON based hierarchical model into a POJO (plain old java object) graph. In this post we will see how to Convert Java Map to/from JSON using Jackson. Jackson XML is a Data Format which uses the Jackson library with the XMLMapper extension to unmarshal an XML payload into Java objects or to marshal Java objects into an XML payload. Jackson has a powerful feature that it can convert to JSON from a Java object with JAXB annotations. Though, this is a trivial example and actual object could be more complex, it demonstrate the process of creating Java object from JSON String. The json library in python can parse JSON from strings or files. javainterviewpoint". Attributes may or may not be in quotes. (note: for general information on Jackson 2. Written by Alexander Say Thanks. It is easy for humans to read and write and for machines to parse and generate. Json To Csv Converter on the application's round blue button will open a list of options: a Json To Csv Converter link (if you do not feel like dragging and dropping), an option to bring all Json To Csv Converter windows to the front, a link to post images to Json To Csv Converter, and the Settings tab. Parse JSON for Java using org. Press button, get result. Jackson: Using Multiline Strings in JSON¶ It looks handy to have an ability to store multiline strings in JSON. below is the working code. The class ObjectMapper is the main api of Jackson 2. If you use headers option, this tool will use JSON object keys as column names. The JSON filename extension is. This will only take 3 steps to integrate JSON in your web project. Mapping a Dynamic JSON Object with Jackson The implementation of all these examples and code snippets can be found in my GitHub project - this is an Eclipse based project, so it should be easy to import and run as it is. To parse a json file. JSON to CSV Api. Since JSON will be in the form of Key Value pairs it can be easily converted to Java map. because, I need to get approval to use. Showing the imports of those classes would also. In this quick jackson tutorial , I am giving examples of converting java objects to/from json programmatically. - jackson API provides default mapping for most of the objects to be serialized. El análisis de JSON en Spring MVC usando Jackson JSON Ok, así que he estado buscando esto por un poco de tiempo y ahora no soy más adelante. json, but we’ll just focus on the Jackson library here. Let me know if you have any query on how to convert json object to java object. txt JSON file in java. For example, we might have a CSV file like below. JSON (JavaScript Object Notation) is a lightweight data-interchange format. The enum is defined by Java as, An enum type is a special data type that enables for a variable to be a set of predefined constants. 3 What if some complex JSON structure doesn’t map easily to a Java class? Answer: Try Jackson TreeModel to convert JSON data into JsonNode, so that we can add, update or delete JSON nodes easily. Each line of. There are alternative libraries available, like the CDL class from org. See Parse mark up language (JSON, html, xml ) for the input part, and OpenRefine Tutorial for the output part. This post shows how you can convert a simple CSV file to JSON in JavaScript. 1) Dependencies. Use this tool to convert JSON into CSV (Comma Separated Values) or Excel. java that implements the validation logic. Join the discussion. each exampleHow to access JSON object in JavaScriptJackson : was expecting double-quote to start field name Java JSON Tutorial […]. x to convert Java object to/from JSON using Jackson API. ObjectMapper class is the part of the jackson library. js JS library in your document. How to Pretty Print JSON with Gson and Jackson May 20th, 2015 Leave a comment Go to comments In my last article , I compared two leading JSON APIs in Java: Jackson and Gson. This tutorial shows 2 ways for converting Java objects to JSON. It's very simple and easy way to transform and share JSON to CSV data Best and Secure JSON to CSV works well in Windows, Mac, Linux, Chrome, Firefox, Safari and Edge. If you use jackson to unmarshal json to POJO, then you can now specify a header in the message that indicate which class name to unmarshal to. This talk offers introduction to reading and writing XML and CSV using Jackson. Jackson JSON: using @JsonPropertyOrder annotation to define properties serialization order Posted on October 24, 2016 by Davis Molinari In the comments to a previous article a blog reader asked support for how to customize the order in which the properties of an object appear in the string resulting from its JSON serialization, using the. Needed to support CSV-like file formats that include additional non-data content before real data begins (specifically some database dumps do this) nullValue (String) [default: "" (empty String)]: When asked to write Java `null`, this String value will be used instead. Next calling ObjectMapper. Reading JSON – Data Binding in Jackson. How to Convert CSV to JSON in Java CSV data can be converted to JSON via a POJO using Jackson or, if a POJO is not defined or required, you can use the Java Collection classes. Lets see how to read JSON using Jackson Streaming API. Jackson has low level parsing and generating API, I have used it before, it includes 3 level api for JSON processing. Java - Convert Excel File to/from JSON (String/File) - using Apache Poi + Jackson In the tutorial, Grokonez shows how to convert Excel File to JSON String or JSON File and vice versa with Java language by examples. Convert json to java object using Gson library; Convert java object to json format using Gson libr Convert Json to Java object using Jackson library; Convert java object to Json using jackson library; JavaScript to disable numbers in the text box; Disable right click from the web page. Java JSON data Binding JSON (JavaScript Object Notation), is a simple and easy to read and write data exchange format. 1 uses sample data in JSON format. As an alternative, Jackson might be used to transform the object to its JSON representation. We decoded the JSON string into an associative PHP array. 30-day free trial. Read JSON Object Using Jackson in Java Jackson is a multi-purpose Java library for processing JSON. This trial version allows you to convert JSON files under 1 MB. CSV is easy to read and understand. Alternatively, you can flatten nested arrays of objects as requested by Rogerio Marques in Github issue #3. Let me know if you have any query on how to convert json object to java object. It is also a Java library but it is wrapped up with a nice Ruby interface. JSON Processing. CSV data can be converted to JSON via a POJO using Jackson or, if a POJO is not defined or required, you can use the Java Collection classes. You can also create a JSON to CSV export button very easily. Let us have a look in to code example. You can now use MOXy to. These examples are extracted from open source projects. Let me know if you have any query on how to convert json object to java object. Checkout the examples. CSV to JSON Converter. Jackson API In this article, a predefined JSON String is converted into Java Object using GSON. The Java program should read in the JSON file and convert it to a CSV file using the bar/pipe ("|") symbol as the delimiter. readValue passing json and call a method that creates a collection of a specified NavItem type. In this part of the Spark SQL JSON tutorial, we’ll cover how to use valid JSON as an input source for Spark SQL. The implementation was introduced in Java EE 7. ObjectMapper. Jackson - Serialize objects with LocalDate (default). Flat versus hierarchical data. This only works when @JsonFormat is used on the class level of the target type. Here i would like to share that how to convert a csv file contents to JSON object in JAVA Included Libraries org. configure(DeserializationConfig. A Jackson is a Java JSON API that provides several different ways to work with JSON. In short, The "com. A list of Java objects gets serialized to a list of JSON objects containing the fields and their values. Automate your JSON to CSV conversions simply and on demand. The most basic schema is a blank JSON object, which constrains nothing, allows anything, and describes nothing: You can apply constraints on an instance by adding validation keywords to the schema. Author Jay Sridhar Posted on February 27, 2017 March 6, 2017 Categories Uncategorized Tags collections, csv, jackson, java, json. Building a Node. It is also a Java library but it is wrapped up with a nice Ruby interface. CSV to JSON - array of JSON structures matching your CSV plus JSONLines (MongoDB) mode CSV to Keyed JSON - Generate JSON with the specified key field as the key value to a structure of the remaining fields, also known as an hash table or associative array. Jackson is a very popular and efficient java based library used to serialize or map Java objects to JSON and vice versa. Enter your JSON and your query and immediately see the extracted results in the browser. Here's an example on how you can convert json to java object. How to use it: Download and import the CSVExport. Few notes about JSON: It is a simple text format similar to XML. This makes the JsonParser faster than the ObjectMapper, but also more cumbersome to work with. Spring boot has packaged Jackson and are using Jackson for objects serialization and deserialization. ObjectMapper) is the simplest way to parse JSON with Jackson. JSON written with Jackson can contain embedded class information that helps in creating the complete object tree during deserialization. e JsonParser and JsonGenerator. In this course, Java: JSON Databinding with Jackson, you will learn foundational knowledge to bind json data with java objects using the Jackson library api. However, many people are not familiar with JSON format and for some, JSON is more difficult to understand than a spreadsheet format like CSV/Excel. 2 にプロパティエディタ. JSON (JavaScript Object Notation) is a lightweight data-interchange format. Folder Structure: Create a new Java Project "JacksonJSONTutorial" and create a package for our src files "com. Fix Jackson/JAXB JSON Serialization Problem with Spring Data Neo4j @NodeEntity Objects Spring Data Neo4j @NodeEntity - annotated objects are proxy -enriched by Spring Data Neo4j aspects using AspectJ. There are many CSV to JSON conversion tools available… just search for “CSV to JSON converter”. Convert Json To Excel In Java Example too. json", and write out the descriptions for each project. This can be as much as 200% faster for some workloads. Gson in java Convert java Object to JSON string and EXCLUDE/IGNORE PROPERTIES using com. js Application for CSV Data to JSON Data Parsing. Use JSON pointer standard to define the data for the conversion. Mapping a Dynamic JSON Object with Jackson The implementation of all these examples and code snippets can be found in my GitHub project – this is an Eclipse based project, so it should be easy to import and run as it is. 2 to have Jackson 2. Attributes may or may not be in quotes. Convert java object to Json using jackson library In this example we are going to learn how to convert java object into the json format. For example, merging nested Maps with Jackson works as expected:. That's all on How to convert JSON String to Java object using Jackson library. json-jackson. Depending on what's in the JSON files and the schema of your database, you might have quite a bit of conversion work to do before you create the new file. Example Java Enum. Benefits of JSON over XML. The script is written in Python2. This provides an easy way to view or extract your JSON data. We will use the jackson's objectmapper, to serialize list of objects to JSON & deserialize JSON to List of objects. JSON Data Mapping. 6, value will also be recognized during value reads. In this method, we use the Java Collection classes to store the parsed data and convert those to JSON. So, I want to write common code for json object comparision. The Java API for JSON Processing (JSON-P) is described in JSR 353. Gson is just the opposite. The following are top voted examples for showing how to use com. Create file crunchify. Whether to lookup and use default Jackson ObjectMapper from the registry. This means output will be 2 json files. Mapping a Dynamic JSON Object with Jackson The implementation of all these examples and code snippets can be found in my GitHub project - this is an Eclipse based project, so it should be easy to import and run as it is. JSON to CSV Input Now I am going to use a more “exciting and amazing” JSON example, in this case using something from the real world, the result of listing all jobs from Jenkins CI. These examples are extracted from open source projects. Few notes about JSON: It is a simple text format similar to XML. For example, when I define a JSON property in my schema of type string, if I also attach the rule "format" : "uri" to that property (because my string is actually a URI) then my corresponding Java property will now have the type java. The main classes are: org. x used for data-binding. We download the CSV file using the DOM method and allow the entires of results to have different number of headers. x to convert Java object to/from JSON using Jackson API. The value can be Boolean, JSONArray, Number, String or JSONObject. Use this tool to quickly generate model classes for Java or POJOs from a sample JSON document. This tutorial shows how to validate JSON against Schema in Java. Hi guys In the previous post we saw how to write JSON using Jackson. json, but we'll just focus on the Jackson library here. Use this annotation when your JSON property names are different to the fields of the Java object class, and you want to map them. Unfortunately, the code fails with an exception when attempting to read the JSON back in to the object. Jackson – Convert Java object to JSON Posted on September 11, 2015 by admin In this Jackson tutorial we will see how to do data binding between Java object and Json , In the below example we can see how to Convert Java object to JSON. The java JSON Jackson is a JSON library for Java It has very powerful data binding capabilities and provides a framework to serialize custom java objects to JSON and deserialize JSON back to Java objects. Enter Main Pojo Class Name Select Input Type JSON XML Enter JSON or XML here Tweet: Srinivas Dasari find me. If you use headers option, this tool will use JSON object keys as column names. Depending on what's in the JSON files and the schema of your database, you might have quite a bit of conversion work to do before you create the new file. There are alternative libraries available, like the CDL class from org. Given the nature of CSV data, the JSON object produced has all the columns of the `. Jackson supports this use-case (which works if you do not pass "CSV schema"), but it is not a very convenient way. The JSON is exactly how I want things to look. Opal-Convert JSON to CSV to JSON latest version: Opal-Convert JSON/CSV allows you to convert from CSV or Excel format to JSON and back again from JSON to CSV/Excel. A list of Java objects gets serialized to a list of JSON objects containing the fields and their values. This is a common task for Java developers to convert JSON to Java objects and vice-versa so I show you how to do that with examples. As we know, it can be solved by using the Jackson annotation for configuring Serializer class to serialize the associated value. ObjectMapper class is the part of the jackson library. Using a combination of an HTTP transport style Business Service, a Service Callout and a Native XSD mapping, it turns out to be fairly easy to implement. Jackson First we will create an ObjectMapper, a class that provides the ability to convert between java and json, to deserialize json to java ArrayList. The Jackson JsonParser class is a low level JSON parser. As you might have noticed in my previous JSON tutorials that the output of the programs is not properly formatted, which makes them hard to read, especially in large log files where there are so many other texts,. public final class JacksonFactory extends JsonFactory Low-level JSON library implementation based on Jackson 2. JsonParser – Parse JSON. Hi ALL, I am planning to compare two json objects at java side. public enum DeserializationFeature extends Enum implements ConfigFeature. convert json to csv java free download. Excel and CSV Conversion to JSON and XML in JavaScript That Runs 100% on Github. In computing, Jackson is a high-performance JSON processor for Java. Jackson JSON Java API also provide streaming support that is helpful in working with large json data because it reads the whole file as tokens and uses less memory. JSON Jackson Streaming API - read and write JSON After reading and writing JSON using GSON,we will use another way(i. Just paste your CSV in the input field below and it will automatically get converted to JSON. Create file crunchify. Here I am going to discuss about converting multiple nested JSON which might or might not contain similar elements to CSV for usage with tools like excel or open office calc. JsonParser - It is the base class of Jackson API for reading JSON content. This tutorial introduces about JSON Annotations via Jackson JSON Annotation Example. Jackson Java JSON-processor を使ってみます。 « MySQL で CSV をインポート Eclipse4. JsonNode based APIs 3. We find that, the default JSON serializer will serialize java. References. XML to JSON and JSON to XML converter online. Jackson) of reading JSON. For a long time, I only knew that Jackson can be used to parse JSON but later realized that you can also use it to parse or read CSV file in Java. Converting JSON to/from Java Objects using JACKSON API Created on: June 27, 2015 | Last updated on: September 30, 2017 websystiqueadmin This post explains Jackson data-binding , which is a common approach when dealing with JSON using Jackson API in your Java projects. JSON In Java2,386 usages. Convert java object to Json using jackson library In this example we are going to learn how to convert java object into the json format. Java JSON Jackson. Jaspersoft Studio Jaspersoft® Studio is editing software for JasperReports®. Download the entire CSV, show all rows, or show the raw data. Reading JSON - Data Binding in Jackson. Learn to use jackson objectmapper to populate java object from json string and write json string from java object. Happy Learning !!. Jackson Json Mapping In Selenium Testing Java. While CSV is the complete opposite, its structure data in column and rows. csv in redactor and save as xlsx or you can do the same action using google-drive. How to convert CSV file to JSON file in Java using Jackson. js Application for CSV Data to JSON Data Parsing. Description. Introduction. – Jon Raynor Jan 21 '14 at 21:39. How to format JSON String in Java - Jackson Example Tutorial. Jackson JSON: using @JsonPropertyOrder annotation to define properties serialization order Posted on October 24, 2016 by Davis Molinari In the comments to a previous article a blog reader asked support for how to customize the order in which the properties of an object appear in the string resulting from its JSON serialization, using the. How to read and write csv using jackson library The sample code below demonstrates how we can read a csv file into an array of objects. Maven Dependencies for Jackson The Jackson library is composed of three components: Jackson Databind, Core, and Annotation. Java Code Examples for com. The most basic schema is a blank JSON object, which constrains nothing, allows anything, and describes nothing: You can apply constraints on an instance by adding validation keywords to the schema. To do JSON parsing and generation you only need one class com. Introduction. JSON written with Jackson can contain embedded class information that helps in creating the complete object tree during deserialization. There are alternative libraries available, like the CDL class from org. You can format JSON String in Java using Jackson API's pretty print feature. It can also be a single object of name/value pairs or a single object with a single property with an array of name/value pairs. Lets see how to read JSON using Jackson Streaming API. 8 (205 ratings) Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately. Read and Write CSV Data with jackson-dataformat-csv. CSV and TSV are always going to be smaller than JSON and I like that, so often times, I actually prefer to load a CSV file into the page and convert it into JSON with JavaScript. In a previous article we covered the basics of using JAXB with its annotations to convert java objects to XML and back. You can now use MOXy to. Example of how to read a Pojo from a CSV file using Jackson JSON Processor. There are some examples given here. Welcome to Apache Maven. GSON: It is an open-source Java library which is used to serialize and deserialize Java objects to JSON.