Json Convert To Type

Check if your JSON is correct, if not find out why with just one click. ObjectMapper Use objectMapper. The first converts the json into an array of NavItems while the second deserializes a java generic type by specifying the correct parameterized type. when to prefer one over the other. You can run Apex code using a variety of mechanisms. net and Deserializing Anonymous Types Comments (5) | Share I had a situation where I had to deserialize a small chunk of JSON-formatted data and I didn't want to create a class for it since it was a very specific use and I was confident there wasn't a need to reuse it elsewhere in the application. This tool uses the mcrypt_encrypt() function in PHP, so for more infos about the parameters used check the manual. Return Values. When importing we reorder and rewrite the JSON, which means it's not going to look the same on the other side. In the JSON serialization, JSON objects are used for maps, while arrays and strings are serialized using a convention common to many programming languages. // If the JSON value is not of type array object (or missing), there will be an exception. Toggle navigation Xml2CSharp. Couldn't parse json. Because JSON syntax is derived from JavaScript object notation, very little extra software is needed to work with JSON within JavaScript. JSON is a syntax for serializing objects, arrays, numbers, strings, booleans, and null. Note the use of the $ operator to convert the JsonObject to its string representation. You can also extract only the portions of the JSON you want to convert and manipulate contents to obtain a GeoJSON dataset that fits your exact needs. We need a java class that mimics the structure of the json image. Our online converter of JavaScript Object Notation format to Geospatial PDF format (JSON to PDF) is fast and easy to use tool for both individual and batch conversions. Best Online JSON to Excel Converter: Online JSON data converter tool to Excel. The converter uses the DataContractJsonSerializer. NET Framework doesn't give you the tools to do it out-of-the-box. It is based on a subset of the JavaScript Programming Language Standard ECMA-262 3rd Edition - December 1999. However, a UserType is not very developer-friendly so, in this post, I’m going to show how you. NET which provides the facility to convert this. Use any JSON validators to find and fix errors. Under the covers, JSONassert converts your string into a JSON object and compares the logical structure and data with the actual JSON. Try quicktype in your browser. About JSON feeds and XML feeds. How would I convert or make these as json file. JSON Editor Online is a web-based tool to view, edit, and format JSON. JSON (JavaScript Object Notation) is a lightweight data-interchange format. JSON editor in XMLSpy provides intelligent JSON and JSON5 editing functionality, as well as XML to JSON conversion and converting JSON to XML. The last Step is to retrieve the Outpout of the Writer in JSON. About JSON conversion to PHP Array. json exposes an API familiar to users of the standard library marshal and pickle modules. We can convert an array of any number of elements to a List that has the same type of elements. Convert Txt file to Json file. In short, we will learn how to convert excel to JSON in Node. The JSON type in MySQL stores. JSON from Relational Data With all the new JSON Features, is there a way to take queries over relational data (ie. The json data type can be used to store JSON (JavaScript Object Notation) data, as specified in RFC 4627. XMLSpy includes an enterprise-grade JSON Schema generator and graphical JSON schema editor that lets you create JSON Schemas, convert XSD to JSON Schema, generate JSON Schema, and even generate a JSON instance from a schema. Data returned for autocomplete are not formatted in a json list correctly Tag: python , flask My autocomplete view is matching users correctly, however the two users are returned as the same result, so I can't select one or the other to autocomplete. It is easy for humans to read and write. JSON Editor Online is a web-based tool to view, edit, and format JSON. JSON is a very common data format used for asynchronous browser-server communication, including as a replacement for XML in some AJAX-style systems. NET framework object (usually a collection of some kind). That’s why we will be using also writeStream to write back the transformed data on the disc in a file called test-data-output-stream. With Ask the Experts™, submit your questions to our certified professionals and receive unlimited, customized solutions that work for you. If the input JSON file has the hasZ or hasM property set to True, the output features will have z- and m-values. Row; Nested; Row type of conversion : The first row will be considered as header, and the rest rows will be interpreted as data. So, it will be faster to write and slower to read. When writing computer programs of even moderate complexity, it’s commonly accepted that “structuring” the program into reusable functions is better than copying-and-pasting duplicate bits of code everywhere they are used. For discussion on the Legacy MongoDB Extended JSON v1, see MongoDB Extended JSON (v1). JSON - JavaScript Object Notation Format introduction: In computing, JavaScript Object Notation or JSON 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). In the JSON serialization, JSON objects are used for maps, while arrays and strings are serialized using a convention common to many programming languages. Step 1: Choose the JSON file you want to convert to SQL. 2) Set up options: parse numbers, transpose your data, or output an object instead of an array. By using $_SERVER['QUERY_STRING']. Please report bugs and send feedback on GitHub. com, loves math, coding and solving problems. To create an empty object, pass objectValue. JArray to a list of specific object type Convert Newtonsoft. I also use json. 15 will convert Unicode escapes to regular characters, and will therefore throw the same types of errors just described even if their input is of type json not jsonb. Unlike the once popular XML, JSON. I am writing a C# wrapper for a RESTful JSON API, and using Json. The FAQ Page Schema Generator is one of my new JSON-LD Schema Generators that can help you quickly create the required structured data for your content to be eligible for display as a rich result in Google search. Typically it involves only two steps, Create instance of com. SQLite is the most used database engine in the world. The following rules will be applied during the conversion process: Attributes will be treated as regular JSON properties. I have tried to deserialize a JSON array and convert the result into a dotnet object using the JavaScriptSerializer List styleList = (List;)jSerializer. Tag: json,dart. You can import builtin SDK frameworks/modules into Swift. Since this converter is specified on the property of the object we know at compile time what type each item is, it the type of the element in the array or list we are trying to deserialize. JSON is a very common data format used for asynchronous browser-server communication, including as a replacement for XML in some AJAX-style systems. To simplify schema management in such cases, it is often useful to convert fields in source data that have an undetermined schema to JSON strings in Athena, and then use JSON SerDe Libraries. org Category: Informational July 2006 The application/json Media Type for JavaScript Object Notation (JSON) Status of This Memo This memo provides information for the Internet community. JSON defines a small set of formatting rules for the portable representation of structured data. Converting from json to a java object or deserialization is a similar process. NET ! What I don't like is calling the non-generic DeserializeObject method and then having to deal with JToken wrappers. 1) convert object type to xmltype 2) convert xmltype to json Here's an example of that SQL> create or replace 2 type myobj as object 3 ( a int, 4 b varchar2(10) 5 ); 6 / Type created. xsd )and use Flat file decode action within the logic apps. Binding JSON string to anonyms type. Sometime it can be really annoying having to create POCO class every time you need to deserialize JSON value passed from client side in ASP. This sample converts LINQ to JSON objects to. 2) Set up options: parse numbers, transpose your data, or output an object instead of an array. Just select your file, pick a format to convert to and away you go. Trainer myTrainer = JsonConvert. parser will always convert it for me. Return the result of converting a JSON-derived JavaScript value to an Infra value, given jsValue. Free Online JSON to JSON Schema Converter. JSON Dates are not dates – they are Strings. This is a good and handy tutorial to udnerstand mapper functions and use them. Rate this: However, the question, in it essence, makes sense; it is about deserialization of JSON in. Note: Many of the JSON processing functions described in Section 9. 2, “Functions That Create JSON Values”) as well as by casting values of other types to the JSON type using CAST(value AS JSON) (see Converting between JSON and non-JSON values). Otherwise, for any value other than a number, a Boolean, or a null value, the text representation will be used, escaped and quoted so that it is legal JSON. json exposes an API familiar to users of the standard library marshal and pickle modules. Unable to cast object of type Newtonsoft. All other types we simply convert to a string (5); a further improvement could be to convert any type (say by using toJson), but this suffices to make our test pass and JSON requests work in practice. For this example we consider java objects of non generic type only. JArray to a list of specific object type Convert Newtonsoft. JavaScript. Most often we want to convert JSON files to a spatial format, such as KML. This makes the programming environment rather unfriendly to Python users who live and work in non-Latin-1 locales such as many of the Asian countries. The string keys in the JSON are matched to the field names in the structs. DBNull' to type 'System. It is easy for machines to parse and generate. NET template files", "$schema": "http://json-schema. Whereas strings in JSON always are enclosed in quotation marks, this is only necessary in Bracmat if a string contains operator characters or starts with flag characters. This tool uses the mcrypt_encrypt() function in PHP, so for more infos about the parameters used check the manual. To import, paste in your JSON. If you select JSON, output is like this. Many websites which offer API's, which will return data in JSON format. This will safely convert number values to text strings instead of converting to scientific notation or rounding. A map (also referred to as an associative array) is a data type with arbitrary key/value pairs that use the keys to access the corresponding values. For example if your flow could receive either JSON or an Object, the JSON node can be configured to ensure the property is an Object. NET objects into their JSON equivalent text and back again by mapping the. Auth0 is the solution you need for web, mobile, IoT, and internal applications. Convert JSON to Go struct This tool instantly converts JSON into a Go type definition. Open Complex Type. Hello world -->. Saving the design:type is critical since Typescript will remove all type information in a process known as type erasure. NET September 19, 2015 | C# Ever had problem with JSON data sometimes array and sometimes object that will cause the deserialization process to fail?. It is described as in RFC 4627 standard. org provides a library that can be used for this conversion process in just one line of code. I am able to get the HTTP response. normal Oracle tables) and on the fly generate JSON objects? More and more vendors are using REST based apis that process JSON (a key one for us is Oracle Sales Cloud) but. json | ConvertFrom-Json. The Play JSON API provides implicit Writes for most basic types, such as Int, Double, String, and Boolean. A note of caution: If you are wondering why json_encode() encodes your PHP array as a JSON object instead of a JSON array, you might want to double check your array keys because json_encode() assumes that you array is an object if your keys are not sequential. The JSON serializer is a good choice when the JSON you are reading or writing maps closely to a. Converting a Java object (a process known as serialization) to various forms such as XML, JSON, or a byte array and back into java objects is a very common requirement. JValue' to type 'System. 2, "Functions That Create JSON Values") as well as by casting values of other types to the JSON type using CAST(value AS JSON) (see Converting between JSON and non-JSON values). Uses the sample XML document to infer an XML schema (XSD). The tool is a Json to Java Bean generator. The most current versions of Word allow you to save a Word document in several XML and HTML formats. Put JSON in the text area below, click the "Pretty Print JSON" button, and see pretty printed JSON. Converting a Java object (a process known as serialization) to various forms such as XML, JSON, or a byte array and back into java objects is a very common requirement. JSON from Relational Data With all the new JSON Features, is there a way to take queries over relational data (ie. The output will display below the Convert button. Load form URL, Download, Save and Share. Use this tool to convert JSON into CSV (Comma Separated Values) or Excel. Load JSON, get CSV. Controller method Now get two list in ajax response. This online tool allows you to convert an XML file into a JSON file. This functionality depends on a converter of type Writes[T] which can convert a T to a JsValue. JSON Null Example shows how to represent Null values in JSON. Our online converter of JavaScript Object Notation format to GPS Exchange Format format (JSON to GPX) is fast and easy to use tool for both individual and batch conversions. You can use this approach to directly load JSON objects received via REST service without need to transform JSON to object model, set values as parameters in SQL command etc. {"type": "Feature", "geometry": {"type": "Point", "coordinates": [125. Includes epoch explanation and conversion syntax in various programming languages. Implementing a Type Converter. Hi, there! In the past few posts, I’ve covered some of the new features in Active Directory Federation Services (ADFS) on Windows Server 2012 R2. Most mutators, however, need to be accessed through specific sub-classes (such as ObjectNode and ArrayNode ). The json module provides the %* operator which is used to create JSON objects. Check out unsupportedTypeEncoder() in the new version I just posted. see here http://www. JSON data that is not stored textually, that is, as characters, never undergoes character-set conversion: there are no characters to convert. Converting ArcGIS JSON to GeoJSONThere in pure Browser. What is JSON? JSON Example with all data types. lines: bool, default False. What can you do with JSON TO JAVA CONVERTER ? This tool will help you to convert your JSON String/Data to JAVA Class Object ; To Save and Share this code, use Save and Share button. PostGIS is a spatial database extender for PostgreSQL object-relational database. Load form URL, Download, Save and Share. DeserializeObject(sJsonText); Now I need to convert deserialize JSON text to a specific type knowing only the name of the type. (Inherited from Object). { "title": "JSON schema. Boolean, Number, and String objects are converted to the corresponding primitive values during stringification, in accord with the traditional conversion semantics. Convert String to JSON Object using Javascript is an essential task if you are working heavily on JavaScript-based applications. JSON-LD is designed around the concept of a "context" to provide additional mappings from JSON to an RDF model. Your data is never sent to our servers. Development releases are a snapshot of our work in progress, primarily focused on allowing Jira users to see the new features in advance and provide us with some useful feedback. This is a good and handy tutorial to udnerstand mapper functions and use them. There are two ways that relational results can be converted into JSON, namely, the AUTO and PATH options. Toggle navigation Xml2CSharp. Just select your file, pick a format to convert to and away you go. So for example List. 1) TERRAFORMER Note: use in node. For column attr_2, the value is JSON array string. The following example converts a string to a JSON array. About MyGeodata Converter. org Category: Informational July 2006 The application/json Media Type for JavaScript Object Notation (JSON) Status of This Memo This memo provides information for the Internet community. Published Fri, Sep 18, 2015 by DSK. Just like creating any other table field using the appropriate data type named method, we have created a JSON column using the json method with the name attributes. I can now add every single list as a new query and get. The PowerShell cmdlets ConvertFrom-Json and ConvertTo-Json enable you to read a raw JavaScript Object Notation (JSON) string and convert it to a nice PowerShell object. txt configuration file to specify the SELECT list expression for your table, for example:. parse() method parses a JSON string, constructing the JavaScript value or object described by the string. import json. IConvertible? how to convert Newtonsoft. Type the following and run the program. You can also pipe an object to ConvertTo-Json. Best Online JSON to Excel Converter: Online JSON data converter tool to Excel. Nuget provides a plug-in called JSON. The JsonSerializer converts. You can do this by using the TypeToken class shown below. NET type objects into JSON-encoded data and then deserialize data in the JSON format back into instances of. For column attr_2, the value is JSON array string. To get that type, all we need to do is genericize this class and pass the item type as a Type Parameter. writeValueAsString() method to convert pojo to JSON //Simple POJO Employee emp = new Employee(1. So our next example shows how to fetch some JSON data, allowing us to press a button to show random cat GIFs. TypeNameHandling setting to include type information when serializing JSON and read type information so that the create types are created when deserializing JSON. The FAQ Page Schema Generator is one of my new JSON-LD Schema Generators that can help you quickly create the required structured data for your content to be eligible for display as a rich result in Google search. Does anyone know how to achieve this in C#? Answers: Serializing data structures containing only numeric or boolean values is fairly straightforward. It will also clean up your JSON and show a data viewer to assist you while you are developing. In JSON, values must be one of the following data types: a string; a number; an object (JSON object) an array; a boolean; null. Table of Contents 1. String` 10 answers In my database I have 6 columns, all of them allow null values. Open Complex Type. For column attr_2, the value is JSON array string. This example provides a typical minimum you are likely to see in JSON Schema. CONVERT_FROM converts from complex types, including HBase arrays, JSON and Parquet arrays and maps to an SQL data type. The JSON-Java library is also known as org. Actions: TXT to PDF - Convert file now View other document file. Use Load Data button to upload file. This way, you can directly send single JSON text file and load it into table. When importing we reorder and rewrite the JSON, which means it's not going to look the same on the other side. None of the XML to JSON converters (SAP’s, Advantco’s or mine) will check the field type from the XML definition. Often APIs will have actions where one of the parameters can be either a single object or an array of objects, in order to correctly serialize objects to JSON which can be accepted by the API a custom JsonConverter is needed. JSON data that is not stored textually, that is, as characters, never undergoes character-set conversion: there are no characters to convert. 1) convert object type to xmltype 2) convert xmltype to json Here's an example of that SQL> create or replace 2 type myobj as object 3 ( a int, 4 b varchar2(10) 5 ); 6 / Type created. gma file and a. generate TypeScript interfaces from json json2ts. Adding items to a JSON object. We start first by converting to simple POJO then we'll also show you how you can do the same for Collections Object. DTM Text to JSON Converter is another CSV to JSON converter for Windows. I published an article a couple of weeks ago that covers the subject of "Complex Deserialization of Objects from JSON", also including Transformations, in great detail using real-life examples from Etsy, Flickr, MovieDB, Google Drive, & Twitter live web APIs. 2- made JSON:onEncodeError() interactive, as is JSON:onDecodeError(); or 3- both of the above. string 1,,string n. com website for that. labels Contains the labels in different languages, see Labels, Descriptions and Aliases below. Converting Between XML and JSON. The only data type that is somewhat the same in JSON/JavaScript and Bracmat is the string, but there is a slight difference in the representation of strings in code. jar file to the environment variable CLASSPATH. It defines a default mapping algorithm for converting existing Java classes to JSON, while enabling developers to customize the mapping process through the use of Java annotations. CONVERT_FROM converts from complex types, including HBase arrays, JSON and Parquet arrays and maps to an SQL data type. However, because you can’t be sure of the structure or values of JSON your app receives, it can be challenging to deserialize model objects correctly. Firstly we create two TextView ‘s in our XML file and then in our Activity we parse the data using JSONObject methods and set it in the TextView ‘s. Convert the request into an object, using the PHP function json_decode(). The type of the return value result is Map. JSON (JavaScript Object Notation) is a lightweight data-interchange format. Development. org provides a library that can be used for this conversion process in just one line of code. Visually explore and analyze data—on-premises and in the cloud—all in one view. Convert JSON to and from XML,HTML,SQL,YAML,Fixed at ConvertJSON. In the expanded document form, such JSON will become the value of @value within a value object having "@type": "@json". Initially it was made for JavaScript, but many other languages have libraries to handle it as well. A Computer Science portal for geeks. Supports JSON Schema Draft 3, Draft 4, Draft 6 and Draft 7. js tutorial , you will be able to upload an excel file on your application to a particular path, read the file and convert it into JSON data and then, obviously, you can do whatever you want with that programmatically sensible data. In Python it is simple to read data from csv file and export data to csv. Or you can go the other way and convert a PowerShell object into a JSON string. When deserializing JSON content with extraneous attributes into an Apex class, this method throws an exception. JSON (JavaScript Object Notation), specified by RFC 7159 (which obsoletes RFC 4627) and by ECMA-404, is a lightweight data interchange format inspired by JavaScript object literal syntax (although it is not a strict subset of JavaScript 1). 2, "Functions That Create JSON Values") as well as by casting values of other types to the JSON type using CAST(value AS JSON) (see Converting between JSON and non-JSON values). MongoDB Compatibility¶. Click "Start a New Convert" at task dialog. You can use the Foundation framework’s JSONSerialization class to convert JSON into Swift data types like Dictionary, Array, String, Number, and Bool. On Java Platform, JavaBeans are classes that encapsulate many objects into a single object (the bean). JSON Formatter & Editor Online is a free awesome web-based tool to view, edit JSON document. 1) Copy/paste or upload your Excel data (CSV or TSV) to convert it to JSON. JSON to Excel converter is a fast converter which helps you convert your JSON data to csv. DBConvert JSON to SQL support conversion of data from JSON files to the most popular databases like MySQL, MS SQL Server, Oracle, MS Access and MS FoxPro. Use this tool to convert JSON into CSV (Comma Separated Values) for Excel Upload your JSON text, file or URL into this online converter (Press the cog button on the right for advanced settings) Download the resulting CSV file when prompted; Open your CSV file in Excel or Open Office. org's database). While JSON is newer technology, it’s still good to know XML. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. 2) Set up options: parse numbers, transpose your data, or output an object instead of an array. Strange thing is that the note and message are created correctly inside HelpScou. This example uses MOXy along with JAXB to marshal Java object to JSON. An Online JSON Editor to help you create, view and edit your json with the help of a treeview to visualize your data. NET is a popular high-performance JSON framework for. JSON is relatively new as it was first described by Douglas Crockford in July 2006 in his IETF Request for Comments “The application/json Media Type for JavaScript Object Notation”[2]. It's simple, flexible and powerful enough satisfy serialization, de-serialization requirements including complex bean types and collections. Adding items to a JSON object. Google Gson for converting Java objects to JSON and JSON to Java Objects. Also, this only works for database engines that support the JSON data type. Supports every eclipse flavor (JavaEE, CDT, RCP, you name it!) Supports eclipse version 3. Single or array JSON converter. json file free download - Json Into Csv for Windows 10, Json Into Xml for Windows 10, JSON To CSV Converter Software, and many more programs. The website JSON. So for example List. Extensible Markup Language is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. (Inherited from Object). JavaScript / HTML5 charts and maps data-viz libraries for web sites and applications. This discussion uses JSON in monotype to indicate specifically the JSON data type and " JSON " in regular font to indicate JSON data in general. mobile devices, sensors, Azure Stream Analytics, or Application Insight), you can directly send data to Azure SQL Database without any additional layer. insert the values the call the xhrPost request. Easy epoch/Unix timestamp converter for computer programmers. Nuget provides a plug-in called JSON. Unlike pickle, JSON has the benefit of having implementations in many languages (especially JavaScript), making it suitable for inter-application communication. Let's look at an example. This chapter shows how the JSON serialization format can be used for transferring data from a simple web service. You may also be having trouble opening old files because the format is no longer supported, sometimes converting these files can fix that problem. Once JSON File edit is completes, Download the file using Download button. Operating on untyped JSON values Any valid JSON data can be manipulated in the following recursive enum representation. IConvertible?. JSON is really easy to use and it really boosts performances since it is a lot lighter than XML and SOAP. It is easy for machines to parse and generate. All attributes in the JSON string must be present in the specified type. TypeScript in Visual Studio Code. The syntax is designed to easily integrate into deployed systems that already use JSON, and provides a smooth upgrade path from JSON to JSON-LD. As you type in one of the text boxes above, the other boxes are converted on the fly. It is easy for humans to read and write. Or you can go the other way and convert a PowerShell object into a JSON string. JavaScript / HTML5 charts and maps data-viz libraries for web sites and applications. Formats - We support 1200+ file formats, more than any other converter. ObjGen uses a simple shorthand syntax to generate rich and complex JSON data. While you are converting JSON to XML ,output from convertor needs to be valid XML. XmlDocumentWrapper When you use XML Source and check Output as Raw Option without selecting Convert to. Is there a way to not convert a json field’s value from being converted to string. When using JSON, data might not be represented using camelCase notation and hence one cannot simply typecast a JSON object directly onto a TypeScript "typed" object. Convert List to Json result, return type as JsonResult. CONVERT_FROM converts from complex types, including HBase arrays, JSON and Parquet arrays and maps to an SQL data type. Convert XML or JSON into a class by using visual studio is as easy as just copy and two clicks, never matter how big or how complicated is our XML or JSON. org maintains an extensive list of JSON libraries and they are categorized in programming languages. Working with JSON data in Java can be easy, but – like most anything in Java – there are a lot of options and libraries we can chose from. You can do this by using the TypeToken class shown below. The JSON Editor is a simple plugin for the Eclipse IDE that. It is easy for humans to read and write. How to convert and bind JSON string in to asp. With Total XML Converter you can extract images from XML files. Convert XML to JSON using C# To convert a given XML string to JSON, simply call XmlToJSON() function as below. It can't be called or constructed, and aside from its two method properties, it has no interesting functionality of its own. JSON Editor Online is a web-based tool to view, edit, and format JSON. How to Convert CSV to JSON in Java - DZone Java. getClass()); // Fails to deserialize foo. As many of you know already Gson is a great Java library that can be used to convert Java Objects into their JSON representation. While programming we may come across a situation where we have to convert json to xml or vice versa. Created by developers for developers. parse on the same, How two return multiple list in Json. It is based on a subset of the JavaScript Programming Language, Standard ECMA-262 3rd Edition - December 1999. MongoDB Compatibility¶. 16 Converting Objects to and from JSON Documents This chapter describes how Oracle TopLink supports the ability to convert objects to and from JSON (JavaScript Object Notation). We are going to write the code which will open the connection and read all the records into DataReader and load records by using DataTable load method. Converting Object to JSON and JSON to C# Objects. Converter also supports more than 90 others vector and rasters GIS/CAD formats and more than 3 000 coordinate reference systems. The appliance provides a stylesheet that you can use to convert JSONx to JSON. JSON is a data-interchange format with syntax rules that are stricter than those of JavaScript's object literal notation. Right Click in response pipeline -> Insert Into -> nXSD translate. How to: Deserialization of nested JSON. trait DefaultReads extends AnyRef. Cast functions and operators enable conversion of values from one data type to another. Almost any application that can handle text can open a. The existing variable (and its children) is destroyed. The first converts the json into an array of NavItems while the second deserializes a java generic type by specifying the correct parameterized type.