JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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JSON in Java Lanugage: Java API for JSON Processing

JSON (JavaScript Object Notation) is a lightweight, text-based, language-independent data exchange format that is easy for humans and machines to read and write. JSON can represent two structured types: objects and arrays. An object is an unordered collection of zero or more name/value pairs. An array is an ordered sequence of zero or more values. The values can be strings, numbers, booleans, null, and these two structured types.

The Java API for JSON Processing (JSR 353) provides portable APIs to parse, generate, transform, and query JSON using object model and streaming APIs.

Jackson - Java JSON Processor

One of the API is Jackson, It provides JSON parser/JSON generator as foundational building block. Click below link to see simple JSON examples using Jackson API.

Click here for examples: Jackson - Java JSON Processor

Java API for JSON Processing (JSR 353)

Java API for JSON Processing (JSR 353) provides an API to parse, transform, and query JSON data using the object model or the streaming mode.

Click here for examples: Java API for JSON Processing - javax.json package

Google Gson - Java json processor

Gson is a Java library that can be used to convert Java Objects into their JSON representation. It can also be used to convert a JSON string to an equivalent Java object. Gson can work with arbitrary Java objects including pre-existing objects that you do not have source-code of.

Click here for examples: Google Gson - Java json processor

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Knowledge Centre
Class, Constructor and Primitive data types
Class is a template for multiple objects with similar features and it is a blue print for objects. It defines a type of object according to the data the object can hold and the operations the object can perform. Constructor is a special kind of method that determines how an object is initialized when created. Primitive data types are 8 types and they are: byte, short, int, long, float, double, boolean, char.
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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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