GeezerVison

The World Wide Web, restored to 800 pixels of glory.

GeezerVison is showing javaee.github.io — JSON Binding (JSON-B) - Home

Java API for JSON Binding

JSR 367 Specification

What is JSON-B?

JSON-B is a standard binding layer for converting Java objects to/from JSON messages. 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.

Consistent

Consistent with JAXB (Java API for XML Binding) and other Java EE and SE APIs where appropriate

Conventional

Define default mapping of Java classes and instances to JSON document counterparts

Customizable

Allow customization of the default mapping definition

Easy to Use

Default use of the APIs should not require prior knowledge of the JSON document format and specification

To serialize/deserialize a Java Object to/from JSON

The Java Class

public class Dog {
    public String name;
    public int age;
    public boolean bitable;
}

JSON-B API calls

public static void main(String[] args) {
// Create a dog instance
Dog dog = new Main.Dog();
dog.name = "Falco";
dog.age = 4;
dog.bitable = false;

// Create Jsonb and serialize
Jsonb jsonb = JsonbBuilder.create();
String result = jsonb.toJson(dog);

System.out.println(result);

// Deserialize back
dog = jsonb.fromJson("{\"name\":\"Falco\",\"age\":4,\"bitable\":false}", Dog.class);
}

The JSON representation

{
    "name": "Falco",
    "age": 4,
    "bitable": false
}

You are visitor 01402503 — GeezerVison does not store the pages you look up.
Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required.