JSON Processing implementation

This library is simply a fork of the original JSON for Java library written by Douglas Crockford for easy use inside Processing IDE. See the original README below.

Since Processing 2.0 beta 8

Since the beta release (8) of Processing 2.0 (February 24) JSON is part of the core libraries; to avoid any ambiguity problems you should upgrade to the latest version of this library.

Installation in Processing

1. Download the latest (0.1.8) version here
2. Extract the zip-file into your /sketchbook/libraries/ folder.
3. Restart Processing IDE

You can still find the OLD versions here

Getting started with JSON in Processing.

Creating a JSON with primitive members

/**
 * Creating a JSON with primitive members
 */

JSON obj = JSON.createObject();
obj.setInt("myint", 5);
obj.setFloat("myfloat", 5.5);

println( obj );

Creating a JSON with complex members

/**
 * Creating a JSON with complex members
 */
JSON myfirstmember = JSON.createObject();
myfirstmember.setInt("myint", 5);

JSON mysecondmember = JSON.createObject();
mysecondmember.setFloat("myfloat", 5.5);

JSON obj = JSON.createObject();
obj.setJSON("myobj", myfirstmember);
obj.setJSON("myobj2", mysecondmember);

println( obj );

Creating a JSON from a json-formatted String.

/**
 * Creating a JSON from a json-formatted String.
 */
String json_formatted_string = "{\"myint\":5,\"myfloat\":5.5}";
JSON obj = JSON.parse(json_formatted_string);
println( obj );

Creating a JSON array of primitives

/**
 * Creating a JSON array of primitives
 */
JSON arr = JSON.createArray();
arr.append(5);
arr.append(5.5);
arr.append('a');

println(arr);

Creating a JSON array of objects

/**
 * Creating a JSON array of objects
 */
JSON first = JSON.createObject();
first.setInt("val", 5);

JSON sec = JSON.createObject();
sec.setFloat("val", 5.5);

JSON third = JSON.createObject();
third.setString("val", "a");

JSON arr = JSON.createArray();
arr.append(first);
arr.append(sec);
arr.append(third);

println(arr);

Parson JSON from websource

/**
 * Creating a JSON array of objects
 */
JSON first = JSON.createObject();
first.setInt("val", 5);

JSON sec = JSON.createObject();
sec.setFloat("val", 5.5);

JSON third = JSON.createObject();
third.setString("val", "a");

JSON arr = JSON.createArray();
arr.append(first);
arr.append(sec);
arr.append(third);

println(arr);

Original README

JSON in Java [package org.json]

Douglas Crockford [email protected]

2011-02-02

JSON is a light-weight, language independent, data interchange format. See http://www.JSON.org/

The files in this package implement JSON encoders/decoders in Java. It also includes the capability to convert between JSON and XML, HTTP headers, Cookies, and CDL.

This is a reference implementation. There is a large number of JSON packages in Java. Perhaps someday the Java community will standardize on one. Until then, choose carefully.

The license includes this restriction: "The software shall be used for good, not evil." If your conscience cannot live with that, then choose a different package.

The package compiles on Java 1.2 thru Java 1.4.

JSONObject.java: The JSONObject can parse text from a String or a JSONTokener to produce a map-like object. The object provides methods for manipulating its contents, and for producing a JSON compliant object serialization.

JSONArray.java: The JSONObject can parse text from a String or a JSONTokener to produce a vector-like object. The object provides methods for manipulating its contents, and for producing a JSON compliant array serialization.

JSONTokener.java: The JSONTokener breaks a text into a sequence of individual tokens. It can be constructed from a String, Reader, or InputStream.

JSONException.java: The JSONException is the standard exception type thrown by this package.

JSONString.java: The JSONString interface requires a toJSONString method, allowing an object to provide its own serialization.

JSONStringer.java: The JSONStringer provides a convenient facility for building JSON strings.

JSONWriter.java: The JSONWriter provides a convenient facility for building JSON text through a writer.

CDL.java: CDL provides support for converting between JSON and comma delimited lists.

Cookie.java: Cookie provides support for converting between JSON and cookies.

CookieList.java: CookieList provides support for converting between JSON and cookie lists.

HTTP.java: HTTP provides support for converting between JSON and HTTP headers.

HTTPTokener.java: HTTPTokener extends JSONTokener for parsing HTTP headers.

XML.java: XML provides support for converting between JSON and XML.

JSONML.java: JSONML provides support for converting between JSONML and XML.

XMLTokener.java: XMLTokener extends JSONTokener for parsing XML text.