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JSON in Java [package org.json]
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 1.6-1.8.
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 JSONArray 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.
JSONPointer.java: Implementation of
[JSON Pointer (RFC 6901)](https://tools.ietf.org/html/rfc6901). Supports
JSON Pointers both in the form of string representation and URI fragment
representation.
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.
Unit tests are maintained in a separate project. Contributing developers can test
JSON-java pull requests with the code in this project:
https://github.com/stleary/JSON-Java-unit-test
Numeric types in this package comply with ECMA-404: The JSON Data Interchange Format
(http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-404.pdf) and
RFC 7159: The JavaScript Object Notation (JSON) Data Interchange Format
(https://tools.ietf.org/html/rfc7159#section-6).
This package fully supports Integer, Long, and Double Java types. Partial support
for BigInteger and BigDecimal values in JSONObject and JSONArray objects is provided
in the form of get(), opt(), and put() API methods.
Although 1.6 compatibility is currently supported, it is not a project goal and may be
removed in some future release.
In compliance with RFC7159 page 10 section 9, the parser is more lax with what is valid
JSON than the Generator. For Example, the tab character (U+0009) is allowed when reading
JSON Text strings, but when output by the Generator, tab is properly converted to \t in
the string. Other instances may occur where reading invalid JSON text does not cause an
error to be generated. Malformed JSON Texts such as missing end " (quote) on strings or
invalid number formats (1.2e6.3) will cause errors as such documents can not be read
reliably.
Release history:
20171018 Checkpoint for recent commits.
20170516 Roll up recent commits.
20160810 Revert code that was breaking opt*() methods.
20160807 This release contains a bug in the JSONObject.opt*() and JSONArray.opt*() methods,
it is not recommended for use.
Java 1.6 compatability fixed, JSONArray.toList() and JSONObject.toMap(),
RFC4180 compatibility, JSONPointer, some exception fixes, optional XML type conversion.
Contains the latest code as of 7 Aug, 2016
20160212 Java 1.6 compatibility, OSGi bundle. Contains the latest code as of 12 Feb, 2016.
20151123 JSONObject and JSONArray initialization with generics. Contains the
latest code as of 23 Nov, 2015.
20150729 Checkpoint for Maven central repository release. Contains the latest code
as of 29 July, 2015.
JSON-java releases can be found by searching the Maven repository for groupId "org.json"
and artifactId "json". For example:
https://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22org.json%22%20AND%20a%3A%22json%22
