Gson is a Java library that can be used to convert Java Objects into their JSON representation.

Overview

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 is an open-source project hosted at   http://code.google.com/p/google-gson .

Gson can work with arbitrary Java objects including pre-existing objects that you do not have source-code of.

Goals for Gson

• Provide easy to use mechanisms like toString() and constructor (factory method) to convert Java to JSON and vice-versa
• Allow pre-existing unmodifiable objects to be converted to and from JSON
• Allow custom representations for objects
• Support arbitrarily complex object
• Generate compact and readability JSON output