Skip to main content

Eclipse Parsson

Eclipse Parsson is an open-source implementation of the Jakarta JSON Processing (JSON-P) specification for parsing, generating, and manipulating JSON data in Java (application development / data serialization).

  • Implements the Jakarta JSON Processing (JSON-P) Application Programming Interface (API) for JSON parsing and generation (application development / data serialization).
  • Provides streaming and object-model processing of JSON structures via Jakarta JSON-P interfaces (application development).
  • Supplies a compatible provider for Jakarta EE and other Java runtimes that use JSON-P (enterprise Java platform integration).
  • Distributed under Eclipse Foundation governance and licensing for enterprise and open-source use (open-source governance / compliance).
  • Integrates with other Eclipse EE4J and Jakarta EE components that depend on JSON-P for JSON handling (enterprise application platforms).

More About Eclipse Parsson

Eclipse Parsson is the Jakarta JSON Processing reference implementation project within the Eclipse EE4J ecosystem, focused on providing a compliant Java implementation of the Jakarta JSON Processing (JSON-P) specification for working with JSON data. JSON-P defines a standard API for parsing, generating, and transforming JSON in Java, and Parsson supplies the concrete provider that libraries, frameworks, and Jakarta EE-compatible runtimes can use at deployment and runtime. This places Parsson in the category of JSON processing libraries and Jakarta EE specification implementations (application development / enterprise Java).

The project implements the core Jakarta JSON Processing packages that expose a streaming API and an object-model API for JSON. Through these APIs, developers can read JSON from input streams, writers, and strings, traverse JSON arrays and objects, and construct JSON documents programmatically (application development / data serialization). The streaming model allows processing JSON as a sequence of events, which is suited to large payloads or pipeline-style processing, while the object model provides an in-memory representation of JSON values, objects, and arrays that can be inspected and modified before output.

In enterprise environments, Eclipse Parsson is used as the JSON-P provider plugged into Jakarta EE application servers and other Java platforms that support Jakarta JSON Processing (enterprise Java platforms). When an application calls the standard Jakarta JSON Processing APIs, the runtime discovers and delegates to an installed provider such as Parsson, making JSON parsing and generation behavior consistent with the specification. This supports interoperability across Jakarta EE implementations and simplifies application portability, since applications target the API rather than a proprietary JSON library.

Parsson is part of the Eclipse EE4J project family under the Eclipse Foundation, which maintains open governance, licensing, and release processes for Jakarta EE-related components (open-source governance / compliance). Its alignment with the Jakarta JSON Processing specification means it is positioned as a reference-compatible implementation within the Jakarta EE stack and is relevant wherever JSON-P is required by other Jakarta specifications or by enterprise frameworks that standardize on Jakarta APIs.

From an architectural and ecosystem perspective, Eclipse Parsson fits into enterprise Java deployments as the JSON processing layer that underpins RESTful services, configuration handling, and integration workflows that use JSON through Jakarta JSON Processing (application integration / APIs). By supplying a specification-aligned implementation, it allows platform vendors and application teams to standardize JSON handling within Jakarta EE-based systems and other Java runtimes that adopt the same APIs.