# Simple JSON API Coming to Java

JDK's new built-in JSON API eliminates external library dependencies.

- **Source:** [Hacker News: Front Page](https://brifing.si/source/b07aa772-b1a0-4a76-aa18-719c6f9e2dde)
- **Published:** 2026-07-23
- **Topic:** [Software & Engineering](https://brifing.si/c/engineering)
- **Original article:** <https://openjdk.org/jeps/540>
- **On Brifing:** https://brifing.si/s/b27e3bb9-5b00-40a7-bb1c-6946f2f13399

## Simplified JSON Processing

The Java Platform introduces a standard API for processing RFC 8259 compliant JSON documents, removing dependency on external libraries. Basic JSON operations can now be performed with minimal code.

## Core Goals of JEP 540

The API aims to be small, simple, and easy to learn. It provides only the data types and operations required for strict RFC 8259 compliance, specifically designed for machine-to-machine communication.

## Easier JSON Exploration

The API facilitates exploration of unfamiliar JSON documents. Fast-failing methods with clear error messages enable developers to examine JSON structures more efficiently.

## JSON Support for JDK Itself

This API will allow the JDK to process JSON documents internally. JSON usage in configuration files will overcome limitations of the current property file format.

## JsonValue Interface

The API is organized around the JsonValue interface, with sub-interfaces for JSON's four primitive types (string, number, boolean, null) and two structures (object, array).

## Object and Array Operations

JsonObject and JsonArray interfaces provide optimized methods for working with JSON structures, enabling more readable access to data in JSON documents.

## Example Use Case

Simple tasks like calculating average temperature data from a U.S. National Weather Service REST API JSON response can now be accomplished with significantly less code.

## Comparison with External Libraries

Advanced features like data binding or streaming (found in Jackson or Gson) are out of scope. This is a minimalist solution optimized for basic JSON processing.

## Revolution in Configuration Files

Unlike JDK's current property file format, JSON support will enable representation of complex data structures (like arrays) in configuration files.

## Differences from JEP 198

This takes a different approach from the 2014 Light-Weight JSON API (JEP 198), redesigned considering current needs and the evolution of the Java Platform.

## Incubator Stage

The API is currently in incubator stage, open to feedback and subject to change in future releases. Developers can contribute to its maturation by sharing experiences.

## Contribution to Java Ecosystem

This feature is part of Java's adaptation to modern development needs. Enabling simple tasks to be solved with simple code is a significant step in enhancing Java's productivity.

## Sources covering this story

- https://openjdk.org/jeps/540 — 

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_Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._