Data to Class tools

Data to Class

Turn JSON into typed definitions you can drop into a project—starting with Java records generated locally in your browser.

Generate typed code from sample JSON so you can paste definitions into a Java project—useful for DTOs, records, and nested structures.

More generators may appear here over time; JSON to Java is available today with local, browser-side generation.

JSON to Java

Emit Java records with fields inferred from strings, numbers, booleans, objects, and arrays.
Your JSON never leaves the browser—we do not send it to a server to generate Java.
Copy the generated source in one click for your IDE or merge request.

Available generators

From sample payload to compilable-looking records—without leaving the tab.

Paste a JSON object, name the root record, and copy Java 16+ records—no upload, no account.

Emit Java records with fields inferred from strings, numbers, booleans, objects, and arrays.
Nest record types for nested JSON objects; arrays become List types with imports when needed.
Your JSON never leaves the browser—we do not send it to a server to generate Java.