JSON to Java Class

Generate Java classes with nested static classes and List fields from JSON.

This tool runs entirely in your browser. Your input is never uploaded.

Root class

JSON

Java class

Paste some JSON first.

What is this tool?

Generate Java classes from JSON. Objects become nested public class definitions, arrays become List<T>, numbers become long or double, and booleans become boolean. Non-identifier keys and Java keywords are renamed safely.

How to use it

Paste JSON.
Optionally change the root class name (default Root).
Copy the generated classes or download them as Root.java.

Privacy

Conversion runs entirely in your browser.

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