Code generation
JSON to Java
Generate Java model classes from JSON locally.
What is JSON to Java?
Infer simple Java model classes from a JSON example in your browser. Nested objects become their own classes, arrays become typed lists, and field types are guessed from the sample values — so you get a starting point for POJOs without hand-typing boilerplate.
How to use JSON to Java
- Paste or type your input into the editor.
- Use the tool action to process your data in the browser.
- Review the output, then copy or download it if needed.
Key features
- Private browser-based processing.
- No account or login required.
- Works without uploading your data.
- Fast results for common developer tasks.
Frequently asked questions
Is JSON uploaded?
No. Generation runs in your browser.
How are nested objects handled?
Each nested object in your JSON example becomes its own Java class, referenced as a field on the parent class.
What Java types are used?
Types are inferred from the sample values: strings, numbers, booleans, lists, and nested object classes. Review and adjust types for edge cases your sample doesn't cover.