Does it handle nested JSON objects and arrays?

Yes, nested structures generate their own separate classes, with arrays typed based on their element type.

What if a field's type is ambiguous from the sample data?

It infers a reasonable type from the sample provided — review and adjust the generated class for edge cases where the sample doesn't fully represent the real data's variability.

Which languages are supported?

Java and Python, generating idiomatic class definitions for each.

Does JSON to Java/Python upload my files to a server?

No. JSON to Java/Python runs entirely in your browser using on-device processing, your files never leave your device.

JSON to Java/Python

Generate a Java or Python class from a JSON object.

Runs in your browser

Language

Class name

JSON input

About this tool

Writing a Java or Python class by hand to match a JSON object's shape is tedious and easy to get subtly wrong, especially for nested objects and arrays with specific type mappings. This tool generates a Java or Python class directly from a sample JSON object, giving you accurate starting code instead of hand-transcribing the shape of a JSON response.

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