LangStop

JSON Code Generator

Paste your JSON on the left, select a target language and type name, and instantly generate usable code on the right.

Generate java Types

Fast — configurable — production-ready
Rendererjava
Collection type
Date/time provider
Tip: tweak renderer options to match your code style and project conventions.
DocsExamples
Head first System Design
Head first System Design
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Cracking PM Interview
Cracking PM Interview
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Designing Data-Intensive Applications
Designing Data-Intensive Applications
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Cracking the coding interview
Cracking the coding interview
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System Design Interview
System Design Interview
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JSON Code Generator

Instantly convert JSON into clean, strongly typed code models for JavaScript, Java, C#, Python, Ruby, C++, and Go. Save time, reduce errors, and streamline your development workflow.

Multi-Language Support

Generate code for JavaScript, Java, C#, Python, Ruby, C++, and Go — all from one JSON input.

Strongly Typed Models

Get clean class definitions, interfaces, and type-safe structures ready for production.

Developer-Friendly

Reduce repetitive manual writing and focus on building features that matter.

Reliable Output

Code is formatted, consistent, and designed to meet industry best practices.

Generate Code from JSON in Seconds

Paste your JSON, choose a target language, and instantly receive clean, structured code models.

Frequently Asked Questions

Does this tool support nested JSON?

Yes — it automatically handles nested arrays, objects, and complex hierarchical structures.

Is the generated code production-ready?

Absolutely. The output follows standard naming conventions and strong typing practices.

Can I customize the type/class names?

Yes — you can specify a custom type name to keep your models consistent across projects.

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