JSON to Java

Convert JSON to Java POJO.

This tool is designed to provide a seamless experience for developers by handling complex operations directly in your browser with maximum speed and security.

100% Private

Instant Results

Customizable

Offline Ready

Dev-Friendly

Easy Export

It converts JSON data into Java classes, following the POJO (Plain Old Java Object) pattern. It intelligently identifies types and structure, creating the necessary boilerplate code for working with JSON in Java applications. The tool can also generate annotations for popular libraries like Jackson or Gson, making serialization and deserialization a breeze. It is perfect for Android developers and backend engineers who need to quickly integrate external APIs into their Java-based systems, ensuring that the data models are always perfectly synced with the incoming JSON payloads.

Input your JSON to generate Java Plain Old Java Objects (POJOs). It includes getters, setters, and Jackson/Gson annotations if requested.

Java is a strictly typed language, and manually creating POJOs for complex JSON structures can be incredibly time-consuming and tedious. This tool automates the creation of these classes, including all necessary fields and types, which significantly speeds up development and reduces the risk of mapping errors.

Example Input

{
  "id": 1,
  "name": "John Doe",
  "email": "john@example.com",
  "isActive": true,
  "tags": ["admin", "dev"],
  "profile": {
    "bio": "Software Engineer",
    "skills": ["Go", "React", "TypeScript"]
  }
}

Example Output

public class User {
    private int id;
    private String name;
    private String email;
    private boolean isActive;
    // Getters and Setters
}

Package Names

Fix: The tool generates the class structure. You'll need to add the appropriate `package` declaration at the top.

Does it support Lombok?

Yes, you can choose to generate Lombok annotations like @Data to reduce boilerplate even further.

How to Convert JSON to Dart Classes for Flutter – Complete In-Depth Guide (2026)

How to convert JSON to Dart classes for Flutter in 2026. In-depth guide covering Dart model best practices, null safety, immutable classes, code generation with json_serializable & freezed, Flutter integration with Riverpod, and real-world architecture tips from a Principal Software Engineer with 15+ years experience.

What is JSON? How to Format, Validate & Use It (Complete Guide 2026)

What is JSON? How to Format, Validate & Use It (Complete Guide 2026). In-depth explanation of JSON syntax, real-world use cases, formatting best practices, common mistakes, advantages, disadvantages, and expert tips from a Principal Software Engineer with 15+ years experience.