JSONForgeAdvanced Workspace
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Online JSON to Java Class & Record Converter

Convert JSON payloads into clean Java 16+ Records or standard POJOs with Jackson annotations — 100% client-side.

⛶ Launch Fullscreen IDE Use Embedded Editor ↓
Instant Live Conversion (Local)
Input Data31 lines • 647 chars
Converted Output32 lines • 1163 chars

How It Works

Fast, secure, browser-native JSON processing in 3 simple steps

1

Paste JSON Payload

Paste your sample JSON API response or database document into the input editor.

2

Choose Record or POJO

Select modern Java 16+ Record (recommended for Spring Boot 3) or Standard POJO (with getters/setters).

3

Copy or Download .java

Copy the generated Java source code or download UserSession.java directly into your IDE.

Eliminate Java Boilerplate for Enterprise Spring Boot & Microservices

In enterprise Java architectures powered by Spring Boot, Quarkus, or Micronaut, Data Transfer Objects (DTOs) form the backbone of API communication. Manually typing Java POJO classes with constructor methods, getters, setters, and @JsonProperty annotations for complex JSON structures is slow and monotonous.

JSONForge's JSON to Java Converter instantly transforms raw JSON payloads into production-ready Java source code. It breaks down nested JSON objects into modular child classes, maps arrays to List<T>, attaches Jackson annotations for robust JSON serialization, and supports both modern Java 16+ Records and traditional JavaBeans POJOs.

☕ Modern Java 16+ Records

Produce concise, immutable Record definitions compatible with Spring Boot 3, Micronaut, and modern Jackson deserializers.

🏷️ Jackson @JsonProperty

Each field is mapped with its exact JSON property name, ensuring smooth deserialization regardless of naming conventions.

🔒 Private & Enterprise Safe

All code generation happens locally in your browser sandbox. Protect confidential enterprise customer records and production schemas.

How to Use the Generated Models in Spring Boot

The generated Java source code is ready to drop directly into your Spring Boot microservices. Here is an example of handling incoming requests with the generated model:

Example: Spring Boot RestController with Jackson Record

package com.example.controllers;

import com.example.models.Root;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/api/v1/orders")
public class OrderController {

    @PostMapping("/process")
    public ResponseEntity<String> processOrder(@RequestBody Root order) {
        System.out.println("Processing order ID: " + order.orderId());
        System.out.println("Customer email: " + order.customerEmail());
        System.out.println("Line items count: " + order.lineItems().size());
        
        return ResponseEntity.ok("Order processed successfully");
    }
}

Frequently Asked Questions

Everything you need to know about JSON validation, formatting, and privacy

Java Records (standardized in Java 16) provide a compact syntax for declaring immutable data carrier classes. They automatically generate constructors, equals(), hashCode(), and toString() methods without boilerplate or Lombok annotations, making them ideal for Spring Boot 3+ and Jackson deserialization.

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