JSON to Spring Boot DTO Converter | Free Online Tool with @Data, @Builder

⚡ Instant Generation

Paste JSON, get Lombok POJOs in milliseconds. No waiting, no API calls.

🔒 100% Private

All processing happens in your browser. Your JSON never touches our servers.

🎯 Lombok-Optimized

Generates @Data, @Builder, @NoArgsConstructor, and other Lombok annotations automatically.

📦 Spring Boot Ready

Perfect for REST API DTOs, configuration classes, and entity models.

Convert JSON to Spring Boot DTO

Output Format

Root Class Name

Input JSON

Field Selection Tree

Waiting for JSON…

Generated Code

How to Convert JSON to Java with Lombok: Step-by-Step

Step 1: Paste Your JSON

Copy your JSON response from an API, configuration file, or database query:

{
  "userId": 123,
  "username": "john_doe",
  "email": "john@example.com",
  "isActive": true,
  "roles": ["USER", "ADMIN"]
}

Step 2: Select Lombok Annotations

The tool automatically generates Lombok annotations. Common ones include:

@Data – Generates getters, setters, toString, equals, and hashCode
@Builder – Enables fluent builder pattern
@AllArgsConstructor – Creates constructor with all fields
@NoArgsConstructor – Creates default constructor (required for JPA)

Step 3: Get Your Lombok POJO

Instantly receive production-ready Java code:

import lombok.Data;
import java.util.List;

@Data
public class User {
    private Integer userId;
    private String username;
    private String email;
    private Boolean isActive;
    private List<String> roles;
}

Step 4: Add Lombok to Your Project

<!-- Maven -->
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.30</version>
    <scope>provided</scope>
</dependency>

Lombok vs Manual Java: The Difference

Feature	With Lombok	Manual Java	Lines Saved
Getters/Setters	✅ @Data (1 line)	❌ Manual (20+ lines)	~20 lines
Constructor	✅ @AllArgsConstructor	❌ Manual (5-10 lines)	~8 lines
Builder Pattern	✅ @Builder (1 line)	❌ Manual (30+ lines)	~35 lines
Total for 5-field class	~10 lines	~95 lines	~85 lines saved!

Frequently Asked Questions

Q: Do I need to install Lombok in my project?

A: Yes, you need to add Lombok as a dependency in your Maven or Gradle project. Also install the Lombok plugin in your IDE (IntelliJ IDEA, Eclipse, VS Code) for proper code completion.

Q: Is Lombok safe for production use?

A: Absolutely! Lombok is used by thousands of production applications including major enterprises. It’s been stable since 2009 and is actively maintained.

Q: Can I use Lombok with Spring Boot?

A: Yes! Lombok works perfectly with Spring Boot. In fact, many Spring Boot starter projects include Lombok by default. It’s especially useful for @ConfigurationProperties classes and DTOs.