Convert JSON to Java class definitions with auto type detection, Lombok support, and nested class generation
Format Converter
About This Tool
The JSON to Java Class converter generates Java class definitions from your JSON data. It accurately maps JSON types to Java types, handles nested classes and lists, and optionally generates Lombok @Data annotations. With real-time conversion and customizable root class names, it helps Java developers quickly create POJOs for API integration.
Key Features
- Automatic Java type mapping from JSON values
- Nested class generation for complex objects
- Optional Lombok @Data annotation support
- List and array type handling with proper generics
- Customizable root class name
- Real-time conversion with instant preview
Use Cases
- Generate Java POJOs from API JSON responses
- Create model classes for Spring Boot applications
- Convert JSON payloads into typed Java objects
- Bootstrap data models for REST API clients
- Quickly scaffold Java classes from sample JSON data
json
java
pojo
lombok
code-generation
Frequently Asked Questions
What is the JSON to Java Class converter?
The JSON to Java Class converter generates Java class definitions from your JSON data. It accurately maps JSON types to Java types, handles nested classes and lists, and optionally generates Lombok annotations.
Does it support Lombok annotations?
Yes, you can enable Lombok annotations using the toggle option. When enabled, the tool generates @Data annotations instead of explicit getters and setters, making your code more concise.
How does it handle nested objects?
The tool automatically detects nested JSON objects and generates separate Java class definitions for each nested structure. It also properly handles arrays and lists of objects.
Is my data safe when using this tool?
Absolutely. All processing happens locally in your browser. No data is uploaded to any server, ensuring your information remains completely private and secure.
Can I customize the root class name?
Yes, you can specify a custom root class name using the Root name input field. The default name is 'Root', but you can change it to any valid Java class name.