Input
Sample Templates
Output
Generate POJOs to see the output here
JSON to POJO Converter
Convert JSON data to Java POJOs with customizable options
How to convert JSON to POJO online?
Convert JSON data to Java POJOs with our professional code generator. Generate classes with proper annotations, getters, setters, and validation. Perfect for API development, data modeling, and Java application integration with enterprise-grade features.
Tips & Best Practices
- All processing happens in your browser — no data is sent to any server.
- Use the copy button to quickly transfer results to your clipboard.
- The tool works offline once loaded — no internet connection required for processing.
- Check the FAQ section below for answers to common questions.
- Share this tool with colleagues using the social sharing buttons.
FAQ
What is a POJO?
POJO stands for Plain Old Java Object. It's a Java object that doesn't extend or implement any special classes or interfaces, making it simple and portable.
What Java versions are supported?
The converter supports Java 8, 11, 17, and 21 with appropriate syntax and features for each version.
Can I customize the generated code?
Yes, you can configure package names, class names, annotations (Lombok, Jackson, Bean Validation), and various generation options to match your project requirements.
What frameworks are supported?
The tool supports Spring Boot, Jakarta EE, and plain Java projects with appropriate annotations and imports for each framework.
How does JSON to POJO conversion work?
The tool analyzes your JSON structure, infers data types, generates corresponding Java classes with proper annotations, getters, setters, and utility methods.
Can I handle complex nested JSON structures?
Yes, the tool automatically creates nested classes for complex objects and handles arrays, null values, and various data types including dates and numbers.
What annotations are available?
The tool supports Jackson annotations for JSON serialization, Bean Validation annotations for data validation, and Lombok annotations to reduce boilerplate code.
Can I generate test files?
Yes, you can include test files and README documentation with your generated POJOs for a complete project structure.
Is the generated code production-ready?
The generated code follows Java best practices with proper naming conventions, annotations, and structure suitable for production use.
How do I use the generated POJOs?
Simply copy the generated classes to your project and use them with your JSON processing libraries like Jackson or Gson for serialization and deserialization.