Free Online JSON to Java Class Converter
JSON to Java Class Converter is a free online tool that turns JSON data into a ready-to-use Java class, complete with private fields, getters, setters, and nested static classes, directly in your browser.
Paste JSON into the input editor or upload a JSON file to instantly generate a Java class that mirrors the structure of your data, including nested objects and arrays.
Why use this JSON to Java Class Converter?
- Convert JSON to a Java class instantly in your browser.
- Upload JSON files directly from your computer.
- Choose your own top-level class name.
- Nested JSON objects become nested static Java classes.
- JSON arrays are converted into typed List fields.
- Generates getters, setters, and @JsonProperty annotations for Jackson.
- Copy or download the generated .java file.
- No server-side processing is required.
Common Questions
What is JSON to Java class conversion?
JSON to Java class conversion turns structured JSON data into a Java POJO (Plain Old Java Object) whose fields mirror the JSON structure, so you can deserialize similar JSON payloads in a Java application.
How do I convert JSON to a Java class?
Paste your JSON into the input editor or upload a JSON file. The converter automatically parses the JSON and displays the resulting Java class in the output editor.
How are JSON arrays converted to Java?
JSON arrays are converted into List fields. For example, an array of product objects becomes a List<Product> field, with a nested Product class generated for the array's structure.
How are nested JSON objects handled?
Each nested JSON object becomes its own nested static Java class, named after the JSON key that contained it, keeping the generated file self-contained and easy to copy into a project.
Is this JSON to Java class converter free?
Yes. This JSON to Java class converter is free to use online and processes the conversion directly in your browser.