JSON to Java POJO — Generate Java Classes From JSON Online

Cách dùng

1. 1 Paste a JSON object or array (the first element is used for arrays).
2. 2 Name the root class and optionally set a package.
3. 3 Pick annotation style: Jackson, Lombok, or plain getters/setters. Toggle records for Java 16+ value types.
4. 4 Copy or download the generated <code class="font-mono">.java</code> file.

Vì sao dùng công cụ này

• Generates a complete POJO (Plain Old Java Object) — fields, getters, setters, equals/hashCode where appropriate.
• Hand-rolled type inference — integer vs long, double, boolean, String.
• Nested objects become nested static classes; arrays become typed <code class="font-mono">List&lt;&gt;</code>.
• Toggle annotations to match your team's style (Jackson + Lombok is a popular combo).
• Pure client-side — your JSON stays in the browser, no upload.

Câu hỏi thường gặp

JSON to Java POJO là gì?

A POJO (Plain Old Java Object) is a simple Java class with fields, getters, and setters and no framework-imposed restrictions. A JSON to POJO converter reads a JSON document, infers field types (Integer, Long, Double, Boolean, String, List), and emits a Java class with optional Jackson annotations, Lombok shortcuts, or Java 16+ record syntax — saving the boilerplate of mapping each property by hand.

Công cụ liên quan