Generate Java Classes from API Response

Generate Java classes with Jackson annotations from a typical REST API JSON response. Paste your API JSON and get production-ready typed Java class files.

100% client-side. Your data never leaves your browser. 

// Generated by DevBento — json-to-typescript
interface RootAddress {
  street: string;
  city: string;
  zip: string;
}

interface RootPostsItem {
  title: string;
  likes?: number;
}

interface Root {
  id: number;
  name: string;
  email: string;
  isActive: boolean;
  roles: string[];
  address: RootAddress;
  posts: RootPostsItem[];
}
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Generate Java Classes from API Response

This example generates Java classes with Jackson annotations from a typical REST API response. The pre-filled JSON represents a user object with nested address, array of roles, and array of post objects. Switch to Java mode to see the generated classes.

What You Get

The tool produces:

How to Use

  1. The example loads with a sample API response and Java mode pre-selected
  2. Inspect the generated Java classes and their Jackson annotations
  3. Copy the classes and paste them into your Java project
  4. Replace with your actual API response to generate classes for your endpoints

Real-World Pattern

Java classes with Jackson annotations are the standard way to deserialize API responses in Spring Boot and other Java frameworks. The generated code works directly with objectMapper.readValue(json, Root.class). Use @Nullable for fields that may not always be present in the response.