JSON to Java Converter

How to use

1. Paste JSON input from your API payload or sample document.
2. Select your output target and model options.
3. Generate, review, and copy the result.

Benefits

• Handles nested objects and arrays from API responses.
• Reduces manual model writing and naming inconsistencies.
• Works instantly in browser with copy-ready output.

Best use cases

• Generate Java POJOs for backend and Android API integrations.
• Bootstrap model classes for serialization/deserialization workflows.
• Reduce repetitive class scaffolding from nested response payloads.

Type mapping notes

• JSON object properties map to Java class fields.
• Nested objects map to dedicated nested model classes.
• Array values map to typed collection fields based on inferred items.

Implementation tips

• Align field naming with your serializer strategy before production use.
• Review primitive vs boxed types when nullability matters.
• Group generated models in a dedicated package for maintainability.

Sample JSON

{
  "id": 101,
  "name": "Ada Lovelace",
  "active": true,
  "roles": ["admin", "editor"],
  "profile": {
    "email": "ada@example.com",
    "score": 9.8
  }
}

Sample output

public class UserModel {
  public Integer id;
  public String name;
  public Boolean active;
}

FAQ