JSON to Java Converter

Build Java POJO classes from JSON examples with getters-friendly field names.

JSON Input

Java Output

Class:

Package:

LombokRecords (Java 16+)JacksonGson

POJOs aligned to JSON keys

Jackson and Gson need Java fields that match serialized property names. CalcForge transforms sample JSON into class hierarchies with lists and nested types—useful when bootstrapping DTOs for Spring controllers or Android clients.

Good fits

Creating request/response models from example API payloads
Migrating legacy XML services to JSON-first Java clients
Generating starter classes before annotation processors run
Documenting data contracts in Java-centric teams

JSON:
{"orderId":"A-9","lines":[{"sku":"X1","qty":2}]}

Java:
public class Root {
    private String orderId;
    private List<Line> lines;
}

Practical notes

Add Jackson annotations (`@JsonProperty`) if naming strategy differs from defaults.
Use Lombok or records in modern codebases—paste generated fields into your preferred pattern.
Feed multiple samples to capture optional properties absent from one response.

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Frequently asked questions

Are getters and setters included?

Output may be field-centric. Add getters, setters, or Lombok `@Data` according to your project standards.

Does it support Java records?

Convert class output to records manually in Java 16+ projects—structure maps directly.

How are date strings handled?

ISO date strings typically become `String` or `Instant` depending on generator heuristics—set explicitly for your serializer.

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