Generate JSON Schema from Java Object

GenerateJsonSchemaFromObject

public class JsonSchemaUtility {

    public static void main(String[] args) throws Exception {
        ObjectMapper objectMapper = new ObjectMapper();
        // Serialize a LocalDate using the corresponding ISO formatter
        objectMapper.registerModule(new SimpleModule().addSerializer(new LocalDateSerializer(DateTimeFormatter.ISO_LOCAL_DATE)));
        // Serialize a OffsetDateTime using the corresponding custom formatter
        objectMapper.registerModule(new SimpleModule().addSerializer(new CustomOffsetDateTimeSerializer(OffsetDateTime.class)));
        // Serialize a Year using the corresponding ISO formatter
        objectMapper.registerModule(new SimpleModule().addSerializer(YearSerializer.INSTANCE));
        JsonSchemaGenerator schemaGen = new JsonSchemaGenerator(objectMapper);
        JsonSchema schema = schemaGen.generateSchema(YourObject.class);
        schema.set$schema("http://json-schema.org/draft-07/schema#");
        System.out.println(objectMapper.writeValueAsString(schema));
    }
}