Prev Next

API / Swagger Interview questions

How do you document request and response examples in OpenAPI?

OpenAPI lets you attach concrete example values to a schema, parameter, request body, or response, giving consumers a realistic sample of actual data alongside the abstract type/shape description — useful because a schema alone doesn't always convey what "realistic" values actually look like.

responses:
  '200':
    content:
      application/json:
        schema:
          $ref: '#/components/schemas/User'
        examples:
          basicUser:
            summary: A typical active user
            value:
              id: 42
              email: jane@example.com
              status: active
          suspendedUser:
            summary: A suspended account
            value:
              id: 43
              email: bob@example.com
              status: suspended

OpenAPI supports two related mechanisms: a single example field for one sample value, or an examples map (as shown above) for multiple named examples covering different scenarios, which Swagger UI renders as a selectable dropdown so a consumer can inspect several realistic variations of the same response.

Providing multiple named examples is especially valuable for polymorphic or conditionally-shaped responses — showing what a response looks like in both a success and an edge-case scenario communicates far more than the schema's type constraints alone ever could.

What does the examples map (plural) allow that a single example field doesn't?
How does Swagger UI typically present multiple named examples?

More Related questions...

What is Swagger? What is the purpose of Swagger? What is the OpenAPI Specification? What is the difference between Swagger and OpenAPI? What are the key components of Swagger? What is Swagger UI? What is Swagger Editor? What is Swagger Codegen? Define paths in an OpenAPI document? What are operations in OpenAPI? What is a schema in OpenAPI? What are the supported formats for writing an OpenAPI document? What is the purpose of the info object in OpenAPI? What are tags used for in Swagger? List the HTTP methods supported in OpenAPI operations? What is a parameter in OpenAPI, and what are its types? What is a response object in OpenAPI? Describe the components section in OpenAPI 3.0? What is $ref used for in OpenAPI documents? How do you use Swagger annotations in a Java Spring Boot application? What is the difference between OpenAPI 2.0 (Swagger) and OpenAPI 3.0? What is the difference between OpenAPI 3.0 and OpenAPI 3.1? Why is contract-first API design preferred over code-first in some teams? How does Swagger support security schemes like OAuth2 and API keys? What is the difference between springfox and springdoc-openapi? How do you document request and response examples in OpenAPI? Explain how Swagger Codegen generates client SDKs from an OpenAPI spec? What is the difference between path parameters and query parameters? How do you handle polymorphism and discriminators in OpenAPI schemas? Explain the lifecycle of validating an OpenAPI document with a linter like Spectral? When should you use the allOf, oneOf, and anyOf keywords in OpenAPI schemas? How do you version a REST API documented with Swagger? What happens when you click "Try it out" in Swagger UI? How do you split a large OpenAPI specification across multiple files? Explain the internal working of Swagger UI's rendering process? How do you mock an API server using an OpenAPI specification? What is the difference between Swagger and Postman? How do you deprecate an API operation in OpenAPI? Explain the execution flow of generating server stubs from an OpenAPI document? What is the difference between Swagger 2.0's definitions and OpenAPI 3.0's components/schemas? How does content negotiation work in OpenAPI, using the content field? Why doesn't OpenAPI natively describe webhooks before version 3.1? How do you handle authentication in Swagger UI for testing secured endpoints? What is the difference between OpenAPI Generator and the legacy Swagger Codegen? Explain how to enforce validation constraints in an OpenAPI schema? How do you convert a Swagger 2.0 document to OpenAPI 3.0? What is the role of the servers object in OpenAPI 3.0? Explain the internal working of $ref resolution across multiple OpenAPI files? How do you implement contract testing using an OpenAPI specification? Explain the execution flow of API documentation generation in a CI/CD pipeline using Swagger/OpenAPI tooling?
Show more question and Answers...

BigData

Comments & Discussions

Interviews Questions

About Javapedia.net

Javapedia.net is for Java and J2EE developers, technologist and college students who prepare of interview. Also this site includes many practical examples.

This site is developed using J2EE technologies by Steve Antony, a senior Developer/lead at one of the logistics based company.

Follow Javapedia updates

contact: javatutorials2016[at]gmail[dot]com

Kindly consider donating for maintaining this website. Thanks.

Copyright © 2026, javapedia.net, all rights reserved. .

DMCA.com Protection Status