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REST Assured API Automation with Java

Automate REST API testing with Java from the first request: Maven and TestNG setup, Given-When-Then, CRUD methods, headers and parameters, response assertions and JSONPath, authentication, POJOs, test data and chaining, JSON Schema contracts, negative and security tests, framework design, reports and CI, ending with a capstone API framework and interview prep. A complete, hands-on path from your first test to a production-grade framework.

72
Lessons
12
Sections
12
Practice labs
~26h
Of content
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checkout.spec.ts
1import { test, expect } from '@playwright/test';
2
3test('checkout applies coupon', async ({ page }) => {
4  await page.goto('/cart');
5  await page.getByLabel('Coupon').fill('QA20');
6  await page.getByRole('button', { name: 'Apply' }).click();
7  await expect(page.getByTestId('total')).toHaveText('$80.00');
8});
1 passedchromium · 1.2s

The method

Built like real QA work, not a video playlist.

Learn

72 focused lessons, each a few minutes long.

Practice

12 hands-on labs in a browser workspace.

Test yourself

12 section assessments plus a final exam.

Prove it

A public, verifiable achievement for recruiters.

What you will learn

  • Java and Maven API Automation Setup: Why REST Assured for API Automation, Creating a Maven Project with REST Assured and TestNG, Project Structure, Base Test and Configuration
  • REST Assured Given-When-Then: Anatomy of given(), when() and then(), Reusable Request Specifications, Reusable Response Specifications
  • GET, POST, PUT, PATCH and DELETE: GET Requests: Lists, Single Resources and Path Parameters, POST Requests: Creating Resources, PUT Requests: Replacing a Resource
  • Headers, Parameters and Request Bodies: Request Headers: Accept, Content-Type and Custom Headers, Query Parameters: Filters, Sorting and Pagination, Path Parameters and Reusable Endpoint Templates
  • Validating Responses: Status Codes and Status Lines, Asserting Response Headers, Reading JSON with JsonPath and GPath
  • Authentication and Authorization: Authentication vs Authorization: What Testers Check, Basic Auth, Preemptive Auth and API Keys, Bearer Tokens: Log In, Extract and Reuse

Where you will be at the end

  • Complete 12 hands-on practice challenges, one per section (from Java and Maven API Automation Setup to Capstone and Interview Readiness)
  • Pass 12 section assessments
  • Build the portfolio project: Capstone: Customer and Order Management API Suite
  • Pass the REST Assured API Automation with Java final assessment and add the result to your Skill Passport

Who this course is for

  • Beginners and manual testers starting this skill from scratch
  • Working testers who want to apply it on real projects
  • Experienced QA engineers and SDETs going deeper for senior roles
  • Anyone preparing for QA interviews that ask about this skill
  • Best if you already have: Basic API testing knowledge (Postman helps); No Java experience needed beyond the basics taught in section 1

Curriculum

13 sections, one clear path.

LessonPracticeKnowledge checkProjectAssessment
    • Why REST Assured for API Automation
    • Knowledge check
    • Creating a Maven Project with REST Assured and TestNG
    • Knowledge check
    • Project Structure, Base Test and Configuration
    • Knowledge check
    • Writing and Running Your First API Test
    • Knowledge check
    • Logging Requests and Responses for Debugging
    • Knowledge check
    • Running Against Different Environments
    • Knowledge check
    • Lab 1: Configure the Suite and Write a Health Check
    • Section assessment

Members-only toolkit

Take the course with you

Made from this course's own lessons, quizzes and labs — ready to revise before interviews or use at work.

Course cheat sheet

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Interview Q&A pack

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Lab solutions & hints

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  • Auto-checked labs
  • Capstone portfolio project
  • Timed final exam

Why paid courses

More than a free course: practice, proof and a portfolio

What you getFreeAcademy
Short lessons with examples
Quick checks and certificate
Hands-on labs checked automatically
Section tests and a timed final exam
Portfolio capstone project with milestones
Cheat sheet, interview pack and lab answers to download
Verified skills on your profile and Skill Passport

What Students Are Saying

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REST Assured API Automation with Java: common questions

1.Do I need experience before starting REST Assured API Automation with Java?
Basic API testing knowledge (Postman helps). No Java experience needed beyond the basics taught in section 1.
2.What can I try for free, and what needs payment?
5 preview lessons are open to everyone. Full access to every lesson, lab and assessment is a one-time payment. The current price, and any offer that is still running, is shown in the access panel on this page and confirmed again at checkout.
3.How long does the course take?
About 26 hours of lessons and labs, fully self-paced. Your progress is saved automatically so you can stop and continue any time.
4.What do I get when I finish?
Passing the final assessment gives you a verifiable achievement page you can share, and the result is added to your Skill Passport.

Finish with proof, not just a certificate PDF.

Pass the final assessment and get a public verification page showing your score, completion date and the skills you demonstrated — ready to share on LinkedIn.

Graded labs

On top of the practice lab in every section. Each one is checked on our server, and your attempt history is kept.

  • API request & response

    Validate a product API response

    Write the exact request and assertions for a Demo Shop product lookup.

  • Framework design

    Design a REST Assured framework

    Place each piece of a maintainable API framework in the right layer.

Capstone project

Publish your REST Assured framework and submit evidence that it runs.

How it is scored (out of 100, pass at 80)

  • Public GitHub repository is reachable (15 pts)
  • README in the repository (10 pts)
  • CI workflow in .github/workflows (10 pts)
  • Report is a valid Surefire XML (10 pts)
  • 10 or more tests in the report (20 pts)
  • Green run: 0 failures and 0 errors (20 pts)
  • Negative or auth tests present (names with invalid, unauthorized, 400, 401, 403 or 404) (15 pts)

Certificate

  • All lessons completed
  • Required graded labs passed (2)
  • Every section test passed at 70%
  • Capstone accepted at 80/100
  • Final exam: 40 questions, 60 minutes, 80% to pass

Issued once, with your name and a public verification page.

Buying this course

  • One-time payment through Razorpay, with lifetime access to this course.
  • Sign in first, then pay with the same email so access unlocks on your account.
  • After paying, this page shows "Confirming your payment" until Razorpay confirms it.
  • The price is set on our server. You are never charged for a course you already own.

REST Assured API Automation with Java: questions

1.Do I need to install anything?
You can read every lesson in the browser. For the hands-on labs you install the tools on your own computer (Java, REST Assured, TestNG, Maven). Each lab gives you the starter files and steps.
2.What do I need before starting?
Know what an API request and response are. Basic Java helps.
3.Can I try it before buying?
Yes. 5 preview lessons are open to everyone, with their quizzes.
4.How do I get the certificate?
Finish all lessons, pass the required graded labs, pass every section test (70%), get your capstone accepted (80 out of 100) and pass the final exam (40 questions in 60 minutes, 80%). Our server checks each item. The certificate has a public link anyone can use to verify it.
5.How does payment work?
It is a one-time payment through Razorpay. Pay while signed in with the same email as your account. Access unlocks after Razorpay confirms the payment, usually within seconds. If you already own the course, you will not be charged again.
6.Are tests run on your servers?
No. You run Java and JMeter on your own computer and submit your code, answers or result files. We check them on our server and never run load tests against public websites.

Keep practicing

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Course guide

About this REST Assured course

This REST Assured course teaches API automation with Java, from your first Given-When-Then test to a complete REST Assured framework with reports and CI. It has 12 sections and 72 lessons, about 24 hours of study, with a practice lab and an assessment in every section, graded labs, a rubric-scored portfolio project and a final exam.

You set up Java and Maven, then cover every HTTP method, headers, parameters and request bodies, response validation with JSONPath, authentication, POJOs with serialization, chaining requests into business flows, JSON Schema contract checks, and negative, boundary and security tests. Every request in the labs goes to a real practice API, so you see real responses.

Who this course is for

  • Testers who know Postman and want to automate APIs in Java
  • Selenium testers adding API automation to their skills
  • Freshers aiming for SDET or API automation roles
  • Anyone preparing for REST Assured interview rounds

What you need

  • Know what an API request and response are
  • Basic Java helps; setup with Maven is covered in section 1
  • A laptop that can run Java and an IDE such as IntelliJ

What you will be able to do

  • Write REST Assured tests in the Given-When-Then style
  • Validate status codes, headers and JSON bodies with JSONPath
  • Map JSON to Java objects with POJOs
  • Chain requests to test full business flows
  • Add JSON Schema checks to catch contract breaks
  • Build a REST Assured framework with reports that runs in CI

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