Postman API Testing Complete Guide 2026 | GET, POST, PUT, DELETE + Newman Automation in 15 Minutes
Learn Postman API Testing from scratch in just 15 minutes — covering REST API requests
(GET, POST, PUT, DELETE), Collections, environment variables, assertions, Newman CLI
automation, and Bearer token authentication. Perfect for beginners (2026).
📌 Best for: Beginners | Java Developers | Spring Boot API Testers | QA Engineers | Interview Prep
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🎯 What You'll Learn – Postman API Testing Tutorial:
✅ REST API & HTTP methods overview (GET, POST, PUT, DELETE)
✅ How to set up Postman with environment variables and collections
✅ GET request with path variables and query parameters
✅ POST request with JSON body and headers
✅ PUT and DELETE request examples in Postman
✅ Reading JSON responses and HTTP status codes
✅ Writing Postman test assertions (automated checks)
✅ Running API automation with Collection Runner and Newman CLI
✅ API authentication in Postman (Bearer tokens, headers)
✅ Best practices and common Postman mistakes to avoid
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🔗 Continue Learning – Spring Boot + API Series:
▶ Create REST APIs using Spring Boot → • Complete Spring Boot REST API Tutorial wit...
▶ CRUD Operations using Spring Boot → • Implement CRUD Operations using Spring Boo...
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💻 Technologies: Postman | Newman CLI | REST API | Spring Boot | JSON | HTTP
👤 Who Is This For?
→ Beginners learning API testing for the first time
→ Java and Spring Boot developers testing their REST APIs
→ QA engineers getting started with Postman automation
→ Students preparing for backend or full stack job interviews
🔔 Subscribe for weekly Postman, Spring Boot, React & Full Stack tutorials!
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