Build Your First Spring Boot API — Full CRUD Step-by-Step

Build a Spring Boot REST API with full CRUD operations from scratch! Step-by-step Java backend tutorial for 2025.

🚀 Build a Spring Boot REST API with full CRUD operations from scratch! Step-by-step Java backend tutorial for 2025. 💻 Learn to create, read, update, and delete data using Spring Boot, Spring Data JPA, and test with Postman.

🛠️ In this comprehensive tutorial, you will learn how to:
⚙️ Set up a Spring Boot project for REST API development.
🧱 Create JPA Entities to model your data (Product entity).
🗄️ Build Spring Data JPA Repositories for database interactions.
🧠 Implement a Service layer to handle your business logic.
🕹️ Develop REST Controllers with Spring MVC, mapping all essential CRUD endpoints:
➕ POST: Create new products.
🔍 GET: Fetch all products, a single product by ID, products by category, by price, and search by name.
🔄 PUT: Update existing products.
❌ DELETE: Remove products.
🛣️ Understand and use Path Variables and Request Parameters.
🧪 Effectively test your REST API endpoints using Postman.
🔄 See the complete flow from HTTP request to database operation and back.
🚧 Identify common pitfalls like missing input validation (we'll tackle this in the next video!).

💻 Technologies Covered:
- Java ☕
- Spring Boot (Spring Web, Spring Data JPA) 🌱
- Hibernate 🐻
- MySQL (or your chosen relational database) 🐬
- Postman 📮
- Maven 🛠️
🧑‍💻 Who is this tutorial for?
- Java developers eager to learn Spring Boot for backend development.
- Anyone wanting to build robust RESTful APIs.
- Students and professionals looking to enhance their web development skills. 🎓
- Beginners looking for a clear, step-by-step guide to CRUD operations. 🚶‍♂️➡️🚶‍♀️

💡 What's Next?
At the end of this video, we demonstrate creating a product with invalid data (like a negative price). This highlights the importance of server-side validation!
➡️ In our next video, we will dive deep into adding robust input validation to this Spring Boot API to make it production-ready. Make sure to subscribe so you don't miss it! 🔔

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📘 Resources Mentioned:
🧑‍💻 Source Code: https://github.com/learnwithiftekhar/spring-boot-crud-rest-api

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Contents:
00:00 Intro
00:42 Creating Spring Boot project
03:03 Project Structure
05:52 Start the project for the first time
06:40 Configuring the project for the database connection
09:52 Create the very first REST Endpoint
11:16 Create necessary packages
11:51 Create Entity
15:38 Create Product Repository
17:35 Defining Query Methods
21:55 Creating Service
27:38 Implement Product Controller
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