Introduction
Building a real-world e-commerce application is a comprehensive way to master Java Full Stack Development. It combines frontend, backend, database integration, security, and deployment—all essential skills for full stack developers.
At CuriosityTech.in, learners work on hands-on projects like e-commerce apps, giving them practical exposure to Spring Boot, React/Angular, MySQL/PostgreSQL, and cloud deployment, preparing them for industry-level challenges.
Why a Case Study Matters
- Real-World Application: Simulates enterprise-level challenges.
- Integration Skills: Combines frontend, backend, and database work.
- Security & Payment Handling: Learn authentication, authorization, and secure transactions.
- Portfolio Development: Projects like this strengthen resumes and showcase professional skills.
Step 1: Application Requirements
Features to Implement:
- User registration & login (JWT authentication)
- Product catalog (CRUD operations)
- Shopping cart management
- Order placement and checkout
- Admin panel for product and order management
- Integration with MySQL/PostgreSQL
- RESTful APIs with Spring Boot
- Frontend using React.js
Step 2: Architecture Diagram
Description:
This layered architecture ensures separation of concerns, making the application scalable and maintainable.
Step 3: Database Design
Users Table:
| Column | Type |
| id | BIGINT PK |
| username | VARCHAR |
| password | VARCHAR |
| role | VARCHAR |
Products Table:
| Column | Type |
| id | BIGINT PK |
| name | VARCHAR |
| price | DECIMAL |
| stock | INT |
Orders Table:
| Column | Type |
| id | BIGINT PK |
| user_id | BIGINT FK |
| total_price | DECIMAL |
| status | VARCHAR |
Step 4: Backend Implementation (Spring Boot)
ProductController.java
@RestController
@RequestMapping(“/api/products”)
public class ProductController {
@Autowired
private ProductService productService;
@GetMapping
public List<Product> getAllProducts() {
return productService.getAllProducts();
}
@PostMapping
public Product addProduct(@RequestBody Product product) {
return productService.addProduct(product);
}
}
User Authentication with JWT
@PostMapping(“/login”)
public ResponseEntity<?> loginUser(@RequestBody AuthRequest authRequest) {
Authentication authentication = authenticationManager.authenticate(
new UsernamePasswordAuthenticationToken(authRequest.getUsername(), authRequest.getPassword())
);
String token = jwtUtil.generateToken(authentication.getName());
return ResponseEntity.ok(new AuthResponse(token));
}
Step 5: Frontend Implementation (React)
Fetching Products
useEffect(() => {
fetch(“http://localhost:8080/api/products”)
.then(res => res.json())
.then(data => setProducts(data));
}, []);
Add to Cart Function
const addToCart = (product) => {
setCart([…cart, product]);
};
Checkout Example
const handleCheckout = async () => {
await fetch(“http://localhost:8080/api/orders”, {
method: “POST”,
headers: { “Content-Type”: “application/json” },
body: JSON.stringify({ products: cart, totalPrice: calculateTotal(cart) })
});
alert(“Order Placed Successfully!”);
};
Step 6: Security & Authentication
- JWT-based authentication for users
- Role-based access control (admin vs regular user)
- Input validation to prevent SQL Injection and XSS
Step 7: Best Practices for E-Commerce Full Stack
- Use RESTful APIs for communication between frontend and backend.
- Implement pagination and search for product catalog.
- Store sensitive data (passwords) using BCrypt hashing.
- Integrate CI/CD pipelines for automated testing and deployment.
- Deploy application on cloud platforms (AWS, Azure, or GCP).
Integrating CuriosityTech Perspective
At CuriosityTech.in, learners build end-to-end projects like e-commerce apps. Students gain practical skills in Spring Boot, React, database integration, authentication, and cloud deployment, preparing them to tackle real-world enterprise applications confidently.
Conclusion
Building a complete Java Full Stack E-Commerce Application demonstrates mastery in frontend, backend, security, and deployment. With hands-on training at CuriosityTech.in, developers not only gain technical expertise but also experience in building scalable, production-ready applications.
