MVC[model-view-controller]

🧠 [WHAT IS MVC? – OVERLAY SLIDE: 'MVC = Model + View + Controller']

📖 "MVC is a design pattern used to organize your code in a clean, structured way — especially in Java web applications.
It splits your app into three core components:

Model – handles your data and business logic

View – what the user sees (UI)

Controller – acts as a bridge between Model and View"

🧩 "Think of MVC like a restaurant:

The Model is the kitchen (business logic, data)

The View is the plate of food (what the user sees)

The Controller is the waiter (taking requests and serving responses)"

📦 [MODEL – LOGIC & DATA]

🧑‍💻 "Let’s break each one down.
First up: the Model. This is where your data lives — whether it’s a Java class like User.java, or connecting to a database using JDBC or JPA.
It doesn’t care how data is shown — it just knows how to handle it."

public class User {
private String name;
private String email;
// getters and setters
}

🎨 [VIEW – UI LAYER]

🖼 "Next: the View. This is your user interface — what the user interacts with.
In a Java web app, this might be a JSP (JavaServer Pages) file or HTML + Thymeleaf.

Welcome, ${user.name}!

The View just shows the data — it doesn’t process or store it."

🕹 [CONTROLLER – TRAFFIC COP]
📡 "Now, the Controller — the brains in the middle.
It receives user input (like form submissions), calls the Model to process data, and then tells the View what to show.

In Spring Boot, it might look like this:"

@Controller
public class UserController {
@GetMapping("/user")
public String getUser(Model model) {
User user = new User("Vimalraj", "[e-mail]");
model.addAttribute("user", user);
return "userView";
}
}

🛠 [MVC IN FRAMEWORKS – SPRING MVC]
🚀 "Java has several frameworks that follow the MVC pattern — most notably Spring MVC.
It makes building robust, modular web applications so much easier. The structure is clean, testable, and scalable."

📁 "Typically, your folders would look like this:

/model

/controller

/view

💡 WHY USE MVC?

📌 "Quick recap — why use MVC?

✅ Separates concerns
✅ Makes your code easier to maintain
✅ Improves testability
✅ Scales better in real-world projects"

🎯 [WRAP UP]
🗣 "So there you have it — the MVC pattern in Java!
It’s clean, it’s powerful, and it’s everywhere — from small apps to enterprise-level systems. If you’re diving into Java web development, mastering MVC is an absolute must."