DEV Community: Ruturaj Jadhav

Understanding Spring Boot MVC

Ruturaj Jadhav — Sun, 09 Mar 2025 14:57:27 +0000

In the previous blog, we got an overview of a Basic Spring Boot Application. Now, let's dive deeper and understand how the core components work together in an MVC structure.

Before Starting, We Should Know:

1. Model

The Model represents the data and business logic of the application. It defines the structure of the data we are working with.

Example:

public class User {
    private Long id;
    private String name;
    private String email;

    // Getters and Setters
}

2. Repository

The Repository layer interacts with the database. It is responsible for data storage, retrieval, and query execution.

Example:

import org.springframework.data.jpa.repository.JpaRepository;

public interface UserRepository extends JpaRepository<User, Long> {
}

3. Service

The Service layer contains business logic. It processes data before sending it to the Controller.

Example:

import org.springframework.stereotype.Service;
import java.util.List;

@Service
public class UserService {
    private final UserRepository userRepository;

    public UserService(UserRepository userRepository) {
        this.userRepository = userRepository;
    }

    public List<User> getAllUsers() {
        return userRepository.findAll();
    }
}

4. Controller

The Controller handles user requests, interacts with the Service layer, and returns responses.

Example:

import org.springframework.web.bind.annotation.*;
import java.util.List;

@RestController
@RequestMapping("/users")
public class UserController {
    private final UserService userService;

    public UserController(UserService userService) {
        this.userService = userService;
    }

    @GetMapping
    public List<User> getUsers() {
        return userService.getAllUsers();
    }
}

5. Exception Handling

Exception handling is important to manage errors gracefully. Spring Boot provides @ControllerAdvice for centralized exception handling.

Example:

import org.springframework.web.bind.annotation.*;

@RestControllerAdvice
public class GlobalExceptionHandler {
    @ExceptionHandler(Exception.class)
    public String handleException(Exception e) {
        return "Error: " + e.getMessage();
    }
}

How Everything Works Together

The Controller receives a request (e.g., /users).
It calls the Service layer to process data.
The Service interacts with the Repository to fetch or save data.
The Repository retrieves data from the database.
The Service returns the data to the Controller.
The Controller sends a response to the client.
If an error occurs, the Exception Handling mechanism takes care of it.

This is how Spring Boot MVC works in a structured way!

In the upcoming Blog, we will learn about Annotations in Spring Boot.
Keep learning, keep growing! 🚀

Basic Spring Boot - Everything You Need to Know as a Beginner

Ruturaj Jadhav — Mon, 24 Feb 2025 14:12:29 +0000

What is Spring Boot?

Spring Boot is an advanced version of the Spring framework. It simplifies the development process by reducing the amount of boilerplate code required. Instead of writing extensive configurations, you can use predefined dependencies, making the code easier to read and maintain.

What are Spring Dependencies?

Spring dependencies are essential components of Spring Boot that enhance its functionality. They enable auto-configuration and make the development process more efficient. Additionally, whenever you make changes in your Spring Boot application, it automatically restarts, allowing you to see the updates in real-time on localhost.

Most Used Spring Dependencies

Spring Boot Starter Web - For building web applications and RESTful services.
Lombok - Reduces boilerplate code for model classes (e.g., Getters, Setters, Constructors).
MySQL - A relational database for storing application data.
Spring Data JPA - Simplifies database interactions.
Spring Security - Provides authentication and authorization features.

What is `application.properties` in Spring Boot?

The application.properties file in Spring Boot is used to configure various settings within the application. It is located inside the resources folder.

In this file, you can specify properties like:

Database configuration (username, password, URL)
Server properties (port number, context path)
Logging levels and more, depending on the project's requirements.

What is MVC in Spring Boot?

MVC stands for Model-View-Controller architecture. It is a design pattern that helps in organizing code efficiently.

Model: Represents the entity (database objects).
View: The UI layer that is displayed to users.
Controller: The layer where REST APIs are created to handle user requests.

A typical Spring Boot project follows a structured approach by organizing files into packages like:

Model (Entities)
Repository (Data access layer)
Service (Business logic layer)
Controller (API endpoints)
Exception Handling (Custom error responses)

We will explore these concepts in the next blog. Until then, keep learning and keep enjoying Spring Boot!

Thank you! 🚀

Vite: The Ultimate Tool for Fast React Development

Ruturaj Jadhav — Tue, 04 Feb 2025 16:03:22 +0000

What is Vite?

Vite (French for "fast") is a next-generation frontend tool that significantly improves the development and build process of JavaScript applications, including React. Unlike traditional bundlers like Webpack, Vite leverages ES Modules (ESM) and native browser support to provide instant hot module replacement (HMR) and ultra-fast builds.

Why Use Vite for React?

1. Superfast Development Server 🚀

Vite serves your React app with native ESM, eliminating the need for bundling during development. This results in near-instant startup times.

2. Instant Hot Module Replacement (HMR) 🔄

With Vite’s HMR, changes in your React components reflect immediately in the browser without requiring a full reload. This speeds up development and maintains the application state.

3. Lightning-Fast Builds ⚡

Vite uses Rollup for production builds, which optimizes and tree-shakes your code for smaller bundle sizes and faster load times.

4. Zero Configuration Setup 🛠️

Setting up React with Vite requires minimal configuration. Just one command, and you're ready to code!

5. Plugin Ecosystem & TypeScript Support ✅

Vite has a rich plugin ecosystem and supports TypeScript, JSX, CSS preprocessors, and more right out of the box.

How to Set Up React with Vite?

Setting up a React project with Vite is incredibly simple. Follow these steps:

Step 1: Create a React App with Vite

Run the following command in your terminal:

npm create vite@latest my-react-app --template react

Step 2: Navigate and Install Dependencies

cd my-react-app
npm install

Step 3: Start the Development Server

npm run dev

Your React app will now be running with instant HMR and fast refresh!

Vite vs. Create React App (CRA): Which One is Better?

Feature	Vite 🚀	Create React App (CRA) 🐢
Startup Speed	Instant	Slow
Hot Module Replacement	Yes	Yes (but slower)
Build Performance	Optimized	Slower
Default Config	Minimal	Heavy
Support for TypeScript, CSS, etc.	Yes	Yes

✅ Why Vite is Better?

Faster startup & development (no unnecessary bundling)
Optimized production builds (tree-shaking, code splitting)
More efficient & modern approach

Final Thoughts

Vite is a game-changer for React developers looking for speed, simplicity, and efficiency in their development workflow. If you're starting a new React project, Vite is the way to go!

Are you already using Vite? Share your experience in the comments! 🚀

Vite Documentation

For more details, check out the official Vite documentation: Vite Official Docs

🚀 Mastering Axios: Simplifying HTTP Requests

Ruturaj Jadhav — Fri, 31 Jan 2025 14:00:16 +0000

What is Axios?

Axios is a popular JavaScript library for making HTTP requests. It provides a simple API for handling GET, POST, PUT, DELETE, and other HTTP methods with ease.

Why Use Axios?

✅ Supports Promises & Async/Await

✅ Automatic JSON Data Handling

✅ Error Handling Made Easy

✅ Works on Both Browser & Node.js

Installing Axios

npm install axios

Or include it via CDN:

<script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>

Making Requests with Axios

1️⃣ GET Request

import axios from 'axios';

// Synchronous GET request
const getData = () => {
  axios.get('https://jsonplaceholder.typicode.com/posts/1')
    .then(response => console.log('GET Response:', response.data))
    .catch(error => console.error('GET Error:', error));
};

getData();

2️⃣ POST Request

const postData = () => {
  axios.post('https://jsonplaceholder.typicode.com/posts', {
      title: 'Axios Guide',
      body: 'This is a simple guide to Axios.',
      userId: 1
    })
    .then(response => console.log('POST Response:', response.data))
    .catch(error => console.error('POST Error:', error));
};

postData();

3️⃣ PUT Request

const putData = () => {
  axios.put('https://jsonplaceholder.typicode.com/posts/1', {
      title: 'Updated Axios Guide',
      body: 'This guide is now updated.',
      userId: 1
    })
    .then(response => console.log('PUT Response:', response.data))
    .catch(error => console.error('PUT Error:', error));
};

putData();

4️⃣ DELETE Request

const deleteData = () => {
  axios.delete('https://jsonplaceholder.typicode.com/posts/1')
    .then(response => console.log('DELETE Response:', response.data))
    .catch(error => console.error('DELETE Error:', error));
};

deleteData();

Why This is Better?

✅ Cleaner syntax compared to Fetch API

✅ Built-in request and response interception

✅ Supports request timeouts and cancellation

✅ Handles all HTTP methods efficiently

Conclusion

Axios makes API requests in JavaScript simpler and more efficient. Whether you're fetching data, updating records, or deleting content, Axios is a must-have for modern web development! 🚀

What Do You Think?

Are you using Axios in your projects? What do you want to learn next? Stay tuned for more! 🚀

📚 Official Documentation

For more details, check out the official Axios documentation: Axios Docs

🚀 20 React Projects Every Beginner Should Build

Ruturaj Jadhav — Wed, 29 Jan 2025 13:15:04 +0000

Are you starting your journey with React and wondering what projects to build? Look no further! I’ve created a series of React projects to help beginners grasp essential concepts while having fun coding. This list covers everything from basic state management to API integrations, ensuring a well-rounded learning experience.

🔥 Why Build Projects?

Theory alone won’t make you a React pro. Projects give you hands-on experience, improve problem-solving skills, and help you understand how React works in real-world applications. Plus, they make your portfolio stand out!

🌱 Beginner-Friendly Projects

These projects introduce core React concepts like props, state, and event handling.

Props Explorer – Learn how to pass and use props effectively.
Counter App – A simple app using useState to manage count.
Background Color Changer – Change the background color dynamically using state.
Word Calculator – Count words in a text input field.
Day-Night Theme Switcher – Toggle between light and dark modes.
Digital Clock – Display real-time updates using useEffect.

🚀 Intermediate-Level Projects

These projects introduce form handling, API integration, and React hooks.

Form Validation – Implement controlled components and validate user input.
Joke Generator – Fetch random jokes from an API and display them.
Temperature Converter – Convert temperatures between Celsius and Fahrenheit.
Number Guessing Game – Let users guess a randomly generated number.
Navbar Component – Build a reusable navigation bar with dynamic links.
Modal with Inputs – Create a pop-up modal that takes user input.
QR Code Generator – Generate QR codes based on user input.

⚡ Advanced React Projects

These projects involve state management, external APIs, and performance optimizations.

GitHub Profile Finder – Fetch and display GitHub user details using their username.
Inshorts News App – Fetch and display news headlines dynamically.
Country Info App – Show country details by fetching data from an API.
Unsplash Image Search – Use the Unsplash API to display images.
Pokémon API App – Fetch and display Pokémon details.
To-Do List – A CRUD-based to-do app with task management features.
Weather App – Search for cities and display live weather updates.

🎯 What’s Next?

Building these projects will strengthen your React skills and help you move towards full-stack development. I’ve documented my journey by creating a React project series, which you can explore in my repository. Feel free to check it out, try the projects, and contribute! 🚀

🔗 React Projects Repository

Would you like me to tweak or expand anything? 😊

Understanding React Props: A Beginner-Friendly Guide

Ruturaj Jadhav — Wed, 29 Jan 2025 12:22:05 +0000

If you're learning React, you might have come across the term props. But what exactly are they, and why do we use them? Let’s break it down in the simplest way possible.

What Are Props?

Props (short for properties) are a way to pass data from one component to another in React. They help make components reusable by allowing them to receive different values.

How to Use Props in React

Using props in React is a three-step process:

Pass props to a component
Receive props in the child component
Use props inside the component

example

import React from "react";

function Greeting(props) {
  return <h1>Hello, {props.name}!</h1>;
}

function App() {
  return (
    <div>
      <Greeting name="Ruturaj" />
      <Greeting name="Parth" />
      <Greeting name="Aniruddha" />
    </div>
  );
}

export default App;

What’s Happening Here?

The Greeting component receives a prop called name.
Inside the Greeting component, we use {props.name} to display the value.
The App component passes different names ("Ruturaj", "Parth", "Aniruddha") as props.

The output will be:

Hello, Ruturaj!
Hello, Parth!
Hello, Aniruddha!

Why Use Props?

✅ Reusability – Props help create reusable components, reducing code duplication.
✅ Flexibility – Components become dynamic as they can accept different values.
✅ Unidirectional Data Flow – Keeps data flow simple and predictable.

Conclusion

Props are an essential part of React that allow you to pass data between components efficiently. Understanding how to use them correctly will make your components more reusable and maintainable.

Do you have any questions about React props? Drop a comment below! 🚀

React Hooks Every Developer Should Master

Ruturaj Jadhav — Sat, 25 Jan 2025 14:37:19 +0000

1️⃣ useState

The most fundamental React Hook for managing state in functional components.
✨ What does it do?
Lets you add local state to components.
Returns an array: the current state value and a function to update it.

💡 How to use:

const [count, setCount] = useState(0);

📌 Example Use Cases:
Building a counter.
Toggling UI elements (like modals).
Managing form input fields.

2️⃣ useEffect

Your go-to hook for managing side effects in React.
✨ What are side effects?
Things like fetching data, manually updating the DOM, or subscribing to events.
useEffect ensures these happen after rendering.

💡 How to use:

useEffect(() => { 
  fetchData(); 
}, [dependency]);

📌 Key Features:
Dependencies Array: Controls when the effect runs.
Empty array []: Runs once (on mount).
No array: Runs on every render.
[dependency]: Runs when dependencies change.
Cleanup logic: Perfect for unsubscribing to events.

3️⃣ useContext

Say goodbye to prop drilling! With useContext, you can access and share global state seamlessly across your app.
✨ What does it do?
Provides a way to pass data through the component tree without manually passing props.

💡 How to use:

const user = useContext(UserContext);

📌 Example Use Cases:
Theme management (dark/light mode).
Authentication (storing user info globally).
Sharing data like language settings across components.
These 3 hooks form the core foundation for modern React development.

💬 Which one do you use the most? Or is there another hook you can’t live without? Let me know in the replies!

💡 Level Up Your React Skills with 3 Fun & Easy Projects!

Ruturaj Jadhav — Fri, 24 Jan 2025 17:22:27 +0000

1️⃣ Counter App 🧮
A classic starter project! Build a simple app with buttons to increment, decrement, and reset a counter. Manage state seamlessly using React hooks.
👉 GitHub Repo: Counter App

2️⃣ Word & Character Counter 📝
Empower users to analyze their text! Add a text area where users can input text, and dynamically show word and character counts. Great for mastering form handling and dynamic updates.
👉 GitHub Repo: Word Calculator

3️⃣ Day/Night Theme Toggle 🌞🌙
Give your app a modern feel! Create a toggle button to switch between light and dark themes. A perfect way to practice conditional rendering and CSS integration.
👉 GitHub Repo: Theme Toggle

🎯 Why Build These?
These projects are quick, beginner-friendly, and cover essential React concepts:
✅ State Management
✅ Event Handling
✅ Dynamic Rendering

Drop a 💻 in the comments if you're building one of these or share your progress!
Happy coding, devs! 🚀

Java Essentials: Decoding JDK, JRE, and JVM.

Ruturaj Jadhav — Mon, 24 Jun 2024 13:16:24 +0000

Hey welcome 👋 today i am going to share with you about Java.As we live in modern era and the world is full of Modernization there are millions of brains that are working on AI(Artificial Intelligence) to make things automated and create new technology.But to make things automated humans use their function to make things automated 😅😂.For any kind of software technology we need languages to learn.Today, I'm excited to share my thoughts on one language that has stood the test of time - Java.
So i am going to talk about the JAVA. If you are new to programming and seeing to learn a new language Java would be better to learn as it is platform Independent and fast.Java is a versatile and powerful programming language that has been used for software development for decades.

Coffee : Did you know Java got its name from the coffee culture? It was originally developed by Sun Microsystems, and the team liked the name so much that they decided to stick with it.

Why Learn Java?

**
Java is more than just a programming language.Java is a popular, object-oriented programming language known for its platform independence, fast and for robustness as it provides Multithreading. Learning Java not only provides a solid foundation for understanding other programming languages but also opens up opportunities in various fields such as web development, mobile app development, and enterprise applications.Java is mixed combinations of libraries that provides easy operations on created program just by using objects of predefined libraries.Java is High leveled ,class based ,object oriented and multi-platform based.It is the reason the developers chooses java and make their carrers in this fields.

Worldwide renowned companies such as Netflix, Instagram, Spotify, and Google uses Java as key component.

Excited to Join and Learn: My Journey in Tech

Ruturaj Jadhav — Sat, 22 Jun 2024 16:24:26 +0000

Hi everyone!

I'm thrilled to join this vibrant community. My name is Ruturaj Jadhav, and I wanted to share a bit about my journey in tech.

I started with Java, and over time, I developed a strong interest in Data Structures and Algorithms (DSA) and Artificial Intelligence (AI). Currently, I'm focusing on enhancing my skills in these areas and exploring the exciting potential of AI.

I'm eager to learn from all of you, share my experiences, and collaborate on innovative projects. If you're working on anything interesting, I would love to learn from you all.

Looking forward to connecting with you all,

DEV Community: Ruturaj Jadhav

Understanding Spring Boot MVC

Before Starting, We Should Know:

1. Model

2. Repository

3. Service

4. Controller

5. Exception Handling

How Everything Works Together

Basic Spring Boot - Everything You Need to Know as a Beginner

What is Spring Boot?

What are Spring Dependencies?

Most Used Spring Dependencies

What is application.properties in Spring Boot?

What is MVC in Spring Boot?

Vite: The Ultimate Tool for Fast React Development

What is Vite?

Why Use Vite for React?

1. Superfast Development Server 🚀

2. Instant Hot Module Replacement (HMR) 🔄

3. Lightning-Fast Builds ⚡

4. Zero Configuration Setup 🛠️

5. Plugin Ecosystem & TypeScript Support ✅

How to Set Up React with Vite?

Step 1: Create a React App with Vite

Step 2: Navigate and Install Dependencies

Step 3: Start the Development Server

Vite vs. Create React App (CRA): Which One is Better?

Final Thoughts

Vite Documentation

🚀 Mastering Axios: Simplifying HTTP Requests

What is Axios?

Why Use Axios?

Installing Axios

Making Requests with Axios

1️⃣ GET Request

2️⃣ POST Request

3️⃣ PUT Request

4️⃣ DELETE Request

Why This is Better?

Conclusion

What Do You Think?

📚 Official Documentation

🚀 20 React Projects Every Beginner Should Build

🔥 Why Build Projects?

🌱 Beginner-Friendly Projects

🚀 Intermediate-Level Projects

⚡ Advanced React Projects

🎯 What’s Next?

Understanding React Props: A Beginner-Friendly Guide

What Are Props?

How to Use Props in React

What’s Happening Here?

Why Use Props?

Conclusion

React Hooks Every Developer Should Master

1️⃣ useState

2️⃣ useEffect

3️⃣ useContext

💡 Level Up Your React Skills with 3 Fun & Easy Projects!

Java Essentials: Decoding JDK, JRE, and JVM.

Why Learn Java?

Worldwide renowned companies such as Netflix, Instagram, Spotify, and Google uses Java as key component.

Excited to Join and Learn: My Journey in Tech

What is `application.properties` in Spring Boot?