Spring Boot 4 provides a modern and efficient way to build REST APIs in Java. When combined with Spring Data JPA, Hibernate 7, and MySQL, it becomes a powerful stack for developing database-driven backend applications. In this tutorial, we will build a complete Spring Boot 4 REST API with MySQL [...]
Read MoreSpring Boot 4 and Hibernate 7 provide a powerful combination for developing modern database-driven Java applications. Spring Boot simplifies application configuration, while Hibernate handles object-relational mapping between Java objects and relational database tables. In this Spring Boot 4 + Hibernate 7 CRUD tutorial, we will build a complete CRUD application [...]
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📘 Introduction n8n is not just a tool—it’s a productivity multiplier. 🔥 Top Use Cases 1. Automated Blog Publishing Generate + publish posts automatically 2. Email Automation Send emails based on triggers 3. Social Media Posting Auto-post on Twitter, LinkedIn 4. API Integration Connect multiple APIs easily 5. Data Syncing Sync MySQL ↔ Google Sheets 6. Chatbot Backend Process messages […]
📘 Introduction Imagine writing content once and letting automation publish it automatically.With n8n, this is not just possible—it’s simple. 🧠 Workflow Overview 🔧 Step 1: Create Workflow Open n8n dashboard Click New Workflow 🔔 Step 2: Add Trigger Use:👉 Webhook Node This allows you to send content from: PHP app API AI tools 🧠 Step 3: Generate Content (Optional AI) […]
📘 Introduction Automation is transforming how developers and businesses operate. Instead of repeating manual tasks, tools like n8n allow you to build workflows that run automatically. Whether you want to send emails, update databases, or post content, n8n can do it efficiently. ⚙️ What is n8n? n8n (pronounced n-eight-n) is an open-source workflow automation tool that allows you to connect […]
1. What is Virtual DOM in React? Virtual DOM is a lightweight copy of the real DOM used by React to improve performance. How it works: React creates a virtual DOM in memory Compares it with previous version (diffing) Updates only changed parts in real DOM Advantage: Faster updates Efficient rendering Improved performance 2. Explain Props in React with example. […]
1. What is Client-Server Architecture? Explain with example. Client-Server Architecture is a computing model where multiple clients request services from a centralized server. Client: A user interface such as a web browser Server: A system that processes requests and returns responses Example: When you type a URL in your browser: The browser (client) sends a request to the server The […]
This post provides solutions to a set of important Django practical questions based on template rendering, loops, filters, URL parameters, template inheritance, static files, and form handling. These programs are useful for lab work, practical exams, assignments, and viva preparation. At the end, there is a set of 40 viva questions for discussion and self-practice. Contents Display the sum and […]
🔷 1. React Counter App (Functional Component) ✅ Question: Create a counter app using functional components in React. 💻 Solution: import React, { useState } from “react”;function Counter() { const [count, setCount] = useState(0); return ( <div style={{ textAlign: “center” }}> <h2>Counter App</h2> <h3>{count}</h3> <button onClick={() => setCount(count + 1)}>Increment</button> <button onClick={() => setCount(count – 1)}>Decrement</button> </div> );}export default Counter; […]
🎯 Objective To create a custom 500 error page for server-side errors. ❗ What is 500 Error? 500 error occurs when: Server crashes Code error occurs Internal server issue 📄 Step 1: Create Template templates/500.html <!DOCTYPE html><html><head> <title>Server Error</title></head><body> <h1>500 Error</h1> <p>Something went wrong. Please try again later.</p></body></html> ⚙️ Step 2: Configure Settings # settings.pyDEBUG = FalseALLOWED_HOSTS = [‘*’] 🔗 […]
🎯 Objective To create a custom 404 error page when a user visits a non-existing URL. ❗ What is 404 Error? 404 error occurs when: Page not found Invalid URL entered 📄 Step 1: Create Template Create file: templates/404.html <!DOCTYPE html><html><head> <title>Page Not Found</title></head><body> <h1>404 Error</h1> <p>Oops! Page not found.</p> <a href=”/”>Go to Home</a></body></html> ⚙️ Step 2: Configure Settings # […]
🎯 Objective To implement Create, Read, Update, Delete (CRUD) operations using Django Class-Based Views (CBVs) for better structure and code reusability. 📌 What are Class-Based Views? Class-Based Views (CBVs) are an alternative to function-based views. They provide: Reusable code Less duplication Built-in functionality for CRUD 📦 Step 1: Model (Student) # models.pyfrom django.db import modelsclass Student(models.Model): name = models.CharField(max_length=100) age […]