Spring Boot Starters, Auto-Configuration, and Dependency Injection[Java Spring Boot Mastery Series – Part 2]

Spring Boot Starters, Auto-Configuration, and Dependency Injection[Java Spring Boot Mastery Series – Part 2]

🎯 Objective This part explores how Spring Boot simplifies setup using Starters, the magic behind Auto-Configuration, and how Dependency Injection helps manage object lifecycle. 🚀 Spring Boot Starters Spring Boot starters are a set of convenient dependency descriptors you can include in your application. Instead of manually specifying each dependency,…

Getting Started with Spring Boot [Java Spring Boot Mastery Series – Part 1]

Getting Started with Spring Boot [Java Spring Boot Mastery Series – Part 1]

🎯 Objective Learn how to: 🛠️ Step 1: Project Setup (Using Spring Initializr) Go to https://start.spring.io and choose: Click Generate to download the project and extract it locally. 📁 Step 2: Directory Structure src/main/java/com/example/demo├── controller # REST endpoints├── service # Business logic├── repository # Data access layer├── model # JPA…

Java Spring Boot Mastery Series [Version : 2025-26]

Java Spring Boot Mastery Series [Version : 2025-26]

Welcome to the Spring Boot Mastery Series – a complete, advanced-level tutorial collection curated for experienced Java developers and architects. Whether you’re migrating legacy apps, building new microservices, or preparing for enterprise-level interviews, this guide is designed to cover every key concept with real-world implementation. 📚 Series Overview This tutorial…

Top 100 spring questions and answers, crack any java spring interview

Top 100 spring questions and answers, crack any java spring interview

1. What is Spring Framework? Definition:Spring is an open-source, lightweight Java framework designed to simplify enterprise application development. It promotes loose coupling through Dependency Injection (DI) and provides comprehensive infrastructure support for developing Java applications. Features: 2. What is Inversion of Control (IoC)? Definition:IoC is a design principle where the…

Spring Boot vs Spring Framework – A Complete Comparison

Spring Boot vs Spring Framework – A Complete Comparison

If you’re working in Java, you’ve probably come across both Spring Framework and Spring Boot. While they’re closely related, they serve different purposes. If you’re preparing for a job interview or starting a new project, it’s essential to understand when to use which. In this guide, we’ll break down Spring…

@Async, @ControllerAdvice Global Exception Handling, MockMvc, Cors configuration, AOP Logging

@Async, @ControllerAdvice Global Exception Handling, MockMvc, Cors configuration, AOP Logging

✅ 1. @Async – Asynchronous Execution 🔹 Code: @Configuration@EnableAsyncpublic class AppConfig {} 🔸 Explanation: 🔹 Service: @Servicepublic class EmailService { @Async public void sendEmail(String to) { System.out.println(“Sending email to: ” + to); try { Thread.sleep(3000); // simulate delay } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(“Email sent to: ” +…

SpEL (Spring Expression Language) in Spring

SpEL (Spring Expression Language) in Spring

🔹 1. SpEL (Spring Expression Language) ✅ Definition: SpEL is a powerful expression language used in Spring for querying and manipulating object graphs at runtime. It’s commonly used inside @Value, XML, or annotation-based configuration to dynamically inject values. ✅ Basic Example: @Componentpublic class MyComponent { @Value(“#{2 * 2}”) private int…

Complete Spring Framework 4 Tutorial with Examples and Interview Tips

Complete Spring Framework 4 Tutorial with Examples and Interview Tips

✅ 1. What is Spring Framework? Spring is a powerful, lightweight framework for building Java enterprise applications. It promotes loose coupling through Dependency Injection (DI) and offers powerful integrations for web apps, data access, security, AOP, and more. 🔑 Core Features: ✅ 2. Dependency Injection (DI) in Spring ➤ What…

Develop & Consume Rest API using Java Spring Boot, JWT, MySql and JPA

Java is one of the popular and secure programming language for server side application development. Most of the companies specially Big enterprises like bank, financial institutions and others. If you compare the application developed in all languages. Java is on top with 65% Developers also like to work in Java…