Modern Spring From Scratch: Basics To Core Spring Mastery

Spring Core Mastery: Deep-dive into IoC, Dependency Injection, Bean Lifecycle, and Application Architecture

What you'll learn

Master Spring's core concepts: Inversion of Control (IoC) and Dependency Injection (DI) - from theory to practical implementation

Build Java applications using Spring Framework's container system to manage complex dependencies and application lifecycle

Learn dependency injection patterns: constructor, setter, and field injection - including best practices and when to use each approach

Configure Spring applications using Java-based configuration, annotations, and understand the benefits over traditional XML configuration

Understand Spring bean scopes (singleton, prototype, web scopes) and their impact on application architecture

Master bean lifecycle management including initialization order, lifecycle callbacks, and proper resource handling

Implement effective dependency resolution strategies using @Qualifier and @Primary annotations

Handle complex scenarios like circular dependencies, optional dependencies, and multiple implementation management

Create robust applications using Spring's component scanning, lazy initialization, and proper dependency management

Transition from core Java to Spring applications while understanding the key benefits and architectural improvements

Leverage Spring's powerful testing capabilities through proper dependency injection and component design

Control bean creation, initialization order, and lifecycle events using annotations like @DependsOn, @Order, and lifecycle callbacks

Build maintainable applications using Spring's standardized practices for dependency management and application structure

Requirements

Basic Java programming experience

Understanding of Object-Oriented Programming concepts

Basic knowledge of Maven

Familiarity with IDE (preferably IntelliJ)

No prior Spring knowledge required

Description

Are you tired of treating Spring as a magical black box? While most courses rush into Spring Boot, this comprehensive course takes a fundamental approach to master Spring Core - the backbone of all Spring applications.Through carefully crafted examples and practical demonstrations, you'll gain a deep understanding of how Spring actually works under the hood. Starting with basic Java applications, we'll progressively "springify" them while exploring core concepts like Inversion of Control, Dependency Injection patterns, and the Spring container system.Unlike surface-level Spring Boot courses, we delve deep into crucial concepts that interviewers love to ask about: bean lifecycle management, scope implementations, dependency resolution strategies, and component architecture. You'll learn to make informed decisions about when to use constructor injection versus setter injection, how to handle circular dependencies, and when to implement lazy initialization.What sets this course apart is its focus on building a solid foundation. Rather than memorizing annotations, you'll understand the 'why' behind Spring's design patterns and best practices. This knowledge will prove invaluable whether you're preparing for technical interviews, architecting large-scale applications, or troubleshooting complex Spring issues.By the end of this course, you'll be able to:Architect Spring applications with confidenceMake informed decisions about dependency managementHandle complex scenarios like circular dependenciesImplement proper lifecycle managementAce technical interviews about Spring internalsDon't just jump blind into Spring Boot - master Spring Core and elevate your Java development career to the next level.

Overview

Section 1: Introduction to Spring

Lecture 1 Introduction

Lecture 2 02 The application framework

Lecture 3 03 Why Spring_

Lecture 4 04 The Hello World project we will Springify

Section 2: Core Concepts of Spring

Lecture 5 05 Inversion of Control and Dependency Injection

Lecture 6 06 An analogy for dependency injection

Lecture 7 07 The benefit of dependency injection

Lecture 8 08 Creating a Spring app

Lecture 9 09 Dependency injection in action

Lecture 10 10 Understanding a Spring application

Lecture 11 11 The Spring IoC Container

Lecture 12 12 Spring Bean Registry

Section 3: Advanced Dependency Injection Techniques

Lecture 13 13 Dependency injection variants

Lecture 14 14 Setter injection

Lecture 15 15 Dependency injection steps and circular references

Lecture 16 16 Constructor vs Setter Injection - Which is better_

Lecture 17 17 Optional dependencies

Lecture 18 18 Field injection

Lecture 19 19 Best practices with optional dependencies

Section 4: Java config and Lazy beans

Lecture 20 20 Using Java config

Lecture 21 21 Constructor arguments with Java config

Lecture 22 22 More Java Config examples

Lecture 23 23 Benefits of Java config

Lecture 24 24 Creating lazy beans

Lecture 25 25 A potential problem with lazy beans

Section 5: Deep Dive into Spring Beans and Scopes

Lecture 26 26 Audience questions

Lecture 27 27 Understanding Spring Beans and Component Scanning

Lecture 28 28 Exploring Singleton and Prototype Scopes

Lecture 29 29 Diving into Web Scopes_ Request, Session, and Application

Lecture 30 30 Introduction to Autowiring by Type

Lecture 31 31 Solving Multiple Types Problem with Qualifiers

Lecture 32 32 Using Primary Annotation to Avoid Breaks

Section 6: Spring Beans Management and Lifecycle

Lecture 33 33 Understanding Spring Beans Creation Order

Lecture 34 34 Controlling the Order of Spring Beans Initialization

Lecture 35 35 Difference Between Depends On and Order Annotations

Lecture 36 36 Understanding Spring Bean Life Cycle

Lecture 37 37 Using Life Cycle Callbacks in Spring

Java developers wanting to deeply understand Spring Framework,Developers preparing for technical interviews at top companies,Programmers transitioning from core Java to Spring applications,Senior developers seeking to strengthen their Spring fundamentals,Team leads and architects making strategic decisions about Spring implementation,Developers who want to go beyond Spring Boot and understand what's happening under the hood,Anyone who has struggled with Spring's complexity and wants to master its core concepts