1. Introduction
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## 1. Introduction

## 1.1. What this guide covers

This guide covers all aspects of Spring JavaConfig. It covers implementing and using `@Configuration` classes to configure the Spring IoC container and working with the feature set. It also covers extending and customizing JavaConfig.

### 1.1.1. Topics not covered

For the purposes of this document, a general familiarity with the core concepts of the Spring IoC container are assumed. It is beyond the scope of this document to discuss such matters at length. If the following concepts are not familiar, it is recommended that you first read Chapter 3. IoC from the core Spring Framework documentation (or that you reference its relevant sections on an as-needed basis while reading this document): inversion of control (IoC) and/or dependency injection (DI), spring-managed beans, bean scoping, autowiring, `BeanFactory`, `ApplicationContext`, `BeanFactoryPostProcessor` , `BeanPostProcessor`, Spring's initialization, destruction, and other bean lifecycle callback mechanisms.

If general aspect oriented programming (AOP) concepts are unfamiliar, or AOP with Spring and AspectJ 5's `@Aspect` style are unfamiliar, it is recommended that you first read Chapter 6. AOP from the Core Spring Framework documentation.

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Preface | Home | 1.2. What JavaConfig requires to run