Why @Configuration + @Bean Overrides @Component in Spring Boot: Deep Dive and Version Differences

A detailed analysis shows that when a class is annotated with both @Configuration/@Bean and @Component, Spring creates only one bean—the one defined by @Configuration/@Bean—overriding the @Component definition, and explains how this behavior changed across Spring and Spring Boot versions.

Bean OverridingComponentConfiguration

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Why @Configuration + @Bean Overrides @Component in Spring Boot: Deep Dive and Version Differences

Selected Java Interview Questions

Apr 18, 2024 · Backend Development

Understanding @Configuration vs @Component Bean Overriding in Spring Boot 2.0.3

This article explains why a Spring Boot 2.0.3 application creates two UserManager beans when both @Configuration + @Bean and @Component are used, how the container decides which instance is injected, and how newer Spring versions allow developers to control bean‑definition overriding via configuration.

Bean OverridingComponentConfiguration

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Understanding @Configuration vs @Component Bean Overriding in Spring Boot 2.0.3

Java Architect Essentials

Jul 10, 2022 · Backend Development

Why @Configuration + @Bean Overrides @Component in Spring Boot and How Bean Definition Overriding Evolved

This article explains why, in Spring Boot 2.0.3, a bean defined with @Configuration + @Bean replaces a @Component‑annotated bean of the same type, shows how to verify which bean is instantiated, and describes the framework’s evolution—including the allowBeanDefinitionOverriding setting—that gives developers control over bean overriding behavior.

Bean OverridingComponentjava

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Why @Configuration + @Bean Overrides @Component in Spring Boot and How Bean Definition Overriding Evolved

Programmer DD

Jul 6, 2022 · Backend Development

Why Does Spring Create Two UserManager Beans? Uncovering @Configuration vs @Component Behavior

This article explains why a Spring Boot application can end up with two UserManager beans—one from @Configuration + @Bean and another from @Component—by analyzing bean definition overriding, the role of ConfigurationClassPostProcessor, and the impact of the allowBeanDefinitionOverriding setting across Spring versions.

Bean OverridingComponentConfiguration

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Why Does Spring Create Two UserManager Beans? Uncovering @Configuration vs @Component Behavior

Java Backend Technology

Mar 18, 2022 · Backend Development

Why @Configuration @Bean Overrides @Component in Spring Boot 2.0.3

An in‑depth analysis shows that in Spring Boot 2.0.3 a @Configuration class defining a @Bean can override a @Component‑annotated bean of the same type, how the Spring container registers and replaces the bean definitions, and the evolution of bean‑overriding controls in later Spring and Spring Boot releases.

Bean OverridingComponentConfiguration

0 likes · 8 min read

Why @Configuration @Bean Overrides @Component in Spring Boot 2.0.3

Why @Configuration + @Bean Overrides @Component in Spring Boot: Deep Dive and Version Differences

Understanding @Configuration vs @Component Bean Overriding in Spring Boot 2.0.3

Why @Configuration + @Bean Overrides @Component in Spring Boot and How Bean Definition Overriding Evolved

Why Does Spring Create Two UserManager Beans? Uncovering @Configuration vs @Component Behavior

Why @Configuration @Bean Overrides @Component in Spring Boot 2.0.3

Why @Configuration + @Bean Overrides @Component in Spring Boot and How Bean Definition Overriding Evolved

Why @Configuration @Bean Overrides @Component in Spring Boot 2.0.3