Master Spring Boot Lifecycle: Init & Destroy Callbacks Explained

This article explains Spring Boot’s bean lifecycle callbacks, covering InitializingBean and DisposableBean interfaces, @PostConstruct and @PreDestroy annotations, initMethod and destroyMethod configurations, as well as alternative approaches like SmartInitializingSingleton, ContextRefreshedEvent, and AutoCloseable, with code examples and execution order details.

DisposableBeanInitializingBeanLifecycle

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Master Spring Boot Lifecycle: Init & Destroy Callbacks Explained

Xuanwu Backend Tech Stack

Jul 1, 2025 · Backend Development

Mastering Spring Bean Initialization: @PostConstruct, InitializingBean, and init‑method Explained

This article explains the three Spring bean initialization callbacks—@PostConstruct, InitializingBean, and init‑method—their fixed execution order, underlying processing mechanisms, code examples, and guidance on choosing the most suitable approach for different development scenarios.

Bean InitializationInitializingBeanJava backend

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Mastering Spring Bean Initialization: @PostConstruct, InitializingBean, and init‑method Explained

Top Architect

May 25, 2021 · Backend Development

Spring Boot Resource Initialization: CommandLineRunner, ApplicationRunner, @Order, @PostConstruct, InitializingBean, and ApplicationListener

This article explains several Spring Boot techniques for initializing resources at application startup, including CommandLineRunner, ApplicationRunner, @Order, @PostConstruct, InitializingBean, and ApplicationListener, and provides code examples and usage guidelines for each method.

ApplicationListenerApplicationRunnerCommandLineRunner

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Spring Boot Resource Initialization: CommandLineRunner, ApplicationRunner, @Order, @PostConstruct, InitializingBean, and ApplicationListener

Java Architecture Diary

Jun 5, 2020 · Backend Development

Master Spring Bean Lifecycle: BeanPostProcessor, @PostConstruct & InitializingBean

This article explains how Spring's bean lifecycle can be customized using BeanPostProcessor, @PostConstruct, InitializingBean, and initMethod, providing code examples, execution logs, and best‑practice scenarios for extending bean creation and initialization in backend Java applications.

BeanPostProcessorInitializingBeanPostConstruct

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Master Spring Bean Lifecycle: BeanPostProcessor, @PostConstruct & InitializingBean