Spring Bean Life Cycle Methods: Essential Guide for Interviews

Overview

• @PostConstruct: Use to initialize the bean after all properties are set.
• afterPropertiesSet(): Called after all bean properties are set; used in InitializingBean interface for initialization logic.
• @PreDestroy: Use to define cleanup logic before the bean is destroyed.
• destroy(): Executes custom destruction logic when the bean implements DisposableBean interface.

Spring Bean Life Cycle Methods flow

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Purpose

• Understand the Spring Bean Life Cycle.
• Know the key methods involved in the bean lifecycle.
• Apply these concepts with a coding example using Spring Boot.