Web Reference: Jan 8, 2026 · Spring calls the methods annotated with @PostConstruct only once, just after the initialization of bean properties. Keep in mind that these methods will run even if there’s nothing to initialize. Introduced in Spring 2.5, the support for these annotations offers an alternative to the lifecycle callback mechanism described in initialization callbacks and destruction callbacks. Aug 4, 2010 · In a managed bean, @PostConstruct is called after the regular Java object constructor. Why would I use @PostConstruct to initialize by bean, instead of the regular constructor itself? I got the impression that constructor injection was generally preferred to allow dependencies to be final.
YouTube Excerpt: Post-construct mode: activated.🏹#java #spring #springboot #annotations #postconstruct
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