Snippet

Lifecycle Management with @PostConstruct

The @PostConstruct annotation is used on a method that needs to be executed after dependency injection is done to perform any initialization. This is part of the Spring bean lifecycle.

snippet.java

java

@Component
public class DataSeeder {
    @PostConstruct
    public void init() {
        System.out.println("Database seeding started after bean construction.");
    }
}

spring

Breakdown

@PostConstruct

Indicates that the method should run immediately after the bean is initialized by Spring.

public void init()

The method must have a void return type and take no arguments.

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Lifecycle Management with @PostConstruct

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