Snippet

Running Code at Startup

Implementing CommandLineRunner allows you to execute code immediately after the Spring application context is loaded and the app starts.

snippet.java

java

@Component
public class StartupApp implements CommandLineRunner {
    @Override
    public void run(String... args) {
        System.out.println("Application has started!");
    }
}

spring

Breakdown

implements CommandLineRunner

An interface used to indicate that a bean should run when it is contained within a SpringApplication.

run(String... args)

The method where your custom startup logic is placed.

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Running Code at Startup

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