Learn Java from Scratch - A Beginner's Guide - Step 05 - Exploring Spring Beans - PostConstruct and PreDestroy

The video tutorial explains the use of post construct and pre destroy annotations in Spring. It demonstrates how to create a simple class with dependencies and implement initialization logic using post construct. The tutorial also covers how to use pre destroy for cleanup tasks before a bean is removed from the application context.

Describe the initialization logic that can be executed after dependencies are wired in.

What is the purpose of the @PostConstruct annotation in Spring?

How does Spring handle the invocation of methods annotated with @PostConstruct and @PreDestroy?

What happens when a method annotated with @PostConstruct is invoked?

Explain how the @PreDestroy annotation is used in a Spring application.

What is the significance of performing cleanup in a method annotated with @PreDestroy?

In what scenarios would you use the @PostConstruct and @PreDestroy annotations?