Learn Java from Scratch - A Beginner's Guide - Step 11 - Quick Review - Important Spring Framework Annotations

The video tutorial provides an overview of important Spring annotations, including Add Configuration, Add Component, Add Service, Add Controller, and Add Repository. It explains component scanning, bean preferences using Add Primary and Add Qualifier, and the significance of lazy initialization and scope annotations like prototype and Singleton. The tutorial also covers lifecycle annotations such as Add PostConstruct and Add PreDestroy, and introduces CDI annotations like Add Named and Add Inject. The goal is to help learners understand how to effectively use these annotations in Spring applications.

What does the Add Configuration annotation signify in a Spring application?

• It is used to scan packages for components.

• It indicates that a class declares one or more Add Bean methods.

• It defines a method to be executed after dependency injection.

• It marks a class as a Spring component.

What is the purpose of the Add Component Scan annotation?

• To specify packages to scan for components.

• To define a method to be executed after dependency injection.

• To mark a class as a Spring component.

• To indicate a class has business logic.

Which annotation is a specialization of Add Component indicating a class has business logic?

• Add Service

• Add Repository

• Add Configuration

• Add Controller

What is the role of the Add Primary annotation?

• To specify packages to scan for components.

• To define a method to be executed before a bean is destroyed.

• To mark a class as a Spring component.

• To give a bean preference when multiple candidates are available.

How does the Add Qualifier annotation differ from Add Primary?

• Add Qualifier is used for lazy initialization.

• Add Qualifier is more specific than Add Primary.

• Add Qualifier is used for scanning packages.

• Add Qualifier marks a class as a Spring component.

What does the Add Lazy annotation do?

• It marks a class as a Spring component.

• It defines a method to be executed after dependency injection.

• It specifies packages to scan for components.

• It allows beans to be lazily initialized.

What is the default scope of a Spring bean if no scope is specified?

• Singleton

• Session

• Request

• Prototype