Spring Framework Master Class - Java Spring the Modern Way - Step 13 - Autowiring in Depth - @Qualifier Annotation

The video tutorial explores different methods for resolving multiple candidates in auto wiring, including using @Primary, @Qualifier, and auto wiring by name. It explains the scenarios where each method is most effective, with @Primary being ideal for a single preferred algorithm, while @Qualifier and auto wiring by name are suitable for situations requiring different algorithms. The tutorial emphasizes the importance of understanding these methods to efficiently resolve dependencies and encourages viewers to experiment with them for deeper comprehension.

What is one method to resolve multiple candidates for auto wiring in Spring?

• Using '@Inject'

• Using '@Primary'

• Using '@Component'

• Using '@Override'

How can you specify which algorithm to use when multiple candidates are available?

• By using '@Qualifier'

• By using '@Repository'

• By using '@Autowired'

• By using '@Service'

What is the advantage of using '@Qualifier' in Spring?

• It allows for dynamic method invocation

• It enables the use of multiple data sources

• It automatically configures the application context

• It specifies which bean to use when multiple candidates exist

When is it recommended to use '@Primary' for auto wiring?

• When you want to avoid using '@Qualifier'

• When you need to inject dependencies manually

• When there is a clear favorite algorithm

• When you want to use multiple algorithms simultaneously

Which method is preferred for clarity when resolving multiple candidates?

• Using '@Primary'

• Using '@Qualifier'

• Using '@Autowired'

• Using auto wiring by name