I'm confident that A and B are the correct answers. The @Qualifier annotation can be used on the class, and the @Autowired annotation can be used on either fields or setter methods.
I think the key is using the @Qualifier annotation to specify which bean should be injected. The @Autowired annotation is optional, but it's a good practice to use it as well. I'd go with A and D.
Hmm, I'm pretty sure the correct answers are B and D. The @Qualifier and @Autowired annotations need to be used together, and they can be used on both setter methods and fields.
I'm a bit confused on this one. I know we need to use the @Qualifier and @Autowired annotations, but I'm not sure if we can use them together on a field or if they need to be separate. I'll have to review my notes.
I think the answer is A and D. The @Qualifier annotation helps resolve ambiguity when there are multiple beans of the same type, and it can be used with both fields and setter methods.
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