Refer to the exhibit. What is the id/name of the declared bean in this Java configuration class? (Choose the best answer.)

Question

Options

• AclientServiceImpl (starting with lowercase "c")
• BclientServiceImpl (starting with uppercase "C")
• CclientService (starting with lowercase "c")
• DClientService (starting with uppercase "C")

• A
  2% (1)
• B
  7% (3)
• C
  86% (37)
• D
  5% (2)

Explanation

Option C is correct because in a Spring @Configuration class, a @Bean method's name determines the bean id, not the return type or implementation class. The exhibit shows a method named clientService(), so Spring registers the bean with the id clientService (lowercase "c") by default.

Why the distractors are wrong:

• A & B (clientServiceImpl): The implementation class name is irrelevant to the bean id - Spring uses the method name, not the class being instantiated inside the method.
• D (ClientService with uppercase "C"): The return type (interface or class) also does not determine the bean name; again, it's the method name that matters.

Memory tip: Think of the @Bean method name as the bean's "nickname" in the Spring container - whatever you call the method is what you use to look up the bean. If you want a different name, you must explicitly set it with @Bean(name = "myCustomName").

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