Which two statements about the @Autowired annotation are true? (Choose two.)

Question

Options

• A@Autowired fields are injected after any config methods are invoked.
• BMultiple arguments can be injected into a single method using @Autowired.
• CBy default, if a dependency cannot be satisfied with @Autowired, Spring throws a
• DIf @Autowired is used on a class, field injection is automatically performed for all
• E@Autowired can be used to inject references into BeanPostProcessor and

• B
  96% (26)
• E
  4% (1)

Explanation

B is correct because @Autowired can be placed on a method with multiple parameters, and Spring resolves each parameter independently from the application context - e.g., @Autowired public void init(ServiceA a, ServiceB b) works fine.

C is correct because @Autowired defaults to required = true, so if Spring cannot find a matching bean, it throws an UnsatisfiedDependencyException. You must explicitly set @Autowired(required = false) to make injection optional.

A is wrong - the injection order is actually constructor → fields → methods, so @Autowired fields are injected before config methods, not after. D is wrong - @Autowired is not a class-level annotation that auto-injects all fields; each field (or constructor/method) must be individually annotated. E is wrong - BeanPostProcessor and BeanFactoryPostProcessor are instantiated very early in the Spring lifecycle, before regular beans are ready, so @Autowired injection into them is unreliable and unsupported.

Memory tip: Think "Big Crash" - @Autowired handles Big (multi-arg) methods and Crashes by default when a bean is missing. If you remember that it's strict by default and flexible with method parameters, B and C fall naturally into place.

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