Master Hibernate and JPA with Spring Boot in 100 Steps - Step 6 - Dynamic auto wiring and Troubleshooting - @Primary

What happens when two components of the same type are present in a Spring application?

• Spring throws an error and stops the application.

• Spring randomly selects one of the components.

• Spring uses the @Primary annotation to determine which component to use.

• Spring ignores both components.

How can you resolve a conflict when multiple beans of the same type are found?

• By using the @Qualifier annotation.

• By using the @Autowired annotation.

• By using the @Primary annotation.

• By using the @Component annotation.

What is a common issue when Spring cannot find a required bean?

• The bean is annotated with @Qualifier.

• The bean is annotated with @Autowired.

• The bean is annotated with @Primary.

• The bean is not annotated with @Component.

What error does Spring throw when no beans are found for a required type?

• BeanConflictException

• BeanNotFoundException

• NoSuchBeanDefinitionException

• BeanCreationException

Which combination of annotations is crucial for troubleshooting bean-related issues in Spring?

• @Qualifier, @Value, @PostConstruct

• @Bean, @Configuration, @Scope

• @Service, @Repository, @Controller

• @Component, @Autowired, @Primary