These questions will help you understand the core concepts of the Spring context, including the difference between ApplicationContext and BeanFactory, the use of dependency injection, the management of application events and listeners, and the loading of configuration properties from external files. Additionally, you will gain insight into how the Spring context can be used to access resources in a Spring application, such as files, URLs, and databases.
Along with above point we will cover more advanced concepts in the Spring context, such as the use of the ResourceLoader, Resource pattern, and ApplicationContextAware interface. You will also learn about the use of the BeanNameAware, BeanFactoryPostProcessor, and BeanPostProcessor interfaces, as well as the @Import, @ImportResource, @Bean, @ComponentScan, @Scope, @Lazy, and @Profile annotations. Additionally, you will gain insight into how to customize the configuration, instantiation, and destruction of beans in a Spring application, as well as how to import additional configuration and automatically scan and register components in an ApplicationContext.
Difference between the ApplicationContext and BeanFactory in the Spring framework, and the use of different application context implementations such as ClassPathXmlApplicationContext, FileSystemXmlApplicationContext, and AnnotationConfigApplicationContext. You will also learn about the use of the @Configuration, @Value, @Autowired, and @Qualifier annotations, as well as the difference between constructor-based and setter-based dependency injection. Additionally, you will gain insight into the use of the @Primary and @ImportResource annotations, and how to use profiles to conditionally register beans in a Spring application.
Here are some interview questions for Spring context:
- Can you explain the difference between the ApplicationContext and BeanFactory in the Spring framework?
- Can you describe how the ApplicationContext is initialised in a Spring application?
- Can you explain the use of the @Autowired annotation in the Spring framework, and how it is used for dependency injection?
- Can you describe the use of the @Qualifier annotation in the Spring framework, and how it is used to resolve ambiguities in dependency injection?
- Can you explain the use of the @Primary annotation in the Spring framework, and how it is used to specify the primary bean in case of multiple bean definitions?
- Can you describe how the Spring context supports the management of application-level events and listeners?
- Can you explain the use of the ApplicationEvent class in the Spring framework for implementing application events and listeners?
- Can you describe the use of the @Value annotation in the Spring framework for injecting property values into a bean?
- Can you explain the use of the @Profile annotation in the Spring framework for conditionally registering beans based on the active profile?
- Can you explain the use of the @PropertySource annotation in the Spring framework for loading properties from external files?
- Can you explain the use of the Environment class in the Spring framework for accessing configuration properties?
- Can you describe how the ApplicationContext can be used to access resources in a Spring application, such as files, URLs, and databases?
- Can you explain the use of the ResourceLoader in the Spring framework for loading resources, and the different types of resources that can be loaded?
- Can you describe the use of the Resource pattern in the Spring framework for resolving resources, and the different types of Resource patterns that can be used?
- Can you explain the use of the ApplicationContextAware interface in the Spring framework for accessing the ApplicationContext from a bean?
- Can you describe the use of the BeanNameAware interface in the Spring framework for accessing the bean name from a bean?
- Can you explain the use of the BeanFactoryPostProcessor interface in the Spring framework for customizing the configuration of the BeanFactory?
- Can you describe the use of the BeanPostProcessor interface in the Spring framework for customizing the instantiation, configuration, and destruction of beans?
- Can you explain the use of the @Import annotation in the Spring framework for importing additional configuration into an ApplicationContext?
- Can you describe the use of the @ImportResource annotation in the Spring framework for importing XML configuration into an ApplicationContext?
- Can you explain the use of the @Bean annotation in the Spring framework for defining beans in a Java configuration?
- Can you describe the use of the @ComponentScan annotation in the Spring framework for automatically scanning and registering components in an ApplicationContext?
- Can you explain the use of the @Scope annotation in the Spring framework for controlling the lifecycle and scope of a bean?
- Can you describe the use of the @Lazy annotation in the Spring framework for lazily initializing a bean?
- Can you explain the use of the @Profile annotation in the Spring framework for conditionally registering beans based on the active profile?
- Can you explain the difference between ApplicationContext and BeanFactory in the Spring framework?
- Can you describe the use of the ClassPathXmlApplicationContext and FileSystemXmlApplicationContext in the Spring framework for loading XML-based configuration?
- Can you explain the use of the AnnotationConfigApplicationContext in the Spring framework for loading Java-based configuration?
- Can you describe the use of the @Configuration annotation in the Spring framework for defining a Java-based configuration class?
- Can you explain the use of the @Value annotation in the Spring framework for injecting values from a properties file into a bean?
- Can you describe the use of the @Autowired annotation in the Spring framework for automatically injecting beans into another bean?
- Can you explain the difference between constructor-based and setter-based dependency injection in the Spring framework?
- Can you explain the use of the @Qualifier annotation in the Spring framework for resolving ambiguous dependencies when multiple beans of the same type are available?
- Can you describe the use of the @Primary annotation in the Spring framework for specifying the default bean to use when multiple beans of the same type are available?
- Can you explain the use of the @Profile annotation in the Spring framework for conditionally registering beans based on the active profile?
- Can you describe the use of the @ImportResource annotation in the Spring framework for importing XML configuration into an ApplicationContext?
