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What is Spring context?
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Answer from AI
The Spring context (ApplicationContext) is the central interface in the Spring Framework, representing a container for objects (beans). It is responsible for:
- Creating and configuring beans: Manages the lifecycle of objects, creating, initializing, and managing their dependencies.
- Dependency Injection (DI): Injects dependencies between beans.
- Managing bean lifecycle: Calls initialization and destruction methods.
- Supporting various configuration sources: XML, annotations, JavaConfig.
- Internationalization: Support for multilingual applications.
- Event propagation: Ability to publish and subscribe to custom events.
ApplicationContext is a descendant of BeanFactory, providing more advanced features.
Examples of implementations:
ClassPathXmlApplicationContext: Loads configuration from XML files in the classpath.FileSystemXmlApplicationContext: Loads configuration from XML files in the filesystem.AnnotationConfigApplicationContext: Loads configuration from Java classes with annotations.WebApplicationContext: Used in web applications, extends ApplicationContext for working with servlet contexts.