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Demystifying Spring Framework: Choosing Between XML and Annotation-based Configuration


 


Spring contain 2 IOC(Inversion of control) containers which are used to store beans(Objects).


1)Bean factory(Lazy loading)

2)Application context(Eager loading)

these both are Interfaces and the implementation classes of ApplicationContext  are 1)ClassPathXmlApplicationContext & 2)AnnotationConfigApplicationContext




⭐ClassPathXmlApplicationContext:

👉This implementation is used to load the Spring beans configuration from XML files located in the classpath.

 👉 It scans the classpath for XML configuration files and initializes the beans defined in those files.

 👉 Example:

ApplicationContext context=new ClassPathXmlApplicationContext("beans.xml");



⭐AnnotationConfigApplicationContext:

👉 This implementation is used to load Spring beans configuration from Java-based configuration classes annotated with @Configuration.

👉It scans the packages provided to it for classes annotated with @Configuration, @ComponentScan, @Bean, etc., and initializes the beans based on the configuration provided in these classes.

👉Example:

ApplicationContext context=new AnnotationConfigApplicationContext(AppConfig.class);





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