What are the types of IOC container in spring?
In Spring Framework, the Inversion of Control (IoC) container is responsible for managing the instantiation, configuration, and lifecycle of application objects (beans). There are two main types of IoC containers in Spring:
BeanFactory:
BeanFactory
is the simplest container in Spring. It provides the basic functionality for managing beans, including instantiation, configuration, and lifecycle management.BeanFactory
interface is the root interface for accessing the Spring IoC container.Example:
ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
MyBean myBean = (MyBean) context.getBean("myBean");
ApplicationContext:
ApplicationContext
is a more advanced and feature-rich container compared to BeanFactory
. It builds on the capabilities of BeanFactory
and adds more enterprise-specific functionality.ApplicationContext
eagerly initializes singleton beans at startup, which can lead to faster access times for those beans.ApplicationContext
, including:
ApplicationContext
for web applications, providing additional features for web applications.In summary, while both BeanFactory
and ApplicationContext
serve as IoC containers in Spring, ApplicationContext
is generally preferred due to its additional features and capabilities.