Spring Bean Life Cycle

1. Spring instantiates the bean.
2. Spring injects values and bean references into the bean’s properties.
3. If the bean implements BeanNameAware, Spring passes the bean’s ID to the set- BeanName() method.
4. If the bean implements BeanFactoryAware, Spring calls the setBeanFactory() method, passing in the bean factory itself.
5. If the bean implements ApplicationContextAware, Spring calls the set- ApplicationContext() method, passing in a reference to the enclosing application context.
6. If the bean implements the BeanPostProcessor interface, Spring calls its post- ProcessBeforeInitialization() method.
7. If the bean implements the InitializingBean interface, Spring calls its after- PropertiesSet() method. Similarly, if the bean was declared with an initmethod, then the specified initialization method is called.
8. If the bean implements BeanPostProcessor, Spring calls its postProcess- AfterInitialization() method.
9. At this point, the bean is ready to be used by the application and remains in the application context until the application context is destroyed.
10. If the bean implements the DisposableBean interface, Spring calls its destroy() method. Likewise, if the bean was declared with a destroy-method, the specified method is called.