beanlifecycle

Bean lifecycle refers to the series of states a bean object goes through from its creation to its destruction within a framework, most commonly associated with Java EE and Spring frameworks. The lifecycle typically begins with instantiation, where the bean object is created. Following instantiation, dependency injection occurs, where the framework injects any required dependencies into the bean. After dependencies are set, initialization methods are invoked. These can include methods annotated with lifecycle annotations or methods specified in configuration. Some frameworks also support post-processing of beans before they are made available for use. Once the bean is no longer needed and the application or container is shutting down, destruction callbacks are executed. These methods are designed for cleanup operations, such as releasing resources. Understanding the bean lifecycle is crucial for managing application state, handling resource allocation and deallocation, and implementing custom logic at specific stages of a bean's existence. Different frameworks offer various mechanisms and hooks to interact with and customize the bean lifecycle.