Detailed explanation of component life cycle management in the Picocontainer Core framework

Picocontainer Core is a lightweight dependency injection (DI) framework to manage the life cycle of component in the application.By using Picocontainer Core, it is easy to entrust the operation of object creation, dependency injection and destruction to the framework to simplify the decoupling and management between components. Picocontainer Core provides the following ways to manage the life cycle of the component: 1. Constructor Inject: Picocontainer Core creates an instantiated object by constructing a function injection, and automatically analyzes and injected its dependence.By passing the dependency item as a parameter to the constructor, the Picocontainer Core ensures that the object will get all the dependent items it needs when instantiated. public class MyComponent { private final Dependency dependency; public MyComponent(Dependency dependency) { this.dependency = dependency; } //... } 2. Setter method injection (Setter Method Injection): In addition to the constructor injection, Picocontainer Core also supports the use of the Setter method injection dependency item.By defining the public setter method in the component class, and registering the dependencies in Picocontainer Core, the framework will automatically call the corresponding setter method to inject the dependencies. public class MyComponent { private Dependency dependency; public void setDependency(Dependency dependency) { this.dependency = dependency; } //... } 3. Lifecycle Management: Picocontainer Core also provides the life cycle management function of the component.By implementing the LifeCycle interface and registering components in Picocontainer Core, the process of initialization and destruction of components can be controlled.When the application starts, the Picocontainer Core will automatically initialize the registered component and call the destruction method when the application is closed. public class MyComponent implements Lifecycle { //... @Override public void start() { // Initialize operation } @Override public void stop() { // Destruction operation } } 4. Custom Component Instantiation: Picocontainer Core provides an extension mechanism to allow developers to customize component instantiated strategies.By implementing the ComponentFactory interface and registering in the Picocontainer Core, the creation process of the component can be controlled.For example, developers can customize object pools to manage components instantiated and reused. public class MyComponentFactory implements ComponentFactory { //... @Override public Object createInstance(Type type) { // Customized object creation logic } } To sum up, the Picocontainer Core provides a variety of mechanisms to manage the life cycle of the component, thereby simplifying the dependent injection and coupling between components.Developers can solve the dependencies between components by constructing function injection and setter method, and initialize and destroy the Lifecycle interface.In addition, Picocontainer Core also allows developers to control the instantiated process of components by customizing componentFactory. The above is a detailed explanation of component life cycle management in the Picocontainer Core framework. I hope it will be helpful to you!