Use Javax Inject in the Java library for dependencies management

Use javax.inject in the java library for dependency management Introduction: In modern software development, dependency management is crucial.It allows us to effectively manage the dependencies between components and modules of the application.Javax.inject is a package in the Java standard library. It provides a dependent injection mechanism to solve the dependent relationship between components.This article will introduce how to use javax.inject in the Java library for dependence management. Dependency inject is a design pattern that realizes loosening by moving the dependency from inside the component to the outside.In dependency injection, components do not need to be responsible for creating or managing objects it depends on, but entrust the dependent relationship to external containers.This can make the components more flexible and recipient. The steps of using javax.inject for dependence management are as follows: 1. Add javax.inject dependencies: To use Javax.inject in the Java project, we need to add it to dependence.The following dependencies can be added to the configuration file of the construction tool (such as Maven or Gradle): Maven: <dependency> <groupId>javax.inject</groupId> <artifactId>javax.inject</artifactId> <version>1</version> </dependency> Gradle: groovy compile 'javax.inject:javax.inject:1' 2. Definition dependency: In the Java library, javax.inject annotations can be used to define dependency relationships.Common annotations include@inject,@named and @SINGLETON. -@Inject annotation is used to mark the member variables, construct functions or methods that need to be injected. -@Named annotations are used to mark a dependencies and name them in order to distinguish the dependencies of different types of different types. -@Singleton annotation is used to mark a dependencies as a single case, which means that it will only create an instance in the entire application. The example code is as follows: import javax.inject.Inject; import javax.inject.Named; public class ExampleClass { @Inject private Dependency dependency; @Inject @Named("namedDependency") private Dependency namedDependency; private Dependency constructorDependency; @Inject public ExampleClass(Dependency constructorDependency) { this.constructorDependency = constructorDependency; } @Inject public void setConstructorDependency(Dependency constructorDependency) { this.constructorDependency = constructorDependency; } } 3. Configuration dependency injection container: In the Java class library, a dependency injection container is needed to manage and analyze the dependence relationship.Commonly used dependent injection containers include Spring Framework and Google Guice.Among these containers, the dependencies of the Javax.inject Note mark can be used for dependency injection. 4. Run application: After completing the above steps, you can run the Java library and test whether the dependencies are injected normally. Summarize: The use of javax.inject in the Java library can easily manage dependency management.By using@Inject,@Named, and @SINGLETON, you can define the dependency relationship between and management components.At the same time, the use of dependent injection containers can entrust the creation and analysis of the dependent relationship to the external container, which improves the replication and scalability of the component. It is hoped that this article will help to learn how to use Javax.inject in the Java library for dependence management.If you have other questions, please ask at any time.