Spring - IoC Container - GeeksforGeeks

Feature	BeanFactory	ApplicationContext
Annotation Support	No	Yes
Bean Instantiation/Wiring	Yes	Yes
Internationalization	No	Yes
Enterprise Services	No	Yes
ApplicationEvent Publication	No	Yes
Automatic BeanPostProcessor Registration	No	Yes
Loading Mechanism	Lazy Loading	Aggressive Loading
Automatic BeanFactoryPostProcessor Registration	No	Yes

Spring - Understanding Inversion of Control with Example

Spring IoC (Inversion of Control) Container is the core of the Spring Framework. It creates objects (beans), configures them, injects dependencies, and manages their life cycles. The container uses Dependency Injection (DI) to manage application components. It retrieves object configuration from XML

7 min read

Spring - BeanFactory

The first and foremost thing when we talk about Spring is dependency injection which is possible because Spring is a container and behaves as a factory of Beans. Just like the BeanFactory interface is the simplest container providing an advanced configuration mechanism to instantiate, configure, and

4 min read

Spring - ApplicationContext

ApplicationContext belongs to the Spring framework. Spring IoC container is responsible for instantiating, wiring, configuring, and managing the entire life cycle of beans or objects. BeanFactory and ApplicationContext represent the Spring IoC Containers. ApplicationContext is the sub-interface of B

5 min read

Spring - Difference Between BeanFactory and ApplicationContext

Spring is one of the most popular Java EE frameworks. It is an open-source lightweight framework that allows Java EE developers to build simple, reliable, and scalable enterprise applications. It provides Aspect-oriented programming. It provides support for all generic and middleware services and ma

9 min read

Spring Dependency Injection with Example

Dependency Injection is the main functionality provided by Spring IOC(Inversion of Control). The Spring-Core module is responsible for injecting dependencies through either Constructor or Setter methods. The design principle of Inversion of Control emphasizes keeping the Java classes independent of

7 min read

Spring - Difference Between Inversion of Control and Dependency Injection

Understanding the difference between Inversion of Control (IoC) and Dependency Injection (DI) is very important for mastering the Spring framework. Both concepts are closely related, they serve different purposes in the context of Spring. The main difference between IoC and DI is listed below:Invers

3 min read

Spring - Injecting Objects By Constructor Injection

Spring IoC (Inversion of Control) Container is the core of Spring Framework. It creates the objects, configures and assembles their dependencies, and manages their entire life cycle. The Container uses Dependency Injection (DI) to manage the components that make up the application. It gets the infor

5 min read

Spring - Setter Injection with Map

Spring Framework is a powerful tool for Java developers because it offers features like Dependency Injection (DI) to simplify application development. One of the key features of Spring is Setter Injection, which allows us to inject dependencies into our beans using setter methods. In this article, w

5 min read

Spring - Dependency Injection with Factory Method

Spring framework provides Dependency Injection to remove the conventional dependency relationship between objects. To inject dependencies using the factory method, we will use two attributes factory-method and factory-bean of bean elements.Note: Factory methods are those methods that return the inst

8 min read

Spring - Dependency Injection by Setter Method

Dependency Injection is one of the core features of the Spring Framework Inversion of Control (IOC) container. It reduces the need for classes to create their own objects by allowing the Spring IOC container to do it for them. This approach makes the code more flexible, easier to test, and simpler t

5 min read

Spring - Setter Injection with Non-String Map

In Spring Framework, Dependency Injection (DI) is a core concept that allows objects to be injected into one another, reducing tight coupling. Setter-based Dependency Injection (SDI) is a technique where dependencies are injected through setter methods. In this article, we will explore how to perfor

4 min read

Spring - Constructor Injection with Non-String Map

Constructor Injection is a widely used technique in the Spring Framework for injecting dependencies through a class constructor. This method ensures that all required dependencies are provided at the time of object creation, making the class immutable and easy to test. In this article, we will explo

4 min read

Spring - Constructor Injection with Map

In the Constructor Injection, the dependency injection will be injected with the help of constructors. Now to set the dependency injection as constructor dependency injection(CDI) in bean, it is done through the bean-configuration file For this, the property to be set with the constructor dependency

3 min read

Spring - Setter Injection with Dependent Object

Dependency Injection is the main functionality provided by Spring IOC(Inversion of Control). The Spring-Core module is responsible for injecting dependencies through either Constructor or Setter methods. In Setter Dependency Injection(SDI) the dependency will be injected with the help of setters and

3 min read

Spring - Constructor Injection with Dependent Object

In the constructor injection, the dependency injection will be injected with the help of constructors. Now to set the dependency injection as constructor dependency injection(CDI) in bean, it is done through the bean-configuration file For this, the property to be set with the constructor dependency

3 min read

Spring - Setter Injection with Collection

Dependency Injection is the main functionality provided by Spring IOC(Inversion of Control). The Spring-Core module is responsible for injecting dependencies through either Constructor or Setter methods. In Setter Dependency Injection(SDI) the dependency will be injected with the help of setters and

2 min read

Spring - Setter Injection with Non-String Collection

Dependency Injection is the main functionality provided by Spring IOC(Inversion of Control). The Spring-Core module is responsible for injecting dependencies through either Constructor or Setter methods. In Setter Dependency Injection(SDI) the dependency will be injected with the help of setters and

3 min read

Spring - Constructor Injection with Collection

In the constructor injection, the dependency injection will be injected with the help of constructors. Now to set the dependency injection as constructor dependency injection(CDI) in bean, it is done through the bean-configuration file For this, the property to be set with the constructor dependency

2 min read

Spring - Injecting Objects by Setter Injection

Spring IoC (Inversion of Control) Container is the core of Spring Framework. It creates the objects, configures and assembles their dependencies, manages their entire life cycle. The Container uses Dependency Injection(DI) to manage the components that make up the application. It gets the informatio

5 min read

Spring - Injecting Literal Values By Setter Injection

Spring IoC (Inversion of Control) Container is the core of Spring Framework. It creates the objects, configures and assembles their dependencies, manages their entire life cycle. The Container uses Dependency Injection(DI) to manage the components that make up the application. It gets the informatio

4 min read

Spring - Injecting Literal Values By Constructor Injection

Spring IoC (Inversion of Control) Container is the core of Spring Framework. It creates the objects, configures and assembles their dependencies, manages their entire life cycle. The Container uses Dependency Injection(DI) to manage the components that make up the application. It gets the informatio

5 min read

Bean Life Cycle in Java Spring

The lifecycle of a bean in Spring refers to the sequence of events that occur from the moment a bean is instantiated until it is destroyed. Understanding this lifecycle is important for managing resources effectively and ensuring that beans are properly initialized and cleaned up.Bean life cycle is

7 min read

Custom Bean Scope in Spring

In Spring, Objects are managed by the Spring IOC(Inversion of Control) container, and their lifecycle is determined by the scope. Spring provides two standard scopes, which are listed below:Singleton Scope: One instance of the bean is created per Spring IOC Container. This is the default scope.Proto

4 min read

How to Create a Spring Bean in 3 Different Ways?

Spring is one of the most popular Java EE frameworks. It is an open-source lightweight framework that allows Java EE 7 developers to build simple, reliable, and scalable enterprise applications. This framework mainly focuses on providing various ways to help you manage your business objects. It made

5 min read

Spring - IoC Container

The Spring framework is a powerful framework for building Java applications. It can be considered a collection of sub-frameworks, also referred to as layers, such as Spring AOP, Spring ORM, Spring Web Flow, and Spring Web MVC. We can use any of these modules separately while constructing a Web appli

2 min read

Spring - Autowiring

Autowiring in the Spring framework can inject dependencies automatically. The Spring container detects those dependencies specified in the configuration file and the relationship between the beans. This is referred to as Autowiring in Spring. To enable Autowiring in the Spring application we should

4 min read

Singleton and Prototype Bean Scopes in Java Spring

Bean Scopes refer to the lifecycle of a Bean, which means when the object of a Bean is instantiated, how long it lives, and how many objects are created for that Bean throughout its lifetime. Basically, it controls the instance creation of the bean, and it is managed by the Spring container.Bean Sco

8 min read

How to Configure Dispatcher Servlet in web.xml File?

In a Spring-based web application, the DispatcherServlet acts as the Front Controller. The Front Controller is responsible for handling all incoming requests and also figuring out which part of the application should handle it.What is a Front Controller?A Front Controller is a design pattern, which

3 min read

Spring - Configure Dispatcher Servlet in Three Different Ways

DispatcherServlet acts as the Front Controller for Spring-based web applications. So now what is Front Controller? So it is pretty simple. Any request is going to come into our website the front controller is going to stand in front and is going to accept all the requests and once the front controll

8 min read

How to Configure Dispatcher Servlet in Just Two Lines of Code in Spring?

DispatcherServlet acts as the Front Controller for Spring-based web applications. So now what is Front Controller? So it is pretty simple. Any request is going to come into our website the front controller is going to stand in front and is going to accept all the requests and once the front controll

6 min read

Spring - When to Use Factory Design Pattern Instead of Dependency Injection

Prerequisite: Factory Pattern vs Dependency Injection Factory Design Pattern and Dependency Injection Design both are used to define the interface-driven programs in order to create objects. Dependency Injection is used to obtain a loosely coupled design, whereas the Factory Pattern adds coupling, b

2 min read

How to Create a Simple Spring Boot Application?

Spring Boot is one of the most popular frameworks for building Java-based web applications. It is used because it simplifies the development process by providing default configurations and also reduces boilerplate code. In this article, we will cover the steps to create a simple Spring Boot applicat

2 min read

Spring - init() and destroy() Methods with Example

During the Spring Application Development, sometimes when the spring beans are created developers are required to execute the initialization operations and the cleanup operations before the bean is destroyed. In the spring framework, we can use the init-method and the destroy-method labels in the be

13 min read

Spring WebApplicationInitializer with Example

In Spring, WebApplicationInitializer is an Interface and it is Servlet 3.0+ implementation to configure ServletContext programmatically in comparison to the traditional way to do this using the web.xml file. This interface is used for booting Spring web applications. WebApplicationInitializer regist

5 min read

Spring - Project Modules

Every Spring Boot project has several modules and each module match some application layer (service layer, repository layer, web layer, model, etc..). In this article, let us see a maven-driven project as an example for showing Project Modules. Example pom.xml (overall project level) XML <?xml ve

6 min read

Spring - Remoting by HTTP Invoker

HTTP Invoker is a remote communication mechanism in the Spring framework that enables remote communication between Java objects over HTTP. It allows Java objects to invoke methods on remote Java objects, just as if they were local objects. In this article, we will learn how to implement Spring remot

3 min read

Spring - Expression Language (SpEL)

Spring Expression Language (SpEL) is a feature of the Spring framework that enables querying and manipulating object graphs at runtime. It can be used in both XML and annotation-based configurations, offering flexibility for developers. Dynamic Expression Evaluation: SpEL allows evaluation of expres

6 min read

Spring - Variable in SpEL

EvaluationContext interface is implemented by the StandardEvaluationContext class. To resolve properties or methods, it employs a reflection technique. The method setVariable on the StandardEvaluationContext can be used to set a variable. Using the notation #variableName, we may utilize this variabl

3 min read

What is Ambiguous Mapping in Spring?

Spring is a loosely coupled framework of java meaning all the objects are not dependent on each other and can be easily managed & modified. Basic architecture in every spring project involves the use of controllers or REST Controllers, any build tool like maven, gradle, or groove, an RDBMS, Serv

5 min read

Spring - Add New Query Parameters in GET Call Through Configurations

When a client wants to adopt the API sometimes the existing query parameters may not be sufficient to get the resources from the data store. New clients can't onboard until the API providers add support for new query parameter changes to the production environment. To address this problem below is a

4 min read

Spring - Integrate HornetQ

Spring Integration is a framework for building enterprise integration solutions. It provides a set of components that can be used to build a wide range of integration solutions. HornetQ is an open-source message-oriented middleware that can be used as a messaging provider for Spring Integration. Spr

6 min read

Remoting in Spring Framework

Spring has integration classes for remoting support that use a variety of technologies. The Spring framework simplifies the development of remote-enabled services. It saves a significant amount of code by having its own API. The remote support simplifies the building of remote-enabled services, whic

3 min read

Spring - Application Events

Spring is a popular Java-based framework that helps developers create enterprise applications quickly and efficiently. One of the most powerful features of the Spring framework is its Application Events feature, which allows developers to create custom event-driven applications. What are Spring Appl

5 min read

Spring c-namespace with Example

Prerequisite: How to Create a Spring Bean in 3 Different Ways? The Spring c-namespace will be discussed in this article. We are going to assume you're familiar with how to create a Bean within an XML configuration file. The first question that comes to mind is what Spring c-namespace is and how it w

3 min read

Parse Nested User-Defined Functions using Spring Expression Language (SpEL)

In dynamic programming, evaluating complex expressions that uses nested user-defined functions can be very challenging. In Java, we can use Spring Expression Language (SpEL) to parse and execute such expressions at runtime. In this article, we will learn how to parse and execute nested user-defined

4 min read

Spring - AbstractRoutingDataSource

In this article, we'll look at Spring's AbstractRoutingDatasource as an abstract DataSource implementation that dynamically determines the actual DataSource based on the current context. Now this question will come to our mind when we may need it i.e. when we should go for AbstractRoutingDatasource

6 min read

Circular Dependencies in Spring

In this article, we will discuss one of the most important concepts of Spring i.e. Circular dependency. Here we will understand what is circular dependency in Spring and how we can resolve circular dependency issues in Spring. What is Circular Dependency? In software engineering, a circular dependen

5 min read

Spring - ResourceLoaderAware with Example

Prerequisite: Introduction to Spring Framework In this article, we will discuss the various ways through which we can load resources or files (e.g. text files, XML files, properties files, etc.) into the Spring application context. These resources or files may be present at different locations like

4 min read

Spring Framework Standalone Collections

Spring Framework allows to inject of collection objects into a bean through constructor dependency injection or setter dependency injection using <list>,<map>,<set>, etc. Given below is an example of the same. Example Projectpom.xml:Â XML <project xmlns="http://maven.apache

2 min read

How to Create a Project using Spring and Struts 2?

Prerequisites: Introduction to Spring FrameworkIntroduction and Working of Struts Web Framework In this article, we will discuss how the Spring framework can be integrated with the Struts2 framework to build a robust Java web application. Here I am going to assume that you know about Spring and Stru

6 min read

Spring - Perform Update Operation in CRUD

CRUD (Create, Read, Update, Delete) operations are the building block for developers stepping into the software industry. CRUD is mostly simple and straight forward except that real-time scenarios tend to get complex. Among CRUD operations, the update operation requires more effort to get right comp

13 min read

How to Transfer Data in Spring using DTO?

In Spring Framework, Data Transfer Object (DTO) is an object that carries data between processes. When you're working with a remote interface, each call is expensive. As a result, you need to reduce the number of calls. The solution is to create a Data Transfer Object that can hold all the data for

7 min read

Spring - Resource Bundle Message Source (i18n)

A software is a multi purpose usage one. Â By using Message Source, it can be applicable to all languages. That concept is called i18n, that is according to the user locality, dynamic web pages are rendered in the user screen. We need to keep all the constants in a separate properties file which matc

5 min read

Spring Application Without Any .xml Configuration

Spring MVC Application Without the web.xml File, we have eliminated the web.xml file, but we have left with the spring config XML file that is this file "application-config.xml". So here, we are going to see how to eliminate the spring config XML file and build a spring application without any .xml

4 min read

Spring - BeanPostProcessor

Spring Framework provides BeanPostProcessor Interface. It allows custom modification of new bean instances that are created by the Spring Bean Factory. If we want to implement some custom logic such as checking for marker interfaces or wrapping beans with proxies after the Spring container finishes

5 min read

Spring and JAXB Integration

The term JAXB stands for Java Architecture for XML Binding. Java programmers may use it to translate Java classes to XML representations. Java objects may be marshaled into XML and vice versa using JAXB. Sun provides an OXM (Object XML Mapping) or O/M framework. Note: The biggest and only advantage

5 min read

Spring - Difference Between Dependency Injection and Factory Pattern

Dependency Injection and Factory Pattern are almost similar in the sense that they both follow the interface-driven programming approach and create the instance of classes. A. Factory Pattern In Factory Pattern, the client class is still responsible for getting the instance of products by class getI

4 min read

Spring - REST Pagination

Spring Framework is built on top of servlets. This particular web framework comes with very essential features with which we can develop efficient and effective web applications. On top of Spring Framework, Spring Boot was released in April 2014. The main aim behind the Spring Boot was the feature o

6 min read

Spring - Remoting By Burlap

Coucho can provide both Hessian and Burlap. Burlap is an xml-based Hessian substitute. We may use the BurlapServiceExporter and BurlapProxyFactoryBean classes to implement burlap's remoting service. Implementation: You need to create the following files for creating a simple burlap application: Calc

2 min read

Spring - Remoting By Hessian

We may use the HessianServiceExporter and HessianProxyFactoryBean classes to implement the hessian remoting service. The major advantage of Hessian's is that Hessian works well on both sides of a firewall. Hessian is a portable language that may be used with other languages like PHP and.Net. Impleme

2 min read

Spring with Castor Example

With the use of CastorMarshaller class, we can achieve marshal a java object into XML code and vice-versa of it with the help of using castor. The castor is the implemented class for Marshaller and Unmarshaller interfaces within it, thus it does not require other further configurations by its defaul

3 min read

Spring - REST XML Response

REST APIs have become increasingly popular due to their simplicity and flexibility in architecting applications. A REST API, which stands for Representational State Transfer, is often referred to as RESTful web services. Unlike traditional MVC controllers that return views, REST controllers return d

8 min read

Spring - Inheriting Bean

In Spring, bean inheritance allows for reusing configuration from a parent bean and customizing it in child beans. This feature helps in reducing redundancy and managing configurations more efficiently. Unlike Java class inheritance, Spring bean inheritance is more about configuration inheritance ra

4 min read

Spring - Change DispatcherServlet Context Configuration File Name

DispatcherServlet acts as the Front Controller for Spring-based web applications. So now what is Front Controller? So it is pretty simple. Any request is going to come into our website the front controller is going to stand in front and is going to accept all the requests and once the front controll

6 min read

Spring - JMS Integration

JMS is a standard Java API that allows a Java application to send messages to another application. It is highly scalable and allows us to loosely couple applications using asynchronous messaging. Using JMS we can read, send, and read messages. Benefits of using JMS with Spring IntegrationLoad balanc

8 min read

Spring - Difference Between RowMapper and ResultSetExtractor

Understanding the difference between RowMapper and ResultSetExtractor is very important for anyone working with JDBC in Java. Both play important roles in fetching and processing data from the database. The main difference between RowMapper and ResultSetExtractor lies in their responsibilities. RowM

3 min read

Spring with Xstream

Xstream is a simple Java-based serialization/deserialization library to convert Java Objects into their XML representation. It can also be used to convert an XML string to an equivalent Java Object. It is a fast, and efficient extension to the Java standard library. It's also highly customizable. Fo

3 min read

Spring - RowMapper Interface with Example

Spring is one of the most popular Java EE frameworks. It is an open-source lightweight framework that allows Java EE 7 developers to build simple, reliable, and scalable enterprise applications. This framework mainly focuses on providing various ways to help you manage your business objects. It made

6 min read

Spring - util:constant

Spring 2.0 version introduced XML Schema-based configuration. It makes Spring XML configuration files substantially clearer to read and in addition to that, it allows the developer to express the intent of a bean definition. These new custom tags work best for infrastructure or integration beans: fo

4 min read

Spring - Static Factory Method

Static factory methods are those that can return the same object type that implements them. Static factory methods are more flexible with the return types as they can also return subtypes and primitives too. Static factory methods are used to encapsulate the object creation process. In the Spring fr

4 min read

Spring - FactoryBean

Spring is one of the most popular Java EE frameworks. It is an open-source lightweight framework that allows Java EE 7 developers to build simple, reliable, and scalable enterprise applications. This framework mainly focuses on providing various ways to help you manage your business objects. It made

5 min read

Difference between EJB and Spring

EJB and Spring both are used to develop enterprise applications. But there are few differences exists between them. So, in this article we have tried to cover all these differences. 1. Enterprise Java Beans (EJB) : EJB stand for Enterprise Java Beans. It is a server side software component that summ

3 min read

Spring Framework Annotations

Spring framework is one of the most popular Java EE frameworks. It is an open-source lightweight framework that allows Java EE 7 developers to build simple, reliable, and scalable enterprise applications. Spring framework mainly focuses on providing various ways to help you manage your business obje

6 min read

Spring Core Annotations

Spring Annotations are a form of metadata that provides data about a program. Annotations are used to provide supplemental information about a program. It does not have a direct effect on the operation of the code they annotate. It does not change the action of the compiled program.Spring Framework

5 min read

Spring - Stereotype Annotations

Spring is one of the most popular Java EE frameworks. It is an open-source lightweight framework that allows Java EE 7 developers to build simple, reliable, and scalable enterprise applications. This framework mainly focuses on providing various ways to help you manage your business objects. Spring

10 min read

Spring @Bean Annotation with Example

The @Bean annotation in Spring is a powerful way to define and manage beans in a Spring application. Unlike @Component, which relies on class-level scanning, @Bean explicitly declares beans inside @Configuration classes, offering greater flexibility in object creation. In this article, we will explo

9 min read

Spring Boot @Controller Annotation with Example

Spring is one of the most popular frameworks for building enterprise-level Java applications. It is an open-source, lightweight framework that simplifies the development of robust, scalable, and maintainable applications. Spring provides various features such as Dependency Injection (DI), Aspect-Ori

3 min read

Spring @Value Annotation with Example

The @Value annotation in Spring is one of the most important annotations. It is used to assign default values to variables and method arguments. It allows us to inject values from spring environment variables, system variables, and properties files. It also supports Spring Expression Language (SpEL)

6 min read

Spring @Configuration Annotation with Example

The @Configuration annotation in Spring is one of the most important annotations. It indicates that a class contains @Bean definition methods, which the Spring container can process to generate Spring Beans for use in the application. This annotation is part of the Spring Core framework. Let's under

4 min read

Spring @ComponentScan Annotation with Example

Spring is one of the most popular frameworks for building enterprise-level Java applications. It is an open-source, lightweight framework that simplifies the development of robust, scalable, and maintainable applications. Spring provides various features such as Dependency Injection (DI), Aspect-Ori

3 min read

Spring @Qualifier Annotation with Example

Spring is one of the most popular Java EE frameworks. It is an open-source lightweight framework that allows Java EE 7 developers to build simple, reliable, and scalable enterprise applications. Spring focuses on providing various ways to manage business objects, making web application development e

6 min read

Spring Boot @Service Annotation with Example

Spring is one of the most popular frameworks for building enterprise-level Java applications. It is an open-source, lightweight framework that simplifies the development of robust, scalable, and maintainable applications. Spring provides various features such as Dependency Injection (DI), Aspect-Ori

3 min read

Spring Boot @Repository Annotation with Example

Spring is one of the most popular frameworks for building enterprise-level Java applications. It is an open-source, lightweight framework that simplifies the development of robust, scalable, and maintainable applications. Spring provides various features such as Dependency Injection (DI), Aspect-Ori

5 min read

Spring - Required Annotation

Consider a scenario where a developer wants to make some of the fields as mandatory fields. using the Spring framework, a developer can use the @Required annotation to those fields by pushing the responsibility for such checking onto the container. So container must check whether those fields are be

7 min read

Spring @Component Annotation with Example

Spring is one of the most popular frameworks for building enterprise applications in Java. It is an open-source, lightweight framework that allows developers to build simple, reliable, and scalable applications. Spring focuses on providing various ways to manage business objects efficiently. It simp

3 min read

Spring @Autowired Annotation

The @Autowired annotation in Spring marks a constructor, setter method, property, or configuration method to be autowired. This means that Spring will automatically inject the required dependencies (beans) at runtime using its Dependency Injection mechanism. The image below illustrates this concept:

3 min read

Spring - @PostConstruct and @PreDestroy Annotation with Example

Spring is one of the most popular Java EE frameworks. It is an open-source lightweight framework that allows Java EE 7 developers to build simple, reliable, and scalable enterprise applications. This framework mainly focuses on providing various ways to help you manage your business objects. It made

13 min read

Java Spring - Using @PropertySource Annotation and Resource Interface

In Java applications, Sometimes we might need to use data from external resources such as text files, XML files, properties files, image files, etc., from different locations (e.g., a file system, classpath, or URL).Â @PropertySource Annotation To achieve this, the Spring framework provides the @Pro

6 min read

Java Spring - Using @Scope Annotation to Set a POJO's Scope

In the Spring Framework, when we declare a POJO (Plain Old Java Object) instance, what we are essentially creating is a template for a bean definition. This means that, just like a class, we can have multiple object instances created from a single template. These beans are managed by the Spring IoC

7 min read

Spring @Required Annotation with Example

Spring Annotations provide a powerful way to configure dependencies and implement dependency injection in Java applications. These annotations act as metadata, offering additional information about the program. The @Required annotation in Spring is a method-level annotation used in the setter method

5 min read

Spring - IoC Container

Spring Container

Key feature of Spring Framework