Which is better BeanFactory or ApplicationContext?

Which is better BeanFactory or ApplicationContext?

The ApplicationContext comes with advanced features, including several that are geared towards enterprise applications, while the BeanFactory comes with only basic features. Therefore, it’s generally recommended to use the ApplicationContext, and we should use BeanFactory only when memory consumption is critical.

What is BeanFactory?

The BeanFactory is the actual container which instantiates, configures, and manages a number of beans. These beans typically collaborate with one another, and thus have dependencies between themselves.

Is BeanFactory lazy loading?

The BeanFactory by default lazy loads the beans, it creates the bean only when the getBean() method is called. whereas ApplicationContext preloads all the singleton beans upon start-up.

Does ApplicationContext implements BeanFactory?

The ApplicationContext is the central interface within a Spring application that is used for providing configuration information to the application. It implements the BeanFactory interface. Hence, the ApplicationContext includes all functionality of the BeanFactory and much more!

What is the difference between @bean and @component?

@Component is a class level annotation whereas @Bean is a method level annotation and name of the method serves as the bean name. @Component need not to be used with the @Configuration annotation where as @Bean annotation has to be used within the class which is annotated with @Configuration.

How do you make a BeanFactory?

Example for using Spring BeanFactory :

1. Step 1 : Create pom.xml. pom.xml.
2. Step 2 : Create Employee class : Employee.java. Employee.java.
3. Step 3 : Create spring configuration file : Spring-Bean.xml.
4. Step 4 : Create a main class to access the Spring core context. Client.java.

What are different types of Autowire?

Autowiring Modes

No.	Mode
2)	byName
3)	byType
4)	constructor
5)	autodetect

Which is an implementation of the BeanFactory interface?

The most commonly used BeanFactory implementation is the XmlBeanFactory class.

Is ApplicationContext container lazy loading?

By default, Spring “application context” eagerly creates and initializes all ‘singleton scoped’ beans during application startup itself. It helps in detecting the bean configuration issues at early stage, in most of the cases.

What is the difference between @component and ComponentScan?

@Component and @ComponentScan are for different purposes. @Component indicates that a class might be a candidate for creating a bean. It’s like putting a hand up. @ComponentScan is searching packages for Components.

What is @component annotation in Spring boot?

@Component is an annotation that allows Spring to automatically detect our custom beans. In other words, without having to write any explicit code, Spring will: Scan our application for classes annotated with @Component. Instantiate them and inject any specified dependencies into them. Inject them wherever needed.

What is the difference between beanfactory and applicationcontext in Spring Boot?

One is BeanFactory and the other is Application Context. The application context interface extends BeanFactory to enhance the functionality of BeanFactory. In new Spring versions, BeanFactory is replaced with ApplicationContext. But still, BeanFactory exists for backward compatibility.

What is the difference between applicationcontext and beanfactory dependency injection?

With BeanFactory annotation based dependency injection is not supported but annotation based dependency injection is supported in ApplicationContext. For the most part, ApplicationContext is preferred unless you need to save resources, like on a mobile application.

What is the use of applicationcontext?

Hence, the ApplicationContext includes all functionality of the BeanFactory and much more! Its main function is to support the creation of big business applications. It uses eager loading, so every bean instantiate after the ApplicationContext is started up. Here is an example of the ApplicationContext usage:

Should I use xmlwebapplicationcontext or beanfactoryaware?

If your developing a web app, it’s safe to say you’ll need to use XmlWebApplicationContext. If you want your beans to be aware of Spring, you can have them implement BeanFactoryAware and/or ApplicationContextAware for that, so you can use either BeanFactory or ApplicationContext and choose which interface to implement.