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Why use IoC container?
IoC Container (a.k.a. DI Container) is a framework for implementing automatic dependency injection. The IoC container creates an object of the specified class and also injects all the dependency objects through a constructor, a property or a method at run time and disposes it at the appropriate time.
What is IoC container Spring?
An IoC container is a common characteristic of frameworks that implement IoC. In the Spring framework, the interface ApplicationContext represents the IoC container. The Spring container is responsible for instantiating, configuring and assembling objects known as beans, as well as managing their life cycles.
How dependency injection container works?
At its core a DI Container creates objects based on mappings between interfaces and concrete types. This will allow you to request an abstract type from the container: IFoo f = container.
Which interface represent the Spring IoC container?
springframework.context.ApplicationContext
The interface org. springframework. context. ApplicationContext represents the Spring IoC container and is responsible for instantiating, configuring, and assembling the aforementioned beans.
What is difference between IoC and Di?
IoC – Inversion of control is generic term, independent of language, it is actually not create the objects but describe in which fashion object is being created. DI – Dependency Injection is concrete term, in which we provide dependencies of the object at run time by using different injection techniques viz.
What are different ways to achieve Spring IoC?
Spring Framework provides three ways to configure beans to be used in the application. Annotation Based Configuration – By using @Service or @Component annotations. Scope details can be provided with @Scope annotation. XML Based Configuration – By creating Spring Configuration XML file to configure the beans.
How many IoC containers are there in Spring?
There are basically two types of IOC Containers in Spring: BeanFactory: BeanFactory is like a factory class that contains a collection of beans. It instantiates the bean whenever asked for by clients. ApplicationContext: The ApplicationContext interface is built on top of the BeanFactory interface.