How Control Bean Life Cycle In Spring?

How do you kill spring beans?

To do this initialization and destroy routine you can use the init-method and destroy-method attribute when declaring a bean in spring configuration using the element.

By defining the init-method and destroy-method it will allow the Spring Container to call the initialization method right after the bean created..

How does IoC work in spring?

An IoC container is a common characteristic of frameworks that implement IoC. In the Spring framework, the IoC container is represented by the interface ApplicationContext. The Spring container is responsible for instantiating, configuring and assembling objects known as beans, as well as managing their lifecycle.

What is bean in spring?

In Spring, the objects that form the backbone of your application and that are managed by the Spring IoC container are called beans. A bean is an object that is instantiated, assembled, and otherwise managed by a Spring IoC container. Otherwise, a bean is simply one of many objects in your application.

How do you destroy prototype beans in spring?

It is therefore usually not necessary to explicitly destroy a prototype bean. However, in the case where a memory leak may occur as described above, prototype beans can be destroyed by creating a singleton bean post-processor whose destruction method explicitly calls the destruction hooks of your prototype beans.

What is Init method in spring?

In Spring, you can use init-method and destroy-method as attribute in bean configuration file for bean to perform certain actions upon initialization and destruction. Alternative to InitializingBean and DisposableBean interface.

How do you initialize a bean in spring?

The order of bean initialization is same as it’s defined in the spring bean configuration file. The context is returned only when all the spring beans are initialized properly with post-init method executions. Employee name is printed as “Pankaj” because it was initialized in the post-init method.

Does spring bean provide thread safety?

Singleton spring beans has no relation with thread safety. spring container only manages life-cycle of objects and guaranteed that only one object in spring container. so If an Non thread safe object is injected then obviously it is not thread safe. To make it thread safe you have to handle it by coding.

How do I remove a spring context from a bean?

You can try removing the bean definition. Get the BeanDefinitionRegistry and call removeDefinition(..) It depends on the way you create your application, but for example in web application you can get the definition registry by: BeanDefinitionRegistry factory = (BeanDefinitionRegistry) applicationCtx.

What is difference between IoC and DI in spring?

Inversion of control means the program delegates control to someone else who will drive the flow IOC (Inversion of control) is a general parent term while DI (Dependency injection) is a subset of IOC. … DI provides objects that an object needs. So rather than the dependencies construct themselves they are injected.

How many types of IoC containers are there in spring?

two typesThere are two types of IoC containers. They are: BeanFactory. ApplicationContext.

How many ways can you configure bean in spring?

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.

What is the life cycle of bean in spring?

The life cycle of a Spring bean is easy to understand. When a bean is instantiated, it may be required to perform some initialization to get it into a usable state. Similarly, when the bean is no longer required and is removed from the container, some cleanup may be required.