How do you set an annotation scope in Spring?

How do you set an annotation scope in Spring?

In Spring, scope can be defined using spring bean @Scope annotation. Let’s quickly list down all six inbuilt bean scopes available to use in spring application context. These same scope apply to spring boot bean scope as well. Opposite to singleton, it produces a new instance each and every time a bean is requested.

What is use of @scope annotation?

A scope annotation applies to a class containing an injectable constructor and governs how the injector reuses instances of the type. By default, if no scope annotation is present, the injector creates an instance (by injecting the type’s constructor), uses the instance for one injection, and then forgets it.

What is the scope of @component in Spring?

The singleton scope is the default scope in Spring. singleton (Default) Scopes a single bean definition to a single object instance per Spring IoC container.

What is @scope annotation in Spring?

We use @Scope to define the scope of a @Component class or a @Bean definition. It can be either singleton, prototype, request, session, globalSession or some custom scope. In this article, we will discuss a prototype scope with an example.

Why singleton is default scope in Spring?

Singleton is the default scope for a Bean, the one that will be used if nothing else is indicated. This scope implies that Spring container will create an only shared instance of the class designated by this bean, so each time the Bean is required the same object will be injected.

What is difference between @bean and @component?

No. It is used to explicitly declare a single bean, rather than letting Spring do it automatically. If any class is annotated with @Component it will be automatically detect by using classpath scan. We should use @bean, if you want specific implementation based on dynamic condition.

What is difference between @bean and Autowired?

@Bean is just for the metadata definition to create the bean(equivalent to tag). @Autowired is to inject the dependancy into a bean(equivalent to ref XML tag/attribute).