Spring provides a great deal of flexibility in defining beans and managing the life cycle of a bean. There are a few other important Spring annotations that we will discuss in the table, as follows:
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Annotations |
Use |
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@ScopedProxy |
Sometimes, we will need to inject a request or a session-scoped bean into a singleton-scoped bean. In such situations, the @ScopedProxy annotation provides a smart proxy to be injected into singleton-scoped beans. |
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@Component, @Service, @Controller, @Repository |
@Component is the most generic way of defining a Spring bean. Other annotations have more specific contexts associated with them.
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@PostConstruct |
On any spring bean, a post construct method can be provided using the @PostConstruct annotation. This method is called once the bean is fully initialized with dependencies. This will be invoked only once during a bean lifecycle. |
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@PreDestroy |
On any spring bean, a predestroy method can be provided using the @PreDestroy annotation. This method is called just before a bean is removed from the container. This can be used to release any resources that are held by the bean. |