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Java 9 Dependency Injection
book

Java 9 Dependency Injection

by Nilang Patel, Krunal Patel
April 2018
Intermediate to advanced content levelIntermediate to advanced
246 pages
6h 11m
English
Packt Publishing
Content preview from Java 9 Dependency Injection

Singleton scope

Each bean created by a Spring container has a default Singleton scope; Spring treats it as one instance of the bean, and it is served for each request for that bean from the cache inside the container. In dependency injection, a bean defined as a singleton is injected as a shared bean from the cache. 

A Singleton bean scope is restricted to the Spring container, compared to this Singleton pattern in Java, where only one instance of a specific class will ever be created per ClassLoader. This scope is useful in web applications as well as standalone applications, and stateless beans can also utilize a Singleton scope.

On the off chance that three beans have distinctive IDs but the same class with a Singleton scope, at that point, ...

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Publisher Resources

ISBN: 9781788296250Supplemental Content