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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

Spring DI with the factory method

So far, we have seen that the Spring container takes care of creating the instances of bean. In some scenarios, you need to take control of creating an instance of bean with custom code. Spring supports this feature with the help of the factory method.

You can write your custom logic to create the instance in the factory method, and just instruct Spring to use it. When Spring encounters such instructions, it will call the factory method to create the instance. So, the factory method is kind of a callback function. 

There are two flavors of the factory method: static, and instance (non-static).

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Publisher Resources

ISBN: 9781788296250Supplemental Content