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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

Provider

By default, whenever an application requires an instance of an object, Guice instantiates and returns it; but, in some cases, if the object creation process needs customization, then Guice providers do that. A provider interface takes after the conventional factory design in making objects.  For instance, consider our ApplicationModule class binding process:

binder.bind(NotificationService.class).to(new SMSProvider());

By writing above line of code, SMSProvider class gives factory methods that will return objects of type NotificationService. Let's say we want to customize the object-making and maintenance process for the ServiceConnection class, which is shown as follows:

public class ServiceConnection { public void startService(){ ...
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Publisher Resources

ISBN: 9781788296250Supplemental Content