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What is the benefit of using Interface Injection?

Hong Anderson
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Joined: Jul 05, 2005
Posts: 1936
I don't quite understand what is the benefit of using Interface Injection. It looks similar to Setter Injection but requires implementing an interface.
In which circumstance that we should use Interface Injection rather than Setter Injection?


SCJA 1.0, SCJP 1.4, SCWCD 1.4, SCBCD 1.3, SCJP 5.0, SCEA 5, SCBCD 5; OCUP - Fundamental, Intermediate and Advanced; IBM Certified Solution Designer - OOAD, vUML 2; SpringSource Certified Spring Professional
Jeanne Boyarsky
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Joined: May 26, 2003
Posts: 29287
    
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It's helpful when you want to inject mock objects for testing.


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