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Dependency inversion refers to a specific form of decoupling software modules. The principle is that high level modules and low level modules should depend on abstractions, and abstractions shall not depend on implementation details. Not to be confused with dependency injection which is a special form of dependency inversion.

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Is dependency inversion principle necessary?

I've read a lot about dependency inversion principle but still, I can't apply it to my case. I just don't know when I should apply it and when not. I write a simple application in Java to generate inv …