Learn how the DI can be used to decouple the dependencies between different components.

Spring IoC

In Spring, the Inversion of Control (IoC) principle is implemented using the Dependency Injection (DI) design pattern. Let's understand dependency injection with the help of an example. First we will see a java version of the example and later we will add spring functionalities to it. As far as the example go, its pretty simple. The QuizMater interface exposes the popQuestion() method. To keep things simple, our QuizMaster will generate only one question.