Dependency injection is a design pattern used to implement Inversion of Control (IoC). Explain Dependency Injection...

Dependency injection is a design pattern used to implement Inversion of Control (IoC). Explain Dependency Injection as a fundamental aspect of spring framework. Discuss different ways to implemented DI in J2EE.

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Dependency Injection(DI) can be the fundamental aspect of the Spring framework as:

DI allows the the container in the Spring to put different objects into another object or objects. This also goes with dependencies in the Spring framework. Different objects can be put or injected into other dependencies. By virtue of this, the components in the Spring framework are loosely coupled and the container becomes responsible for managing all the components.

Ways DI can be implemented in J2EE are as follows:

Making the container to invoke the constructor by passing a number of arguments. In this way DI can be implemented based on the constructor.
Making the container to call the setter method but only after the container has invoked the constructor having no arguments which will instantiate a bean which will be called by the setter method.

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venereology answered 2 years ago

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