Software development is a vast field, and it requires several tasks to be done before the final look of the software is released. As the field of software engineering has excelled a lot in the present era, it is safe to say that software development for different clients has become a lot easier than it used to be. The clients now look forward to objects, codes, and already listed programs to add to the software and make it usable. This is not only easy but also saves the client from the trouble of organizing and developing things from scratch. Many of the leading branding agencies in the UAE are looking forward to the use of this technique.
What is dependency injection, and how is it used?
Dependency injection is a technique, and it is best explained via the use of a few specific terms. Any object or a useful service is known as a dependency, and it is offered to the clients who are in search of such a product. The injection here plays the role of a carrier. It is the process of carrying the dependency (service) to the dependent object (client) on its use.
In order to use the service, it is ensured that the client receives the service as it is, and he doesn’t have to build or search for it from the start. While using it, the dependency injection technique makes sure that the container works and the framework deals with the hurdles of service instantiation, sequencing process, and initialization. The service references are supplied as it is to the clients as well.
Benefits of using dependency injection
When a new technique is viral in the industry, it is without a doubt that it brings loads of benefits to the user. While using the dependency technique, the client is spared from building the component or the service from the beginning. It, in return, also increases the testability, reusability, readability, and maintainability of the software component under discussion.
The different types of DI bring different benefits. The most common types of dependency injection include the following:
- Constructor injection
- Setter injection
- Interface injection
Why should I use dependency injection?
Dependency injection is used to promote testability and easy maintenance.
Pros
- Testability
- Flexibility
- Easy maintenance
- Decouples classes
Con’s
- Creating instances of your classes can become complicated, especially when your classes have too many dependencies and they grow to have too many responsibilities.
Common frameworks of the DI technique
To make more use of the dependency injection technique, the developers have launched several DI frameworks that make things easier. They are as follows:
- Spring framework
- HiveMind
- PicoContainer
- XWork
The frameworks that involve this technique can either be large or small. The first one mentioned in the list above is a large framework and offers other services as well. If you are looking for container frameworks, go for the PicoContainer and HiveMind frameworks. XWork is an independent framework and is a command pattern framework. It is often used with the Webwork program.
The dependency injection technique has become an indispensable part of the software development field in the present era. It offers high functionality and aids in managing, configuring, and looking after the different services.
