Dependency Injection 2

What is Dependency Injection

• Produce a loosely coupled code
• Any change in the class without affecting other object.
• Type of DI
• Constructor Injection
• parameter to inject dependencies in a class
• One parameterized constructor but no default constructor and you need to pass specified values to the constructor
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• Setter Injection
• through properties of a class
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• Interface-based injection
• through method
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• Advantage
• Maintainability
• maintain code structure, single principle
• Flexibility
• loosely coupled code, flexible to use different ways.
• Testability
• easy to do unit testing
• Readability
• Logic in constructor.