Practice Dependency Injection (DI) - 30.5.2 | 30. Introduction to Frameworks (e.g., Spring Basics) | Advanced Programming
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30.5.2 - Dependency Injection (DI)

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does Dependency Injection do?

💡 Hint: Think about how it contrasts with a class creating its own dependencies.

Question 2

Easy

Which annotation is typically used in Field Injection?

💡 Hint: This annotation helps the framework know which dependencies to inject.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the main advantage of Dependency Injection?

  • A. Increased coupling
  • B. Improved modularity
  • C. Reduced testability

💡 Hint: Think of how you might change a part of the code without affecting others.

Question 2

True or False: Field Injection requires explicit constructors.

  • True
  • False

💡 Hint: Consider whether constructors are needed when dependencies are injected directly.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Create a simple class structure using Dependency Injection. Define a class Car that has a dependency on Engine. Illustrate with both Constructor and Setter Injection, and explain when each approach is preferable.

💡 Hint: Use a constructor for things that must exist and setters for those that can wait.

Question 2

Discuss how Dependency Injection can lead to better unit testing practices. Provide an example scenario where DI improves the testability of a class.

💡 Hint: Think about how you would isolate a class from its dependencies while testing.

Challenge and get performance evaluation