19.5 - Implementing DI with Java Without Frameworks
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Practice Questions
Test your understanding with targeted questions
What is Dependency Injection?
💡 Hint: Think about how classes manage their required objects.
What is Constructor Injection?
💡 Hint: Focus on how dependencies are passed when creating an object.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary benefit of Dependency Injection?
💡 Hint: Think about how DI changes class relationships.
Using Constructor Injection allows for easier testing.
💡 Hint: Consider the testing advantage of decoupled classes.
1 more question available
Challenge Problems
Push your limits with advanced challenges
How would you refactor existing tightly coupled code to use manual Dependency Injection? Provide both before and after examples.
💡 Hint: Look for instances where classes instantiate their dependencies.
Design a small Java application that uses manual DI for a scenario like a library management system. Include a Book, a Library, and a Borrower.
💡 Hint: Focus on how each class can receive its dependencies through constructors.
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