Practice Key Takeaways (11.8) - Design Patterns in Java

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9 questions

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3 cards from this section. Quick, good the night before a test.
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6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is a design pattern?
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Think about templates in coding.
Question 2.
Name one category of design patterns.
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Classify them based on function.
3Question 3.
What does the Singleton pattern ensure?
- Multiple instances of a class
- Only one instance of a class
- No instance of a class
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Think about a unique entity.
4Question 4.
True or False: The Factory Method pattern requires you to specify the exact class of object you want to create.
- True
- False
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Consider flexibility in choice.
Question 5.
Design a simple Java application using the Observer pattern to notify users of a temperature change. Explain your reasoning.
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Consider real-world scenarios like weather apps.
Question 6.
Explain how the Factory Method pattern could improve a simple application that creates vehicles. What advantages would it offer?
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Think about ease of adding features.

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