Practice Creational Design Patterns (11.3) - Design Patterns in Java

Practise this section

9 questions

Flashcard drill
5 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What does the Singleton Pattern ensure?
Show hintHide hint
Think about situations where a single instance is important.
Question 2.
Describe the main purpose of the Factory Method Pattern.
Show hintHide hint
Consider flexibility in object creation.
3Question 3.
What is the main goal of the Singleton Pattern?
- To allow multiple instances
- To restrict instantiation to one
- To create families of objects
Show hintHide hint
What does 'singleton' suggest to you?
4Question 4.
True or False: The Factory Method Pattern allows subclasses to modify the types of objects created.
- True
- False
Show hintHide hint
Think about flexibility in object creation.
Question 5.
Design a logger using the Singleton Pattern. Explain how you would ensure thread safety.
Show hintHide hint
Consider synchronization methods provided in Java.
Question 6.
Analyze the pros and cons of using the Abstract Factory Pattern over direct instantiation in Java.
Show hintHide hint
Think about when it might become hard to manage many class families.

5 more questions in this section. Enroll free to practise them all.