Practice Singleton Pattern (11.3.1) - Design Patterns in Java

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8 questions

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6 sample questions

Question 1.
What is the purpose of the Singleton Pattern?
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Think about managing resources.
Question 2.
What is the typical method name used to get the Singleton instance?
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It should be self-descriptive.
3Question 3.
What is the main purpose of the Singleton Pattern?
- To allow multiple instances of a class
- To ensure only one instance of a class exists
- To create many instances conditionally
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Focus on the definition of Singleton.
4Question 4.
True or False: A Singleton can have more than one instance.
- True
- False
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Recall the concept of single instance.
Question 5.
Design a Singleton class in Java that ensures thread safety without using synchronized methods. Explain your approach.
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Consider both the instance variable and synchronization.
Question 6.
Critically assess and provide a solution for testing a Singleton class implementation.
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Think about mocking and isolation for tests.

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