Practice Best Practices With Objects (5.14) - Chapter 5: Objects - ICSE Class 12 Computer Science

Practice: Best Practices with Objects

Lesson 5.14Objects

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9 questions

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

Question 1.
What is the purpose of a constructor in Java?
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Think of the constructor as a setup tool for an object.
Question 2.
Why should we use access modifiers?
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Access modifiers help in protecting data.
3Question 3.
What is the primary purpose of a constructor in Java?
- To destroy objects
- To initialize objects
- To modify objects
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Think about when the constructor is called.
4Question 4.
True or False: Encapsulation allows direct access to class attributes through public access.
- True
- False
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Remember how encapsulation is used to protect data.
Question 5.
Create a Java class named 'Book' with attributes for title and author. Include a constructor for initialization and implement getter and setter methods. Additionally, demonstrate how garbage collection works by creating and nullifying a 'Book' object.
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Remember to nullify the object to allow garbage collection.
Question 6.
Discuss the benefits of encapsulation with examples, especially focusing on security and maintainability. Create a simple class 'User' with private fields and expose them via getters and setters.
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How does encapsulation prevent direct access to sensitive information?

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