8.5.2 - Lifetime of Instance Variables
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Practice Questions
Test your understanding with targeted questions
What is an instance variable?
💡 Hint: Think about what happens when you create multiple objects from the same class.
What does the garbage collector do?
💡 Hint: Consider how it helps manage memory automatically in Java.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What happens to instance variables when the object they belong to is destroyed?
💡 Hint: Remember that instance variables are linked to their respective objects.
True or False: Instance variables are shared between all instances of a class.
💡 Hint: Think about how class instances operate independently.
1 more question available
Challenge Problems
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Design a class 'Book' with instance variables for title and author. Create multiple instances and demonstrate how to manage their lifetimes effectively.
💡 Hint: Think about where you might store and subsequently discard references.
Explain how the garbage collector works, providing examples of how it could affect program memory during execution.
💡 Hint: Consider how recycling of memory aids in performance.
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