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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What keyword is used to create an object in Java?
💡 Hint: Think of what you use to call a constructor.
Question 2
Easy
What happens when an object is no longer referenced?
💡 Hint: Consider what happens to trash when it isn't picked up.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does the new keyword do in Java?
- Creates a new class
- Allocates memory for an object
- Initializes a variable
💡 Hint: Remember what new does when you want to create something.
Question 2
True or False: The garbage collector in Java will free memory for any object immediately when it goes out of scope.
- True
- False
💡 Hint: Consider how trash isn't taken out the moment you throw it away.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Write a Java program that creates multiple objects of a class, removes references to some of them, and discusses the expected garbage collection behavior.
💡 Hint: Think about how you would clear your desktop of old files.
Question 2
Analyze memory management in Java without garbage collection. What major issues could arise?
💡 Hint: Picture how an overflowing bin hampers accessibility.
Challenge and get performance evaluation