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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the scope of a variable declared within a method?
💡 Hint: Think about where the variable can be accessed.
Question 2
Easy
What is the difference between an instance variable and a class variable?
💡 Hint: Consider their declaration location in a class.
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 type of scope does a variable have if it is declared inside a method?
- Local
- Instance
- Class
💡 Hint: Think about how accessibility differs in methods.
Question 2
True or False: An instance variable can only be accessed by the class in which it is declared.
- True
- False
💡 Hint: Consider the accessibility across methods.
Solve 3 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a class named Vehicle with an instance variable for the model and a class variable for the number of wheels. Write methods to set and display these appropriately.
💡 Hint: Consider how you would create instances of this vehicle and access both variables.
Question 2
Explain the implications of variable scope on memory management. How do local, instance, and class variables differ in terms of memory allocation?
💡 Hint: Think about when each variable type is created and destroyed.
Challenge and get performance evaluation